The pectoral girdle consists of the clavicle and the scapula
Scapula
In anatomy, the scapula, also known as shoulder bone, shoulder blade, wing bone or blade bone, is the bone that connects the humerus with the clavicle. Like their connected bones the scapulae are paired, with the scapula on either side of the body being roughly a mirror image of the other. The name derives from early Roman times when it was thought that the bone resembled a trowel or small shovel.
Why is the pectoral girdle weaker than the pelvic girdle?
Why is the pectoral girdle more free than the pelvic girdle? Answer and Explanation: The pectoral girdle is weaker than the pelvic girdle because the pelvic girdle is the primary weight-bearing and locomotion structure for the body
What does the pelvic girdle protect in your body?
The pelvic girdle serves several purposes in the body. First, it, together with the vertebral column, helps to support the body's weight and maintain the body upright. The pelvic girdle also protects the important organs of the urinary system and reproductive systems, and in a female protects a devloping fetus during pregnancy.
Does a pectoral girdle have a shallow or deep socket?
There are several differences between the pectoral and pelvic girdle. One of the main differences is the size. The pectoral girdle is massive, while the pelvic one is lightweight. The pelvic girdle has deep secure sockets for limb attatchment, a pectoral one has a more shallow socket.
How does pectoral girdle and pelvic girdle differ?
Write the difference between Pectoral and Pelvic girdle. The pectoral girdle is situated in the pectoral region of the body and joins the upper limb to the body. The pelvic girdle is situated in the pelvic region of the body and joins the lower limb to the body.
What are the functions of the pectoral girdle quizlet?
It serves as the support structure for the upper limb. It includes the clavicles and scapulae.
What is the function of its pectoral girdle and pelvic girdle?
The bones that attach each lower limb to the axial skeleton form the pelvic girdle; the bones that attach each upper limb to the axial skeleton form the pectoral girdle. Therefore, the pelvic and pectoral girdles act as a bridge connecting the axial skeleton to the appendicular skeleton.
What is pectoral girdle short answer?
The shoulder, or pectoral, girdle is composed of the clavicles (collarbones) and the scapulae (shoulder blades). In humans the clavicles join the sternum (breastbone) medially and the scapulae laterally; the scapulae, however, are joined to the trunk only by muscles.
Which bones form the pectoral girdle and what is its function?
The pectoral girdle provides the main structural support for the shoulder joint. The pectoral girdle consists of two bones: Clavicle or collar bone. Scapula or shoulder blade.
What is the main action of the muscles of the pectoral girdle?
The posterior muscles of the pectoral girdle work to elevate the shoulders, retract (pull together) the scapula, move the arm, and assist in pulling the head back. The major muscles in the pectoral girdle on the posterior side of the body are the rhomboid major and minor and the trapezius.
What muscle is pectoral girdle?
Muscles that position the pectoral girdle are located either on the anterior thorax or on the posterior thorax ([link] and [link]). The anterior muscles include the subclavius, pectoralis minor, and serratus anterior. The posterior muscles include the trapezius, rhomboid major, and rhomboid minor.
What is the most important function of the pelvic girdle?
Its primary role is to support the weight of the upper body when sitting and to transfer this weight to the lower limbs when standing. It serves as an attachment point for trunk and lower limb muscles, and also protects the internal pelvic organs.
Which bone is also known as pectoral girdle?
The pectoral girdle is made up of two bones, namely clavicle and scapula. The scapula, also known as the shoulder blade, is present posteriorly in the shoulder. It helps in articulation with the collarbone and humerus bone. The clavicle , also known as the collarbone, is present anteriorly to the shoulder.
What is the pectoral girdle quizlet?
The Pectoral (shoulder) Girdle is part of the appendicular skeleton and consists of the clavicle and scapula posteriorly. The Scapula (Shoulder Blade) are thin, triangular flat bones commonly called "wings" of humans. The Glendoid Cavity is the shallow socket that receives the head of the humerus.
What does the pectoral girdle consists of?
3 The pectoral girdle consists of the epiplastron (clavicle), the entoplastron (interclavicle), the scapula, the acromion process, and the coracoid bone.
