what muscle is a large superficial fan shaped muscle

What muscles are in the anterior fold of thorax?

is a large, thick, fan-shaped muscle that covers the superior part of the thorax and forms the anterior fold of the thorax. Moves the humerus. Clavicle (clavicular head), sternum, and costal cartilages of second to sixth ribs and sometimes first to seventh ribs (sternocostal head).

What is the muscle between the ribs called?

(When your shoulders are hunched forward, this muscle is contracting. Serratus anterior A large, flat, fan-shaped muscle positioned between the ribs and the scapula. Named after its saw-toothed appearance of its origins visible on the upper ribs. Serratus anterior Origin = anterior and superior margins of upper ribs.

What is the name of the rounded muscle?

a rounded muscle names for its location in the supraspinous fossa of the scapula. Supraspinous fossa of scapula. Assists deltoid muscle in abducting arm at shoulder joint. is a triangular muscle, also named for its location in the infraspinous fossa of the scapula.

What muscles are involved in hunched shoulders?

(When your shoulders are hunched forward, this muscle is contracting. Serratus anterior A large, flat, fan-shaped muscle positioned between the ribs and the scapula.

What is a large superficial fan-shaped muscle?

Pectoralis major is a large, fan-shaped, superficial muscle located on the anterior thoracic wall.

What is the most superficial muscle?

Sternocleidomastoid muscle location After the platysma, it's the most superficial neck muscle and is also one of the biggest.

What is the most superficial shoulder muscle?

The superficial extrinsic muscles are the trapezius and latissimus dorsi. The deep extrinsic muscles are levator scapulae and two rhomboids that are situated in the upper back, under the trapezius.

What is the large fan-shaped muscle that covers the anterior chest?

Pectoralis major is the large, fan-shaped muscle that covers the anterior chest and is an adductor muscle, which will cause the shoulder to flex.

Which muscles are superficial?

Superficial muscles are close to the surface of the skin. Muscles which lie closer to bone or internal organs are called deep muscles.

What are examples of superficial muscles?

Superficial muscles of your back and core are located just beneath your skin. That includes the latissimus dorsi, trapezius, rhomboid, and levator scapula muscles in your back. In your core, the outermost muscle is the rectus abdominus.

What are the two most superficial muscles of the shoulder?

Superficial. There are two superficial extrinsic muscles – the trapezius and latissimus dorsi. The trapezius is a broad, flat, and triangular muscle. The muscles on each side form a trapezoid shape.

Is deltoid a superficial muscle?

The deltoid is a superficial muscle of the shoulder, thus it lies deep only to its overlying fascia, the platysma muscle and skin.

What's the shoulder muscle called?

The primary muscle group that supports the shoulder joint is the rotator cuff muscles. The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis. Together the rotator cuff muscles form a musculotendinous cuff as they insert on the proximal humerus.

Is the pectoralis major superficial or deep?

superficial muscleThe pectoralis major muscle is a broad superficial muscle found superficially in the anterior chest wall. In males, it is covered by the deep layer of fascia, subcutaneous tissue and the adjacent skin. In females, it is covered by the breast.

What is the serratus muscle?

Introduction. The serratus anterior is a fan-shaped muscle that originates on the superolateral surfaces of the first to eighth ribs or the first to ninth ribs at the lateral wall of the thorax and inserts along the superior angle, medial border, and inferior angle of the scapula.

What is the pectoralis muscle?

The pectoralis major is the superior most and largest muscle of the anterior chest wall. It is a thick, fan-shaped muscle that lies underneath the breast tissue and forms the anterior wall of the axilla.

Is the trapezius superficial or deep?

The trapezius muscle is a large superficial back muscle that resembles a trapezoid. It extends from the external protuberance of the occipital bone to the lower thoracic vertebrae and laterally to the spine of the scapula. The trapezius has upper, middle, and lower groups of fibers.

Is the deltoid muscle superficial or deep?

superficial muscleThe deltoid is a superficial muscle of the shoulder, thus it lies deep only to its overlying fascia, the platysma muscle and skin.

What are the two most superficial muscles of the shoulder?

Superficial. There are two superficial extrinsic muscles – the trapezius and latissimus dorsi. The trapezius is a broad, flat, and triangular muscle. The muscles on each side form a trapezoid shape.

What are the superficial muscles of the chest?

The muscles of the thorax discussed in this article include the following:Thoracic Wall. Intercostal muscles. External intercostal muscle. ... Posterior Thorax. Levatores costarum. Serratus posterior superior and inferior muscles.Anterior/Superficial Thorax.Pectoralis major and minor muscles. Subclavius. ... Floor.Diaphragm.

Where is the fan shaped muscle located?

is a thick, fan-shaped muscle, situated at the chest (anterior) of the human body.

Which muscle flexes the knee and foot?

the chief muscle of the calf of the leg, which flexes the knee and foot. It runs to the Achilles tendon from two heads attached to the femur.

