Is the axillary part of the axial body region?
The axillary lymph nodes are a collection of grouped lymph nodes found in the axillary region of the upper limb. The axillary region is commonly referred to as the ‘armpit’, although it is a three-dimensional space bound inferiorly by skin and anteriorly by the clavicle.
What is mid axillary?
mid· ax· il· lary line | ˈmid-ˈak-sə-ˌler-ē- Medical Definition of midaxillary line : an imaginary line through the axilla parallel to the long axis of the body and midway between its ventral and dorsal surfaces Learn More About midaxillary line Share midaxillary line Dictionary Entries Near midaxillary line MID midaxillary line midazolam
What does axillary artery mean?
The axillary artery is a large muscular vessel that travels through the axilla. It is responsible for carrying oxygen-rich blood to the upper limb, as well as to parts of the musculocutaneous system of the scapula and upper lateral thorax .
What is the axillary border?
The axilla (also, armpit, underarm or oxter) is the area on the human body directly under the joint where the arm connects to the shoulder. It also contains many sweat glands. What are the borders of the axilla? There are five anatomic borders of the axilla: the superior, anterior, posterior, lateral, and medial walls[1].
Is the armpit in the axillary region?
The floor, or base, of the axilla is the axillary fascia and its skin on the surface of the axilla, aka the 'armpit'. The axilla is filled with adipose (fat) and allows passage for: vessels, nerve plexus, lymphatics, and muscles. The muscles include the coracobrachialis, pectoralis minor, and the biceps brachii.
What does axillary mean in anatomy?
armpit areaListen to pronunciation. (AK-sih-LAYR-ee) Pertaining to the armpit area, including the lymph nodes that are located there.
What is area under armpit called?
The armpit is also called the axilla. Blood and lymph vessels serving the arm travel through the armpit. There are more than 20 lymph nodes (small lumps of tissue that are part of the body's lymphatic system, which helps fight infection) in the armpit. These lymph nodes normally cannot be felt through the skin.
What is the axillary region to the pectoral region?
axillary region the area of the upper chest surrounding the axilla, lateral to the pectoral region. epigastric region the abdominal region that is superior and central in location, above the umbilical region and between the two hypochondriac regions.
What is axillary lymph nodes?
Lymphatic system and axillary nodes Lymph nodes are small clumps of immune cells that act as filters for the lymphatic system. They also store white blood cells that help fight illness. The lymph nodes in the underarm are called axillary lymph nodes. If breast cancer spreads, this is the first place it's likely to go.
What causes enlarged axillary lymph nodes?
Systematic, non-cancerous causes of enlarged axillary lymph nodes include: Viral infections: mononucleosis, chicken pox, measles, HIV/AIDS and others. Bacterial: tuberculosis, etc. Fungal.
What's another name for armpit?
underarmAnother common word for armpit is "underarm," while the official anatomical term is axilla.
What does axilla mean?
armpit(ak-SIH-luh) The underarm or armpit.
Where is the axillary lymph node located?
armpitThe axillary lymph nodes are divided into 3 levels: level I (low axilla) – located in the lower part of the armpit. level II (mid axilla) – located in the middle part of the armpit. level III (high axilla) – located in the upper part of the armpit near the breastbone (sternum)
Where is the pectoral region?
chestpectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. There are two such muscles on each side of the sternum (breastbone) in the human body: pectoralis major and pectoralis minor.
How can I remember my axillary lymph nodes?
1:035:15Axillary Artery with Easy Mnemonics! - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd pot' sixties teens love sex. And pot' solo label supreme thoracic artery the rococo mio trunkMoreAnd pot' sixties teens love sex. And pot' solo label supreme thoracic artery the rococo mio trunk lateral thoracic artery subscapular trunk anterior humeral circumflex artery.
What muscles make up the axilla?
The anterior boundary of the axilla comprises the following: Pectoralis major – the largest muscle in the pectoral region, that lies over the anterior chest wall and is important in moving the arm forward and up. Clavipectoral fascia – a layer of fascia (tough connective tissue) in the pectoral region.
What does the term axillary mean the term axillary means pertaining to the?
the armpitAxillary: Pertaining to the armpit, the cavity beneath the junction of the arm and the body.
Are axillary lymph nodes cancerous?
Cancer is in the internal mammary nodes and one or more axillary lymph nodes. Four or more axillary lymph nodes are cancerous, and internal mammary nodes have micrometastases. Testing found cancerous nodes above the clavicle.
