Anatomy - Building blocks of life

Question 1

What is the innervation and action of pectoralis major

Answer 1

Lateral and Medial pectoral nerves

Adducts and medially rotates shoulder joint

Question 2

What is the innervation and action of pectoralis minor

Answer 2

Medial pectoral nerve

Stabilizes scapula

Question 3

What is the innervation and action of subclavius

Answer 3

Subclavian nerve

Stabilizes clavicle

Question 4

What is the innervation and action of serratus anterior

Answer 4

Long thoracic nerve

Rotates scapula

Question 5

What is the innervation and action of trapezius

Answer 5

Spinal accessory nerve

Rotate glenoid cavity superiorly

Question 6

What is the innervation and action of latissimus dorsi

Answer 6

thoracodorsal nerve

Extends. adducts and medially rotates shoulder joint

Question 7

What is the innervation and action of levator scapulae

Answer 7

Dorsal scapular nerve

Elevates and rotates scapula

Question 8

What is the innervation and action of rhomboid major and minor

Answer 8

Dorsal scapula nerve

Rotate scapula and attach it to the thoracic wall

Question 9

What is the innervation and action of deltoid

Answer 9

Axillary nerve

Abducts shoulder, rotates shoulder joint

Question 10

What is the innervation and action of supraspinatus

Answer 10

Suprascapular nerve

Assists abduction of shoulder joint

Question 11

What is the innervation and action of infraspinatus

Answer 11

Suprascapular nerve

Laterally rotates shoulder

Question 12

What is the innervation and action of teres minor

Answer 12

Axillary nerve

Laterally rotates shoulder

Question 13

What is the innervation and action of teres major

Answer 13

Lower subscapular nerve

Adducts and medially rotates shoulder

Question 14

What is the innervation and action of subscapularis

Answer 14

Upper and lower subscapular nerve

medially rotates and adducts shoulder joint

Question 15

What is the innervation and action of biceps brachii

Answer 15

Musculocutaneous nerve

Supinates forearm; once supinated flexes elbow and shoulder

Question 16

What is the innervation and action of brachialis

Answer 16

Musculocutaneous nerve

Flexes elbow joint

Question 17

What is the innervation and action of coracobrachialis

Answer 17

Musculocutaneous nerve

helps flex and adduct shoulder joint

Question 18

What is the innervation and action of triceps brachii

Answer 18

Radial nerve

Extensor of elbow joint

Question 19

What is the innervation and action of aconeous

Answer 19

Radial nerve

Assists extending triceps joint

Question 20

What forearm muscles are innervated by the median nerve

Answer 20

Pronator teres
Flexor carpi radialis
Palmaris longus
flexor digitorim superficialis
Flexor digitorum profundus
flexor pollicis longus

Question 21

What are the forearm muscles innervated by the ulnar nerve

Answer 21

Flexor carpi ulnaris

Question 22

What are the muscles of the anterior forearm

Answer 22

Pronator teres
Flexor carpi radialis
Palmaris longus
flexor digitorim superficialis
Flexor digitorum profundus
flexor pollicis longus
Flexor carpi ulnaris

Question 23

What are the muscles of the forearm innervated by the radial nerve

Answer 23

Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor capri ulnaris
Supinator
Abductor pollicis longus
Extensor pollicis longus
Entensor pollicis brevis
Extensor indicis

Question 24

What are the muscles of the posterior forearm

Answer 24

Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor capri ulnaris
Supinator
Abductor pollicis longus
Extensor pollicis longus
Entensor pollicis brevis
Extensor indicis

Question 25

What muscles of the hands are innervated by the median nerve

Answer 25

Oppenens pollicis Abductor pollicis brevis Flexor pollicis brevis 1st and 2nd lumbricals

Question 26

What muscles of the hands are innervated by the ulnar nerve

Answer 26

``` Abductor pollicis Abductor digiti minimi Flexor digiti minimi brevis Oppenens digiti minimi 3rd and 4th lumbricals Dorsal interossei muscles Palmar interossei muscles ```

Question 27

What are the rotator cuff muscles

Answer 27

Subscapularis Supraspinatus Infraspinatus Teres minor

Question 28

Insertion and origin of subscapularis

Answer 28

Subscapular fossa - lesser tubercle of humerus

Question 29

Insertion and origin of supraspinatus

Answer 29

Supraspinous fossa - greater tubercle of humerus

Question 30

Insertion and origin of infraspinatous

Answer 30

Infraspinous fossa - greater tubercle of humerus

Question 31

Insertion and origin of teres minor

Answer 31

Lateral border of scapula - greater tubercle of humerus

Question 32

Insertion and origin of deltoid

Answer 32

Lateral clavicle and acromion process - deltoid tuberosity of humerus

Question 33

What are the two parts of the skeleton

Answer 33

Axial | Appendicular