shoulder muscles

Question 1

Where does the supraspinatus originate?

Answer 1

supraspinanous fossa (scapula)

Question 2

Where is the insertion point of the supraspinatus?

Answer 2

Greater tubercle (humerus)

Question 3

What action does the supraspinatus produce?

Answer 3

shoulder abduction

Question 4

what nerve is the supraspinatus innervated by?

Answer 4

suprascapular nerve

Question 5

This muscle originates at the infraspinous fossa (scapula)

Answer 5

Infraspinatus muscle

Question 6

Where is the infraspinatus inserted?

Answer 6

Greater tubercle (humerous)

Question 7

Action of infraspinatus

Answer 7

shoulder EROT

Question 8

what nerve is the infraspinatus innervated by?

Answer 8

Suprascapular nerve

Question 9

Where does the teres minor originate?

Answer 9

inferior lateral border of scapula

Question 10

What is the insertion point of the teres minor?

Answer 10

greater tubercle (humerous)

Question 11

what action does the teres minor exhibit?

Answer 11

shoulder EROT and extension

Question 12

what nerve innervates the teres minor muscle?

Answer 12

axillary nerve

Question 13

the subscapular fossa (scapula) is the originate point of this muscle

Answer 13

subscapularis

Question 14

what is the insertion point of the subscapularis?

Answer 14

lesser tubercle (humerus)

Question 15

what action does the subscapularis produce?

Answer 15

shoulder IROT

Question 16

what bones do the pectoralis major originate at?

Answer 16

clavicle (clavicular head), sternum, upper ribs (sternocostal head)

Question 17

where are the insertion point(s) of the pectoralis major?

Answer 17

greater tubercle and intertubercular sulcus of humerus

Question 18

what action does the pectoralis major produce?

Answer 18

shoulder abduction and IROT

Question 19

what nerve(s) innervate the pectoralis major?

Answer 19

medial and lateral pectoral nerves

Question 20

the latissimus dosi muscle originates at

Answer 20

spines of T7 to L5, crests of sacrum and ilium, ribs 9 to 12

Question 21

what is the insertion point of the latissimus dorsi?

Answer 21

intertubercular sulcus of humerus

Question 22

action of latissmus dorsi?

Answer 22

shoulder extension, adduction, IROT; draws arm inferiorly and posteriorly

Question 23

what nerve innervates the latissmus dorsi?

Answer 23

thoracodorsal nerve

Question 24

where does the pectoralis minor originate?

Answer 24

ribs 3 to 5

Question 25

insertion point of pectoralis minor?

Answer 25

coracoid process of scapula

Question 26

what does the pectoralis minor do?

Answer 26

abducts and downward rotation of scapula

Question 27

what nerve cause this action of the pectoralis minor?

Answer 27

medial pectoral nerve