Where is the longest muscle in the body?

longest muscle in the entire human body. It is a long, thin, band-like muscle found in the anterior region of the thigh

Where does the scapula muscle originate?

is a muscle that originates on the surface of the 1st to 8th ribs at the side of the chest and inserts along the entire anterior length of the medial border of the scapula.

Which muscle pulls the mandible upward in jaw?

The masseter is the key muscle that pulls the mandible upward in jaw.

Where does the facial muscle frown originate?

a facial muscle associated with frowning. It originates from the mandible and inserts into the angle of the mouth

What is the thick layer of dense fibrous tissue that covers the upper part of the cranium?

is an aponeurosis (a tough layer of dense fibrous tissue) which covers the upper part of the cranium in humans and various other animals.

What muscle is the fan shaped muscle?

large fan-shaped muscle covering the upper part of the chest; forms the anterior wall of the axilla

Where does the smiling muscle extend?

extends from the corner of the mouth to the cheekbone; "smiling" muscle

Where is the scapula located?

located at the back of neck; deep to trapezius; thick straplike muscle border of scapula

What is the function of the humerus?

function: adduct and flex the arm (humerus)

What is the name of the muscle on the side of the neck?

pair of two-headed muscles, one found on each side of the neck, "prayer" muscle

Which muscle is partially covered by deltoid and trapezius?

rotator cuff muscle; partially covered by deltoid and trapezius

Which muscles make up the lateral walls of the abdomen?

paired superficial muscles, make up the lateral walls of the abdomen, fibers run obliquely

Which muscle is the largest and heaviest?

is the largest and heaviest of the three muscles. Iliac crest, sacrum, coccyx, and aponeurosis of sacrospinalis/ Iliotubial tract of fascia lata and superior lateral part of linea aspera ( gluteal tuberosity) under greater trochanater of femur. Extends thigh at hip joint laterally rotates thigh; helps lock knee in extension. RMA: extends torso

What is the largest muscle in the body?

The muscle is actually a composite muscle, usually described as four separate muscles: (1) rectus femoris, on the anterior aspect of the thigh, (2) vastus lateralis, on the lateral aspect of the thigh, (3) vastus medialis, on the medial aspect of the thigh, and (4) vastus intermedius, located deep to the rectus femoris between the vastus lateralis and vastus medialis

What is the muscle on the medial side of the thigh?

is a long, straplike muscle on the medial aspect of the thigh and knee. Body and inferior ramus of pubis/ Medial surface of body of tibia. Adducts thigh at hip joint, medially rotates thigh, and flexes leg at knee joint

What is the muscle between the ribs and scapula?

is a large, flat, fan-shaped muscle between the ribs and scapula. It is so names because of the saw-toothed appearance of its origins on the ribs. Superior eight or ninth rib. Abducts scapula and rotates it upward. RMA: Elevates ribs when scapula is stabilized. Known as "boxers muscle" because it is important in horizontal arm movements such as punching and pushing.

Where is the flexor located?

is a large muscle located on the anterior surface of the arm. As indicated by its name, it has two heads of origin (long and short), both from scapula. The muscle spans both the shoulder and elbow joints. In addition to its role in flexing the forearm at the elbow joint, it also supinates the forearm at the radioulnar joints and flexes the are at the shoulder joint. Long head originates from tubercle above glenoid cavity of scapula (supraglenoid tubercle). Short head originates from coracoid process of scapula. Flexes forearm at elbow joint, aupinates forearm at radioulnar joints, and flexes arm at shoulder joint

Where is the scapula muscle located?

is a triangular muscle, also named for its location in the infraspinous fossa of the scapula. Laterally rotates arm at shoulder joint

Where is the Linea Apera of the femur?

Linea apera of femur/ Patella via quadriceps tendon and then tibial tuberosity via patellar ligament. On the medial aspect of the thigh. Extend leg at knee joint

What muscle is the swimmer's muscle?

Broad triangular muscle located on the inferior part of the back. It is the prime arm extensor and is often referred to as the "swimmer's muscle" because many of its actions are required for certain swimming strokes.

Where is the diamond shaped muscle located?

A large flat diamond-shaped muscle that extends from the skull and vertebral column to the pectoral girdle laterally. It is visible on the posterior surface of the body.

What is the deep fascia of the thigh?

Deep fascia of the thigh. It partitions the thigh muscles into compartments, each with its own blood and nerve supply.

What is the origin of the scapula?

Origin = sternal ends of upper ribs. Insertion = Coracoid process of scapula. Action = protracts and depresses the scapula. (When your shoulders are hunched forward, this muscle is contracting.

Where are the parallel bands of the scapula located?

Located deep to the trapezius, and not visible on the surface. These muscles are parallel bands that run inferolaterally from the vertebrae to the scapula. They are antagonistic to the serratus anterior and the pectoralis minor.

Where do fibrous bands form?

Thickened, fibrous bands formed from the deep fascia of the forearm. At the wrist

Which muscles are extrinsic?

Extrinsic muscles (of the wrist and hand)