Where is the pectoral girdle on a skeleton?
shoulder girdleThe shoulder girdle or pectoral girdle is the set of bones in the appendicular skeleton which connects to the arm on each side. In humans it consists of the clavicle and scapula; in those species with three bones in the shoulder, it consists of the clavicle, scapula, and coracoid.
What is difference between pectoral and pelvic girdle?
The hip girdle is also known as pelvic girdle....Pectoral girdlePelvic girdleIt is made up of two bones, i.e., Clavicle and Scapula.It is made up of three bones, i.e., Ilium, Ischium and Pubis.The two halves are far apart.The two halves are fused.6 more rows
How are the pelvic girdle and the pectoral girdle similar?
Therefore, we can conclude that both pectoral and pelvic girdle are the bones which connect the appendicular skeleton to the axial skeleton. The appendicular skeleton includes the bones of forelimbs and hindlimbs, whereas the axial skeleton consists of the vertebral column's bones.
What is the function of pelvic girdle and name its three bones?
The pelvic girdle forms the bony framework of the pelvis together with the sacrum of the vertebral column and coccyx. It provides support and stability to the body and transfers the weight of the upper body from the axial skeleton to the hips and lower limbs. It also protects the abdominal and pelvic visceral organs.
What is the difference between pelvic girdle and pelvis?
The two hip bones (also called coxal bones or os coxae) are together called the pelvic girdle (hip girdle) and serve as the attachment point for each lower limb. When the two hip bones are combined with the sacrum and coccyx of the axial skeleton, they are referred to as the pelvis.
Q1. What are the Pectoral Muscles?
Answer. Any muscle which connects the front wall of the chest with the bones of the upper arm and the shoulder known as pectoral muscles. There are...
Q2. Why is the Pelvic Girdle more Stable than the Pectoral Girdle?
Answer. Pectoral girdle bones are highly mobile to enhance the range of upper limb movements. The bones of the pelvis are strongly united to each o...
Q3. How can you Build Your Pectoral Muscles?
Answer. Pectoral muscles can be built by doing exercises like - dumbbell squeeze press, Incline barbell bench press, incline dumbbell bench press,...
What is the pectoral girdle?
Associated Conditions. Rehabilitation. The pectoral girdle, also known as the shoulder girdle, is the set of bones that connects the arm to the rest of the skeleton. It provides support and stabilization to allow the shoulder to move. The joints of the pectoral girdle can become damaged after injury or repetitive overuse of the shoulder.
What causes the pectoral girdle to become damaged?
The bones and joints of the pectoral girdle can become damaged from injury or repetitive overuse of the shoulder. Common conditions associated with the pectoral girdle include:
Which structure provides support and stabilization to allow the shoulder to move?
The pectoral girdle connects the arm to the rest of the skeleton and provides support and stabilization to allow the shoulder to move. The scapula provides the primary structural support for the shoulder and can move in six different directions. These are protraction and retraction (forward and backward movement) elevation and depression ...
What is the main structural support for the shoulder joint?
The pectoral girdle provides the main structural support for the shoulder joint. The pectoral girdle consists of two bones:
What is the function of the pectoral girdle?
There must be a degree of mobility at the shoulder region for the arms to move. The pectoral girdle serves as a location of attachment for many muscles of the back, chest, and neck that help the upper limbs move.
What are the characteristics of the pectoral girdle?
A unique characteristic of the pectoral girdle is that it can move in many directions. The girdles are very light and allow the upper limbs a high degree of mobility not seen anywhere else in the body. This mobility is due to the following factors:
What is the function of clavicle?
The clavicles are slender, S-shaped bones that can be felt along their entire course as they extend horizontally across the superior thorax. In addition to anchoring many muscles, the clavicles act as braces: They hold the scapulae and arms out laterally, away from the narrower superior part of the thorax. This bracing function becomes obvious when a clavicle is fractured, as the entire shoulder region collapses medially. The clavicles also transmit compression forces from the upper limbs to the axial skeleton, for example, when someone pushes a car to a gas station.
What are the two parts of the skeletal system?
