Muscles of the Anterior (Flexor-Pronator) Compartment of Forearm

Question 1

What is the flexor retinaculum? What does it do

Answer 1

thickening of deep fascia that converts the carpal arch to the carpal tunnel

holds tendons in place, prevents bowing

Question 2

What passes through the carpal tunnel

Answer 2

flexor tendons and medial nerve

Question 3

The tendons of the forearm muscles pass through the _____ part of the forearm and into the _______

Answer 3

the tendons of the forearm muscles pass through the DISTAL part of the forearm and into the HAND

Question 4

The intermuscular septum divides the forearm into what?

Answer 4

anterior and posterior compartment

Question 5

Most of the the flexor pronator muscles arise from __________ via ________

Answer 5

most of the flexor pronator muscles arise from the MEDIAL EPICONDYLES OF THE HUMERUS via COMMON FLEXOR TENDON

Question 6

the tendons of the most flexor muscles pass across the anterior surface of the wrist and are held in place by what?

Answer 6

flexor retinaculum

Question 7

What are the three layers of the anterior compartment of the forearm

Answer 7

superficial, intermediate and deep

Question 8

What muscles are in the superficial layer of the anterior compartment of the forearm

Answer 8

pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris

Question 9

What nerve(s) are the anterior compartment of the forearm innervated by

Answer 9

All by median nerve except:
flexor carpi ulnaris: ulnar nerve

flexor digitorum profundud: medial half ulnar, lateral half median

Question 10

What is the origin of the pronator teres?

Answer 10

humeral head: medial epicondyle via common flexor tendon

ulnar head: coronoid process of ulna

Question 11

What is the insertion of the pronator teres

Answer 11

middle of the lateral aspect of radius (pronator tubercle)

Question 12

What are the functions of the pronator teres

Answer 12

pronation of forearm @ radioulnar joints

weak flexion of forearm @ elbow joint

Question 13

What nerve innervates the pronator teres

Answer 13

median nerve

Question 14

What is the origin of the flexor carpi radialis

Answer 14

medial epicondyle via common flexor tendon

Question 15

What is the insertion of the flexor carpi radialis

Answer 15

base of 2nd and 3rd metacarpals

Question 16

What are the functions of the flexor carpi radialis

Answer 16

flex of hand @ wrist joint
weak flex of forearm @ elbow joint
radial deviation (AB) of hand @ wrist joint

Question 17

What nerve innervates the flexor carpi radialis

Answer 17

median nerve

Question 18

What is the origin of the palmaris longus

Answer 18

medial epicondyle via common flexor tendon

Question 19

What is the insertion of the palmaris longus

Answer 19

palmar aponeurosis and flexor retinaculum

Question 20

What are the functions of the palmaris longus

Answer 20

flex of hand @ wrist joint

weak flexion of forearm @ elbow joint

Question 21

What is the innervation of the palmaris longus

Answer 21

median nerve

Question 22

What is the palmar aponeurosis

Answer 22

deep fascia of palm

Question 23

What is the origin of the flexor carpi ulnaris

Answer 23

media epicondyle via common flexor tendon

medial side of olecranon

superior posterior border of ulna

Question 24

What is the insertion of the flexor carpi ulnaris

Answer 24

base of 5th metacarpal

hook of hamete

pisiform

Question 25

What are the functions of the flexor carpi ulnaris

Answer 25

flex of hand @ wrist joint
ulnar deviation (ADD) of hand @ wrist joint
weak flex of forearm @ elbow joint

Question 26

What is the innervation of the flexor carpi ulnaris

Answer 26

ulnar nerve

Question 27

Which muscles tendon is the pisiform within?

Answer 27

flexor carpi ulnaris