10: Anterior Forearm

Question 1

What is the superficial group of the anterior forearm?

Answer 1

1. Pronator Teres
2. Flexor Carpi Radialis
3. Palmaris Longus
4. Flexor Carpi Ulnaris

Question 2

What is the intermediate group of the anterior forearm?

Answer 2

flexor digitorum superficialis

Question 3

What is the deep group of the anterior forearm?

Answer 3

1. Flexor Pollicis Longus
2. Flexor Digitorum Profundus
3. Pronator Quardratus

Question 4

bones general names from wrist to tips

Answer 4

1. carpals
2. metacarpals
3. phalanges

Question 5

what is the origin of all 4 mucles in superficial forearm

Answer 5

medial epicondyle of the humerus also known as common flexor origin

Question 6

attachment of Pronator Teres

Answer 6

Radius: middle 1/3

Question 7

attachment of Flexor Carpi Radialis

Answer 7

base of the 2nd metacarpal

Question 8

attachment of Palmaris Longus

Answer 8

palmar aponeurosis

Question 9

attachment of Flexor Carpi Ulnaris

Answer 9

base of the 5th metacarpal

Question 10

actions of the superficial layer

Answer 10

-flexion at every joint proximal to insertion
-abduction / adduction at wrist
-pronation of forearm

Question 11

what is the origin of Flexor Digitorum Superficialis?

Answer 11

medial epicondyle of humerus, ulna + radius

Question 12

what is the insertion of Flexor Digitorum Superficialis?

Answer 12

middle phalanges of digits 2-5 (splits on each side of finger)

Question 13

What is the action of Flexor Digitorum Superficialis?

Answer 13

flexion at every joint proximal to insertion

Question 14

what is the origin of flexor digitorum profundus?

Answer 14

ulna and interosseous membrane

Question 15

what is the origin of flexor pollicis longus?

Answer 15

radius and interosseous membrane

Question 16

what is the origin of pronator quadrus?

Answer 16

distal ulna

Question 17

what is the insertion of pronator quadrus?

Answer 17

distal radius

Question 18

what is the insertion of flexor digitorum profundus?

Answer 18

distal phalanges of digits 2-5

Question 19

what is the insertion of flexor pollicis longus?

Answer 19

distal phalanges of digit 1

Question 20

actions of the deep layer of the anterior forearm

Answer 20

flexion at every joint proximal to insertion

Question 21

what nerve innervates all muscles of the anterior compartment of the forearm?

Answer 21

medial nerve

Question 22

what is the anterior forearm inervation exception

Answer 22

the ulnar nerve inverates flexor carpi ulnaris and 1/2 of flecor digitorum profundus

Question 23

how many muscles does the median nerve innervate in the anterior forearm?

Answer 23

6.5

Question 24

how many muscles does the ulnar nerve innervate in the anterior forearm?

Answer 24

1.5

Question 25

what is the superior boundaries of the cubital fossa?

Answer 25

imaginary line between medial / lateral epicondyles of humerus

Question 26

what is the medial boundaries of the cubital fossa?

Answer 26

pronator teres

Question 27

what is the lateral boundaries of the cubital fossa?

Answer 27

brachioradialis

Question 28

what is the floor boundaries of the cubital fossa?

Answer 28

brachialis and supinator mucles

Question 29

what are the 2 nerves and 2 arterys in the cubital fossa

Answer 29

radial nerve, median nerve, bifurcation of brachial artery

Question 30

what are the 2 branches of the radial nerve

Answer 30

deep branch: pierces supinator to gain access to posterior forearm region
superficial branch: cutaneous sensation from posterior hand

Question 31

what muscles does the proximal branch of the median nerve supply?

Answer 31

superfiical and intermediate: PT,FCR,PL,FDS

Question 32

what muscles does the distal branch of the median nerve supply?

Answer 32

deep distals : 1/2 FDP, RPL, PQ