What are the scapular muscles that move the humerus?
Nine muscles cross the shoulder joint to move the humerus. The ones that originate on the axial skeleton are the pectoralis major and the latissimus dorsi. The deltoid, subscapularis, supraspinatus, infraspinatus, teres major, teres minor, and coracobrachialis originate on the scapula.
Which muscle has attachments on the scapula humerus and ulna?
Posterior Compartment Triceps Brachii: The triceps brachii is a three-headed muscle. Attachments: The long head originates from the scapula, the lateral head from the proximal region of the humerus, and the medial head from the distal region of the humerus. All three converge into one tendon which attaches to the ulna.
Which of the following muscles moves the humerus?
What muscle moves the scapula?
serratus anterior muscle
When the whole serratus anterior muscle contracts, it pulls the scapula forward around the rib cage: that’s protrusion. When its upper, or lower fibers contract separately, they help to produce downward or upward rotation of the scapula.
How do you improve scapular depression?
Gently squeeze your shoulder blades together, then slowly lift your arms so they are parallel to your body. Rotate arms out, bringing your thumbs up. Hold for 5 seconds, then lower your arms back down and repeat.
What part of the body help the muscle in the arm to pull upward?
The trapezius and serratus anterior muscles work in tandem to coordinate rotation and movement of the scapula to accommodate the full range of motion of the arm. Specifically, they facilitate abduction of the arm from 90 degrees and further upwards.
Which muscle does not move the upper arm?
Axial and Appendicular Muscle
| Question | Answer |
|---|---|
| Which of the following muscles does not move the upper arm? | Trapezius |
| The action of the brachialis muscle is to _____ the forearm. | Flex |
| In pushing (pressing) a weight from shoulder height to above the head, which of the following muscles is least utilized? | Biceps brachii |
Which muscle is deep to the scapula?
The pectoralis minor muscle is a small triangular shaped muscle that lies deep to pectoralis major muscle and passes as three muscular slips from the thoracic wall (ribs III to V) to the coracoid process of the scapula.
What muscle does not attach to the scapula?
The muscle that does not attach to the scapula is the latissimus dorsi.
Where are the muscles of the humerus located?
Biceps Brachii: A muscle of the anterior compartment of the upper arm that flexes the forearm. Triceps Brachii: A muscle of the posterior compartment of the upper arm that extends the forearm. The humerus is a long bone in the arm that runs from the shoulder to the elbow.
Where does the subscapularis of the scapula originate?
Subscapularis 12 Origin: Medial two-thirds of volar surface of the scapula Insertion: Lesser tubercle of humerus Action: • Internally rotates humerus • Assists with depression of the humeral head Innervation: Upper and Lower Subscapular Nerve (C5,6) Blood Supply: Subscapular artery from the axillary artery 13. 10.
What are the names of the muscles of the shoulder?
1.Origin, Insertion, Action, Innervation and Blood Supply. 2. Bursae in shoulder joint 3. Muscles of shoulder 4. Clavicle, scapula and humerus 1. Muscle of Shoulder ( Clavicle, Scapula & Humerus ) 1 2. a. Muscles of pectoral girdle b. Muscles associated with scapula c. Muscles of the anterior/posterior compartment of arm 2 3. a.
Where does the pronator teres attach to the humerus?
Pronator Teres: A rectangular muscle located in the superficial region of the anterior compartment. Attachments: The pronator teres has two origins, one on the proximal end of the humerus and one of the distal end of the ulna. It attaches to the mid region of the radius.