Exercise 5 Describe how and a. Serratus anterior where you palpate the following
ID: 257714 • Letter: E
Question
Exercise 5 Describe how and a. Serratus anterior where you palpate the following muscles on a human subject 1. b. Trapezius Rhomboid major and minor d. Levator scapulae e. Pectoralis minor Note: "How" means palpating during active contraction and possibly resisting a primary movement of the muscle. Some muscles have several primary movements, such as the trapezius with rotation upward and adduction. "Where" refers to the- location on the body where the muscle can be felt. Palpate the sternoclavicular and acromioclavicular joint movements and the muscles a. Adduction b. Abduction c. Rotation upward d. Rotation downward 2. primarily involved while demonstrating the following shoulder girdle movements: e. Elevation f. DepressionExplanation / Answer
1 . a
he serratus anterior causes several different actions of the scapula and upper extremities of the body. The serratus anterior a muscle that originates on the top surface of the eight or nine upper ribs. The serratus anterior muscle inserts exactly at the front border of the scapula, or shoulder blade.
The function of the serratus anterior muscle is to allow the forward rotation of the arm and to pull the scapula forward and around the rib cage. The scapula is able to move laterally due to the serratus anterior muscle, which is vital for the elevation of the arm. The serratus anterior muscle also allows the upward rotation of the arm, which allows a person to lift items over their head.
(b)
The trapezius muscle is a postural and active movement muscle, used to tilt and turn the head and neck, shrug, steady the shoulders, and twist the arms. The trapezius elevates, depresses, rotates, and retracts the scapula, or shoulder blade.
The trapezius is the most superficial (nearest to the skin) of the back, neck, and upper trunk muscles. This triangular muscle is broad and flat, lying just beneath the skin and covering the upper back of the shoulders and neck. It links to the dorsal vertebrae of the spine, scapulae, clavicles, and ribs.
(c)
The rhomboid major muscle is located in the back region and helps keep the scapula, or shoulder blade, attached to the ribcage. It also rotates the scapula and retracts it towards the spinal column. It has origination points in the second, third, fourth, and fifth thoracic vertebrae (T2 though T5).
in human anatomy, the rhomboid minor is a small skeletal muscle on the back that connects the scapula with the vertebrae of the spinal column.Located inferior to levator scapulae and superior to rhomboid major.
Together with the rhomboid major, the rhomboid minor retracts the scapula when trapezius is contracted. The rhomboid major and minor elevate the medial border of the scapula medially and upward, working in tandem with the levator scapulae muscle to rotate the scapulae downward. While other shoulder muscles are active, the rhomboid major and minor stabilize the scapula.
(d)
evator scapulae muscle is located at the side and back of the neck. It is one component of the muscular system of the shoulder.
Its primary function is to lift the scapula, which is the triangle-shaped bone located at the back of the shoulder that connects the upper arm bone (humerus) with the clavicle (collarbone).
(e)
The primary actions of this muscle include the stabilization, depression, abduction or protraction, upward tilt, and downward rotation of the scapula.
The pectoralis minor is a thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major in the human body. This muscle extends from three origins on the third, fourth, and fifth ribs on each side of the ribcage to the coracoid process (a small, hook-like structure) of the scapula, or shoulder blade. The origins of the muscle are all lateral to the costal cartilages.
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