Muscles and Innervations

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Back, front, shoulder, and arm muscles

Last updated 2:03 AM on 9/1/26
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16 Terms

1
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<p>What is the trapezius action (3) and innervation? </p>

What is the trapezius action (3) and innervation?

elevate and depress shoulder

retracts scapula

cranial nerve 11

2
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<p>What is the latissimus dorsi action (2) and innervation? </p>

What is the latissimus dorsi action (2) and innervation?

Adducts humerus and pulls body toward arms (climbing or swimming)

Thoracodorsal nerve

3
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<p>What is the Levator Scapulae action (1) and innervation? </p>

What is the Levator Scapulae action (1) and innervation?

Elevates scapula

Dorsi scapular

4
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<p>What are the actions of rhomboid major and minor and their innervation?</p>

What are the actions of rhomboid major and minor and their innervation?

retracts scapula and depress the glenoid fossa

dorsal scapular

5
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<p>What is the Pectoralis major (3) and innervation? </p>

What is the Pectoralis major (3) and innervation?

Adducts humerus, protracts scapula, and medially rotates the humerus at the shoulder

Medial and lateral pectoral nerve (need both bc its a big muscle)

6
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<p>What is the pectoralis minor (1) actions and innervation?</p>

What is the pectoralis minor (1) actions and innervation?

holds scapula against thoracic wall

medial pectoral

7
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<p>What is the subclavius action (1) and innervation? </p>

What is the subclavius action (1) and innervation?

Holds clavicle to the first rib

Subclavian nerve

8
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<p>What is the serratus anterior action (1) and innervation? </p>

What is the serratus anterior action (1) and innervation?

Protracts scapula (aka punching muscle)

Long thoracic nerve

9
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<p>What are the deltoid actions (3) and innervation? </p>

What are the deltoid actions (3) and innervation?

Abducts humerus, medially and laterally rotates the humerus at the shoulder

Axillary nerve

10
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<p>What is the teres majors action (1) and innervation?</p>

What is the teres majors action (1) and innervation?

adducts humerus

lower subscapular nerve

11
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<p>What are the actions of the supraspinatus and infraspinatus muscles (1) and innervation</p>

What are the actions of the supraspinatus and infraspinatus muscles (1) and innervation

Lateral rotation of humerus

suprascapular

12
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<p>What is the teres minor action (1) and innervation </p>

What is the teres minor action (1) and innervation

Lateral rotation of humerus

axillary nerve

13
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<p>What is the Subscapularis action (1) and innervation </p>

What is the Subscapularis action (1) and innervation

Medial rotation

upper subscapular nerve

14
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<p>What are the bicep brachii actions (2) and its innervation (nerve and artery)</p>

What are the bicep brachii actions (2) and its innervation (nerve and artery)

flex and supinates forearm

nerve: musculocutaneous

artery: brachial

15
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<p>What are the coracobrachialis actions (2) and its innervation (nerve and artery)</p>

What are the coracobrachialis actions (2) and its innervation (nerve and artery)

flex arm at shoulder and adduct humerus

nerve: musculocutaneous

artery: brachial

16
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<p>What is the action of the brachialis (1) and its innervations (nerve and artery)</p>

What is the action of the brachialis (1) and its innervations (nerve and artery)

flex forearm

nerve: musculocutaneous

artery: brachial