How do you check axillary lymph nodes?
To check the left side lift your arm slightly then place the fingers of your right hand high into the armpit and then lower your arm.Feel in the central area of the armpit. ... Along the front border of the armpit.Along the back border of the armpit.Feel along the inner border of the arm.
What do axillary lymph nodes feel like?
Swollen lymph nodes will feel like soft, round bumps, and they may be the size of a pea or a grape. They might be tender to the touch, which indicates inflammation. In some cases, the lymph nodes will also look larger than usual. Lymph nodes appear in parallel on both sides of the body.
Where is the axillary region located?
Description. The axillary region (also known as the arm pit) is a pyramid-shaped area located between the shoulder girdle and thorax. It serves as a space for neurovascular and lymphatic structures to travel through to reach the upper extremity from the neck.
What is the axillary artery?
The axillary artery is an extension of the subclavian artery, and is called so after passing the first rib. It is renamed and considered the brachial artery after passing the teres major and exiting the axilla. The artery is encompassed by the axillary sheath and the brachial plexus cords and branches.
Why are scapular and humeral anastomoses important?
The scapular and humeral anastomoses created by these branches are important factors to compensate if there are any occlusions of the axillary artery. The brachial plexus ' cords and branches surround the axillary artery and are named in reference to their position relative to the artery.
What is the function of the axillary vein?
Like the axillary artery, the axillary vein features anastomoses to compensate for any blockages that may form. Axillary lymph vessels and nodes process lymph from the upper extremity and chest. The superficial vessels drain the skin while the deep vessels drain the bones and muscles.
How many axillary nodes are there?
There are five groups of axillary nodes present in the axilla including pectoral, lateral, posterior (subscapular), central, and apical. In addition to the neurovascular bundle, the axillary region also contains the short head of the biceps brachii muscle, coracobrachialis muscle, fascia and adipose tissue.
Which nerves are located in the axillary region of the arm?
Within the axillary region, the brachial plexus gives rise to peripheral nerves, including the medial and lateral pectoral, medial cutaneous of arm and forearm, upper and lower subscapular, and thoracodorsal nerves, supplying muscles of the shoulder girdle and chest as well as sensation to certain areas of the upper extremity.
Which vein is the major vessel of drainage for the upper extremity?
Medial to the axillary artery lies the axillary vein, receiving deoxygenated blood from the cephalic vein, basilic vein, and other tributaries correlating with branches of the axillary artery, ultimately serving as the major vessel of drainage for the upper extremity.
What is the anal region?
anal region the part of the perineal region that surrounds the anus. axillary region the area of the upper chest surrounding the axilla, lateral to the pectoral region. epigastric region the abdominal region that is superior and central in location, above the umbilical region and between the two hypochondriac regions.
What is the lateral pectoral region?
lateral pectoral region the most lateral part of the pectoral region, bounded laterally by the axillary region. 1. the region of the back lying lateral to the lumbar vertebrae. See also loin. 2. lateral region. mammary region the part of the pectoral region surrounding the mammary gland.
What is the region of the abdomen?
region. a plane with more or less definite boundaries; called also regio. adj., adj re´gional. abdominal r's the areas into which the anterior surface of the abdomen is divided, including the epigastric, hypochondriac (right and left), iliac (right and left), lumbar (right and left), hypogastric, and umbilical.
Which region is inferior and central in location, below the umbilical region and between the two iliac (ing?
suprapubic region the abdominal region that is inferior and central in location, below the umbilical region and between the two iliac (inguinal) regions; called also hypogastric or pelvic region.
Which region is the hypochondriac region?
hypochondriac region either of the abdominal regions that are in superior lateral locations, one on the left ( left hypochondriac region) and one on the right ( right hypochondriac region) of the epigastric region ; called also hypochondrium. hypogastric region suprapubic region.
What is the precordial region?
precordial region the part of the anterior surface of the body covering the heart and the pit of the stomach. presternal region the region of the thorax overlying the sternum, bounded laterally by the pectoral regions. pubic region suprapubic region.
Which region of the breast is inferior to the pectoral region?
inframammary region the part of the pectoral region inferior to the breast, bordered inferiorly by the hypochondriac region of the abdomen.
What is the axilla?
The axilla is the space between the side of the thorax and the upper arm.
Where is the axilla in cricket?
The axilla (also, armpit, underarm or oxter) is the area on the human body directly under the joint where the arm connects to the shoulder. It also contains many sweat glands . In humans, the formation of body odor happens mostly in the armpit.