The skeletal system is divided into two general regions, the axial skeleton and the appendicular skeleton. The axial skeleton forms the central axis of the body, including the skull, vertebral column, and thoracic cage. The appendicular skeleton includes all of the limb bones, plus the bones that unite each limb with the axial skeleton. The bones that attach each lower limb to the axial skeleton form the pelvic girdle; the bones that attach each upper limb to the axial skeleton form the pectoral girdle. Therefore, the pelvic and pectoral girdles act as a bridge connecting the axial skeleton to the appendicular skeleton.
What is the shape of the clavicle?
Each clavicle is cone-shaped at its medial end, which attaches to the sternal manubrium; it is flattened at its lateral acromial end, which articulates with the acromion of the scapula. The medial two-thirds of the clavicle is convex anteriorly while its lateral third is concave anteriorly. The clavicles are relatively weak and easily fractured, as when someone uses an outstretched arm to break their fall. The curves in the clavicle ensure that it typically fractures anteriorly. If it were to collapse posteriorly (inward), bone splinters would damage the subclavian artery beneath it.
Is the pectoral girdle good or bad?
Although this arrangement is very good for flexibility, it is bad for shoulder stability. Injuries to the pectoral girdle are fairly common.
What is the function of the pectoral girdle?
The pectoral girdle is the part of an appendicular skeleton. The main function of the pectoral girdle is to connect the upper limbs to the axial skeleton. The human skeleton is divided into two sections, they are the axial skeleton and the appendicular skeleton. The axial skeleton is made of 80 bones, including the skull, the vertebral column, ...
Why is the pectoral girdle important?
After going through the complete information provided above which included pectoral girdle definition, pectoral girdle bones, functions, and also anatomy, we can understand that the pectoral girdle is very important to provide structural support to the shoulder region on the left and right side of the human body.
Why are the pelvic girdle bones so mobile?
Answer. Pectoral girdle bones are highly mobile to enhance the range of upper limb movements. The bones of the pelvis are strongly united to each other to be largely immobile. This enhances stability by transferring the weight of the body laterally from the vertebral column, through the pelvic girdle and hip joints.
Which part of the skeleton connects the arm to the rest of the skeleton?
The pectoral girdle connects the arm to the rest of the skeleton and It also provides support and stabilization, which allows the shoulder to move.
Which bones help with the articulation of the axial limb?
Pectoral girdle bone s also help in the articulation of the axial limb to the axial skeleton: it also aids in the movement of arms and shoulders, the right and left parts of the shoulder which are not joined together and it allows independent movement.
Which skeleton is the pectoral girdle?
The pectoral girdle and bones of the free part of the upper limb form the superior appendicular skeleton, while the pelvic girdle and bones of the free part of the lower limb form the inferior appendicular skeleton.
What is the shoulder girdle?
The shoulder girdle is also called the pectoral girdle, and it is a bone ring, incomplete posteriorly. The shoulder girdle is formed by two sets of bones : the scapulae, posteriorly, the clavicles anteriorly and completed anteriorly by the manubrium of the sternum (part of the axial skeleton).
What is the clavicle?
Clavicle. The clavicle or collar bone is an S-shaped long bone lying superficial and is palpable along its entire length (figure 3). It connects the upper limb to the trunk. The shaft (body) of the clavicle has a double curve in a horizontal plane.
What nerves supply the glenohumeral joint?
The nerve supply include the axillary, suprascapular, and the lateral pectoral nerves. Try out our quiz to solidify your knowledge about the glenohumeral joint.
What is the girdle of the axial skeleton?
These bones connect the arms on each side, and the girdle actually functions as the anchor that attaches the appendages to the axial skeleton. Key facts.
Where is the shoulder blade?
The shoulder blade or scapula is a triangular flat bone (figure 4 below) that lies on the posterolateral aspect of the thorax, overlying the 2nd – 6th or 7th ribs.
Which muscle is smooth and attaches to the 1st rib?
The superior surface of the clavicle, lying just deep to the skin and platysma muscle in the subcutaneous tissue, is smooth. The inferior surface of the clavicle is rough and attaches to the 1st rib near its sternal end and suspends the scapula from its acromial end.
