Function: Clavicular head flexes and adducts arm. Sternal head adducts and medially rotates the arm.
Which shoulder muscle adducts and medially rotates the arm at the shoulder joint?
It finally inserts on to the bottom of the intertubercular groove. Latissimus dorsi extends, adducts and medially rotates the arm. It also draws the shoulder downward and backward and keeps the inferior angle of the scapula against the chest wall.
What muscle adducts the arm and flexes the shoulder?
Finally, the coracobrachialis flexes and adducts the arm. The tendons of the deep subscapularis, supraspinatus, infraspinatus, and teres minor connect the scapula to the humerus, forming the rotator cuff (musculotendinous cuff), the circle of tendons around the shoulder joint.
Which muscle adducts the arm at the shoulder?
Teres Major: The teres major is a thick flattened muscle connecting the lower scapula with the humerus. Attachments: Originates from the posterior of the scapula and attaches to the humerus. Actions: Adducts the shoulder and assists in rotation of the arm.
Which muscle flexes adducts and medially rotates the arm quizlet?
which of the following muscles extends, adducts, and medially rotates the arm? The superior portion of the trapezius elevates the scapula, the middle portion adducts the scapula, and the inferior portion depresses the scapula.
Which muscle extends adducts and medially rotates the arm humerus )?
Latissimus dorsi works collaboratively with the teres major and pectoralis major to perform actions of the upper extremity. Together, these muscles will work to adduct, medially rotate and extend the arm at the glenohumeral joint.
Which muscle flexes the hand and abducts the hand?
In anatomy, flexor carpi radialis is a muscle of the human forearm that acts to flex and (radially) abduct the hand.
Flexor carpi radialis muscle.
|Flexor carpi. radialis muscle|
|Actions||Flexion and abduction at wrist|
|Antagonist||Extensor carpi ulnaris muscle|
What muscles abduct the arm?
The primary muscles involved in the action of arm abduction include the supraspinatus, deltoid, trapezius, and serratus anterior.
What muscle flexes the wrist and adducts hand?
Flexor carpi ulnaris muscle (FCU) is the most medial flexor muscles in the superficial compartment of the forearm. It can adduct and flex the wrist at the same time; acts in tandem with FCR to flex the wrist and with the extensor carpi ulnaris to adduct the wrist.
What muscle adducts and rotates the thigh?
On the medial part of the thigh, the adductor longus, adductor brevis, and adductor magnus adduct the thigh and medially rotate it. The pectineus muscle adducts and flexes the femur at the hip.
What muscle flexes upper arm and helps abduct it?
Muscles of the upper extremity help to move the shoulder (scapula) and arm (humerus) and the forearm, wrist, hand, and fingers.
|Pectoralis Major||Anterior part of the chest||Flexes the upper arm and helps to abduct the upper arm|
What muscle flexes the arm at the elbow?
Triceps brachii: muscle in the back of the upper arm that extends the arm and fixes the elbow during fine movements. Brachialis: upper arm muscle beneath the biceps which flexes the elbow towards the body. Brachioradialis: forearm muscle that flexes, straightens and pulls the arm at the elbow.
What muscle extends and adducts the shoulder?
The teres major provides internal rotation, extension, and adduction of the shoulder; it’s considered a fusiform muscle. The subscapularis muscle internally rotates the humerus; the upper portion of the muscle influences abduction, while the lower area influences adduction.
What muscles flex the arm quizlet?
Terms in this set (13)
- Biceps brachii. Flexes and supinates forearm, flexes arm.
- Brachialis. Flexes forearm.
- Triceps brachii. All three heads extend forearm and help extend arm.
- Brachioradialis. …
- Pronator teres. …
- Flexor carpi radialis. …
- Palmaris longus. …
- Flexor carpi ulnaris.
What two muscles can flex the arm at the shoulder quizlet?
Terms in this set (27)
- coracobrachialis. flexes and adducts arm at shoulder joint.
- pectoralis major. at shoulder joint adducts and medially rotates arm , flexes arm and extends the flexed arm to side of trunk (push up)
- latissimus dorsi. …
- supraspinatus. …
- infraspinatus. …
- subscapularis. …
- deltoid. …
- teres minor.
Which muscles rotate the arm at the shoulder quizlet?
Terms in this set (26)
- latissimus dorsi. ACTION: extends, adducts, and medially rotates arm at shoulder joint. …
- pectoralis major. …
- serratus anterior. …
- trapezius. …
- levator scapulae. …
- rhomboid minor. …
- rhomboid major. …