What is the lower posterior boundary?
The lower posterior boundary is called the posterior axillary fold and this is a compound structure consisting of the latissimus dorsi and teres major muscles. It can descend after weight loss.
What is the flexion surface of the neck?
Like other flexion surfaces of large joints ( groin, popliteal fossa, cubital fossa and essentially the anterior part of the neck ), it is an area where blood vessels and nerves pass relatively superficially, and with an increased amount of lymph nodes .
Which artery is viewed from the left side of the thorax?
Axillary artery and its branches - anterior view of right upper limb and thorax. The veins of the right axilla, viewed from in front. The right brachial plexus (infraclavicular portion) in the axillary fossa; viewed from below and in front. The left side of the thorax. Axilla.
What is the underarm of the arm?
The term "underarm" typically refers to the outer surface of the axilla. However, the terms are sometimes used interchangeably in casual contexts. Colloquially, underarm refers to the hollow beneath the junction of the arm and shoulder.
What is the axillary artery?
Axillary artery (Arteria axillaris) The axillary artery is a large muscular vessel that travels through the axilla. It is responsible for carrying oxygen-rich blood to the upper limb, as well as to parts of the musculocutaneous system of the scapula and upper lateral thorax .
How many parts does the axillary artery have?
As it passes through the axilla, the artery is divided into three parts by pectoralis minor, as the muscle travels superolaterally from its origin at the 3rd, 4th and 5th ribs to its insertion on the medial aspect of the coracoid process. Conveniently, each segment gives off a corresponding number of branches.
Which artery travels inferomedially along the inferior margin of the pectoralis minor muscle?
Lateral thoracic arter y. The other branch of the second part of the axillary artery is the lateral thoracic artery. It travels inferomedially along the inferior margin of pectoralis minor muscle . The lateral thoracic artery carries oxygenated blood for the structures of the thoracic wall: serratus anterior.
Which artery gives rise to two vessels?
Thoracoacromial artery. The second part of the axillary artery gives rise to two vessels. The thoracoacromial (acromiothoracic) artery is a primary trunk that gives rise to four other arteries.
Which artery is more easily palpated in the concavity of the axilla?
As a result of this attachment, the axillary artery is more easily palpated in the concavity of the axilla when the arm is adducted (close to the midline of the body) and the suspensory ligaments are relaxed, than when it is abducted (away from the midline of the body) and the suspensory ligaments are taut.
Which artery leaves the first segment above?
One branch leaves the first segment above, two branches from the second segment beneath and three branches leave the third segment below (all relative to pectoralis minor). While exiting the axilla, the axillary artery changes its name at the lower border of teres major and continues in the arm as the brachial artery .
Which branch of the humeral muscle supplies both the pectoralis major and the deltoid?
Finally, the deltoid (humeral) branch courses over the tendon over pectoralis minor, then through the deltopectoral groove (with the cephalic vein). Along this course, it supplies both pectoralis major and the deltoid muscle.
What is axillary dissection?
Axillary Dissection. If cancer is present, an axillary dissection will be performed to remove additional lymph nodes. The axillary dissection will determine how many lymph nodes have cancer. This will help determine how much treatment is needed to bring the cancer into a state of sustained remission. For women with invasive breast cancer, this is ...
What is the procedure to remove axillary nodes?
If blood and imaging tests suggest cancer, axillary nodes may be surgically removed to see if cancer is present. This is referred to as an axillary node biopsy. The biopsy can help your oncologist determine if cancer is present and begin the process of staging the disease.
What is the term for the lymph nodes in the armpit?
on September 23, 2020. Science Photo Library / Getty Images. Axilla is a medical term used to describe your armpit. Within the axilla are lymph nodes that filter toxins and disease-causing microorganisms from the body. When breast cancer occurs, these axillary nodes can begin to swell as they filter cancer cells and try to neutralize them.
Why do axillary lymph nodes swell?
When breast cancer occurs, these axillary nodes can begin to swell as they filter cancer cells and try to neutralize them. Because of their proximity to the breast, axillary lymph nodes are one of the first sites doctors will examine when diagnosing breast cancer.
What is the risk of lymphedema after axillary dissection?
The approximate risk of lymphedema following axillary dissection is 14%. This can increase to 33% if radiation therapy is used. 3 . There may also be a loss of sensation in the breast or axilla, limited arm mobility, and muscle weakness. Most of these symptoms are temporary and will improve over time.
