Forearm bones and muscles

Question 1

What structure passes through the intertubercular groove?

Answer 1

Long head of biceps

Question 2

Radius is wide at ______ end and narrow at ______

A) distal, proximal
B) proximal, distal
C) distal, distal
D) None of the above

Answer 2

A) wide at distal end and narrow at proximal end

Question 3

Ulna is wide at ______ end and narrow at ______

A) distal, proximal
B) proximal, distal
C) distal, distal
D) None of the above

Answer 3

B) Wide at proximal end, narrow at distal end

Question 4

Styloid process of the radius is at the _____ side whereas it is at the ______ side for the ulna

A) lateral, medial
B) medial, lateral
C) superior, inferior
D) inferior, superior

Answer 4

A) lateral at radius and medial for ulna

Question 5

Head of the radius is at the _____ end whereas head of ulna is at the _____ end.

A) distal, proximal
B) proximal, distal
C) distal, distal
D) None of the above

Answer 5

B) radius- proximal

ulna- distals

Question 6

Biceps attach to _________

A) Head of radius
B) Ulnar tuberosity
C) Radial tuberosity
D) Ulnar head

Answer 6

C) Radial tuberosity

Question 7

Dislocation of the elbow joint can lead to _______ compression, which can lead to ______

A) radial artery, ischaemia
B) ulnar artery, aneurysm
C) brachial artery, ischaemia
D) Median artery, aneurysm

Answer 7

C) brachial artery compression, leading to ischaemia

Question 8

Cubital fossa is between?

Answer 8

Lateral and medial epicondyles, pronator teres, brachioradialis

Question 9

Roof of the cubital fossa is ________ and the floor is _________.

A) biciptal aponeurosis, brachialis m.
B) brachialis m, biciptal aponeurosis
C) pronator teres, brachioradialis
D) brachioradialis, pronator teres

Answer 9

A) biciptal aponeurosis, brachialis m.

Question 10

Cubital fossa contains which vein?

Answer 10

median cubital vein

Question 11

Cubital fossa contains what arteries?

Answer 11

Radial and ulnar

Question 12

cubital fossa contains what nerves?

Answer 12

Cutanoues nerves, medial and radial nerves

Question 13

Muscles of the forearm are supplied by what nerves?

Answer 13

Median, radial, ulnar

Question 14

Common flexor origin has its origin at? What layer of foraream muscles is this?

Answer 14

Superficial muscles layer at the CFO orginate at the medial epicondyle

Question 15

what are the 4 superficial muslces of the anterior flexor compartment?

Answer 15

Pronator teres (index), flexor carpi radialis (middle), palmaris longus (Ring), flexor carpi ulnaris (Pinkey)

Question 16

When bicep works, which muscles of the anterior flexor compartment works as a pronator?

Answer 16

Pronator teres

Question 17

Flexor Carpi ulnaris inserts where?

Answer 17

Carpal bones on ulnar side

Question 18

where does palmar longus insert?

Answer 18

palmar neurosis

Question 19

what are the intermediate muslces of the anterior flexor compartment? Whats its origins and where does it work?

Answer 19

flexor digitorum superficialis. arises from CFO, and works on digits

Question 20

Tendons of the flexor digitorum superficialis go deep into the _______

A) bicipital aponeurosis
B) flexor retinaculum
C) cubital fossa
D) None of the above

Answer 20

B) flexor retinaculum

Question 21

what are the 3 deep layer muslces of the anterior flexor compartment?

Answer 21

flexor pollicis longus, flexor digitorum profundus, pronator quadratus

Question 22

T/F- Flexor digitorum profundus splits into 4 tendons

Answer 22

True

Question 23

Where does pronator quadratus originate and insert?

Answer 23

starts from ulna and insert on radius

Question 24

what muscles of the forearm pronate forearm?

Answer 24

pronator teres, pronator quadratus

Question 25

What are the superficial layer muscles of the posterior extensor compartment. Where do most of these arise from?

Answer 25

brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorium communis, extensor digiti minimi, extensor carpi ulnaris, anconeous------- most arise from CEO

Question 26

What are the deep layer muscles of the posterior extensor compartment. Where do most of these arise from?

Answer 26

supinator, abductor pollicus longus, extensor pollicis brevis, extensor pollicis longus, extensor indicis.--- most arise from ulna, radius and interosseous membrane

Question 27

Extensor carpi radialis longus inserts to ______

Answer 27

2nd metacarpal

Question 28

Extensor digitorum communis and extensor digiti minimi insert to the _______

Answer 28

little finger