Lab3 and 4 muscles

Question 1

biceps brachii

Answer 1

musculocutaneous nerve, brachial artery, flexes forearm, long head flexes arm, supinates

Question 2

pectoralis major

Answer 2

medial and lateral pectoral nerves, pectoral branch of thoracoacromial artery, flexes and adducts the arm, medially rotates arm

Question 3

pectoralis minor

Answer 3

medical pectoral nerve, pectoral branch of the thoracoacromial artery, draws scapula forward, medial ward and downward.

Question 4

platysma

Answer 4

cervical branch of facial nerve, facial artery, draws corners of mouth down, aids in depression of mandible

Question 5

sternocleidomastoid tendon

Answer 5

spinal accessory nerve (c2-C3), sternocleidomastoid branch of occipital artery, draws mastoid process down, aids in flexing neck

Question 6

subclavius

Answer 6

subclavius nerve, clavicular branch of thoracoacromial artery, draws clavicle down and forward

Question 7

brachialis

Answer 7

musculocutaneous nerve, brachial artery, radial recurrent artery, flexes forearm

Question 8

coracobrachialis

Answer 8

musculocutaneous nerve, brachial artery, flexes and adducts arm

Question 9

serratus anterior

Answer 9

long thoracic nerve C5-C7, lateral thoracic artery, draws scapula forward, inferior fibers rot scapula superiorly

Question 10

subscapularis

Answer 10

upper and lower sub scapular nerves, subscapular artery, medially rotates arm, assists in arm extension

Question 11

supraspinatus

Answer 11

supra scapular nerve C5-C6 (from superior trunk of b. plexus) suprascapular artery, abducts arm

Question 12

Latissimus Dorsi

Answer 12

Thoracodorsal from posterior of brachial plexus, thoracodorsal artery, extends arm and rotates arm medial

Question 13

Teres major

Answer 13

lower subcapular nerve (posterior cord of b. plexus), circumflex scapular artery, adducts arm, medially rotates arm, assists in arm extension.