How many nodes are removed during axillary dissection?
For women with invasive breast cancer, this is usually done at the same time as a mastectomy. During a typical axillary dissection, between two and around twenty no des on average may be removed. 2 The number of nodes is one of the key criteria for determining if the cancer is early (stage 1 to 2a) or more advanced (stage 2b to 4).
Can you lift heavy objects after axillary dissection?
Women are typically asked to avoid lifting heavy objects during recovery. Many women experience no side effects from axillary dissection. During recovery, it is important to let your doctor know if you experience abnormal symptoms, such as high fever, a pus-like discharge, or increasing pain, swelling, and redness.
How to diagnose axillary lymphadenopathy?
Diagnosis. Axillary lymphadenopathy can usually be identified with a physical exam. Your doctor may discover them during a routine checkup even if you have no symptoms. To determine the cause, they will consider several factors, including: Size of the lymph nodes. Number of swollen lymph nodes.
What is the name of the disease that affects the size and consistency of lymph nodes in the armpit?
Axillary lymphadenopathy , also known as adenopathy, describes changes in the size and consistency of lymph nodes in the armpit (axillary lymph nodes). 1 It is not a disease itself but rather a symptom associated with a range of diseases and conditions, from mild infections to breast cancer .
How many lymph nodes are there in each armpit?
Symptoms. Axillary lymphadenopathy is characterized by swelling and inflammation of one or more of the 20 to 40 axillary lymph nodes in each armpit. The swelling may involve one armpit, which is known as unilateral, or both armpits, known as bilateral. 2.
Where is the midaxillary line located?
It is situated in between the anterior axillary line and posterior axillary line.
What is the midaxillary line?
What are the most important facts to know about the midaxillary line? The midaxillary line is an imaginary line that physicians use as a reference point during a variety of procedures, such as a thoracentesis or an ECG. It passes from the armpit, downwards, dividing the body into its anterior and posterior halves.
What is the procedure called when a needle is placed between the pleural space of lungs and the chest wall?
A thoracentesis is a procedure in which a needle is placed between the pleural space of lungs and the chest wall in order to diagnose certain conditions or remove excess fluid, known as pleural effusion.
Description
- The axillary region (also known as the arm pit) is a pyramid-shaped area located between the shoulder girdle and thorax. It serves as a space for neurovascular and lymphatic structures to travel through to reach the upper extremity from the neck.
Structure/Borders
- Apex: (also known as cervicoaxillary margin, axillary inlet) region of entrance/exit of the axillary neurovascular bundle
- Base:
- Anterior Wall:
- Posterior Wall:
Contents
- The axillary artery is an extension of the subclavian artery, and is called so after passing the first rib. It is renamed and considered the brachial artery after passing the teres major and exiting the axilla. The artery is encompassed by the axillary sheath and the brachial plexus cords and branches. The axillary artery is divided into three parts with arterial branches associated with ea…
Clinical Relevance
- Thoracic Outlet Syndrome (TOS) results from the compression of nerves and/or vessels at or around the apex of the axilla. The clinical presentation and distribution of TOS is dependent upon the str...
Related Pages
Overview
The axilla (also, armpit, underarm or oxter) is the area on the human body directly under the joint where the arm connects to the shoulder. It also contains many sweat glands.
In humans, the formation of body odor happens mostly in the armpit. These odorant substances have been suggested by some to serve as pheromones, w…
Society and culture
The term "underarm" typically refers to the outer surface of the axilla. However, the terms are sometimes used interchangeably in casual contexts. Colloquially, underarm refers to the hollow beneath the junction of the arm and shoulder.
The underarm is a ticklish area, possibly due to the number of nerves it contains. Most people find this area to be particularly unpleasant when tickled.
Clinical significance
Like other flexion surfaces of large joints (groin, popliteal fossa, cubital fossa and essentially the anterior part of the neck), it is an area where blood vessels and nerves pass relatively superficially, and with an increased amount of lymph nodes.
Breast cancer typically spreads via lymphatic vessels to the lymph nodes found in the axilla.
Excessive perspiration without adequate air circulation can result in axillary intertrigo. Intertrigo i…
See also
• Deodorant
• Perspiration
• Popliteal fossa or "knee pit"
• Suspensory ligament of axilla
External links
• Step by step Video dissection of the Human Axilla showing all relevant anatomy
• 3D animated overview of axillary anatomy (rich media)
• lesson3axilla at The Anatomy Lesson by Wesley Norman (Georgetown University)