Muscles of the Anterior Compartment of the Forearm

Question 0

Insertion of Pronator Teres (PT)

Answer 0

Middle of Convexity of Lateral Surface of the Radius

Question 1

Origin of Pronator Teres (PT)

Answer 1

Ulnar Head: Coronoid Process of Ulna

Humeral Head: Medial Epicondyle of Humerus

Question 2

Innervation of Pronator Teres (PT)

Answer 2

Median Nerve (C6,C7)

Question 3

Action of Pronator Teres (PT)

Answer 3

Flexes and Pronates the forearm

Question 4

Origin of Flexor Carpi Radialis

Answer 4

Medial Epicondyle of Humerus

Question 5

Insertion of Flexor Carpi Radialis

Answer 5

Base of the 2nd Metacarpal

Question 6

Innervation of Flexor Carpi Radialis

Answer 6

Median Nerve (C6,C7)

Question 7

Action of Flexor Carpi Radialis (FCR)

Answer 7

Flexes and ABducts the hand at the wrist

Question 8

Origin of Palmaris Longus

Answer 8

Medial Epicondyle of Humerus

Question 9

Insertion of Palmaris Longus

Answer 9

1)Distal Half of Flexor Retinaculum , 2) Palmar Aponeurosis

Question 10

Innervation of Palmaris Longus

Answer 10

Median Nerve (C7,C8)

Question 11

Action of Palmaris Longus

Answer 11

Flexes hand (at wrist), tenses palmar aponeurosis

Question 12

Origin of Flexor Carpi Ulnaris

Answer 12

Olecranon, Posterior Border of Ulna (via aponeurosis)

Question 13

Insertion of Flexor Carpi Ulnaris

Answer 13

Pisiform, Hook of Hamate, and 5th metacarpal

Question 14

Innervation of Flexor Carpi Ulnaris

Answer 14

Ulnar Nerve (C7, C8)

Question 15

Action of Flexor Carpi Ulnaris

Answer 15

Flex and ADDuct the hand at wrist

Question 16

Which Muscles Make up the Superficial Layer of the Anterior Compartment of Forearm?

Answer 16

Pronator Teres
Flexor Carpi Radialis
Palmaris Longus
Flexor Carpi Ulnaris

Question 17

Which muscle makes up the intermediate layer?

Answer 17

Flexor Digitorum Superficialis

Question 18

Origin of Flexor Digitorum Superficialis

Answer 18

Humero-Ulnar Head: Medial Epicondyle of Humerus and Coronoid Process of Ulna
Radial Head: Oblique Line of Radius

Question 19

Insertion of Flexor Digitorum Superficialis

Answer 19

Shafts (bodies) of middle phalanges of medial four digits

Question 20

Innervation of Flexor Digitorum Superficialis

Answer 20

Median Nerve (C7,C8,T1)

Question 21

Action of Flexor Digitorum Superficialis

Answer 21

1) Flexes Wrist Joint
2) Flexes Proximal Interphalangeal Joints of Medial Four Digits;
3) Acting more strongly, flexes the proximal phalanges at the metacarpophalangeal joints

Question 22

What muscles make up the deep layer of the anterior compartment of the forearm?

Answer 22

Flexor Digitorum Profundus
Flexor Pollicis Longus
Pronator Quadratus

Question 23

Origin of Flexor Digitorum Profundus

Answer 23

Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane

Question 24

Insertion of Flexor Digitorum Profundus

Answer 24

Bases of Distal Phalanges 2, 3, 4, and 5

Question 25

Innervation of Flexor Digitorum Profundus

Answer 25

``` Lateral Part (digits 2 and 3): Median Nerve (C8, T1) Medial Part (digits 4 and 5): Ulnar Nerve (C8, T1) ```

Question 26

Action of Flexor Digitorum Profundus

Answer 26

1) Flexes Wrist Joint | 2) Flex Distal Interphalangeal Joints of Digits 2, 3, 4, and 5; assist in wrist flexion

Question 27

Origin of Flexor Pollicis Longus

Answer 27

Anterior Surface of the Radius and its adjacent interosseous membrane

Question 28

Insertion of Flexor Pollicis Longus

Answer 28

Base of the Distal Phalanx of the thumb

Question 29

Innervation of Flexor Pollicis Longus

Answer 29

Anterior Interosseous Nerve (C8,T1), from median nerve

Question 30

Action of Flexor Pollicis Longus

Answer 30

1) Flexes Wrist | 2) Flexes the metacarpophalangeal and interphalangeal joints of thumb

Question 31

Origin of Pronator Quadratus

Answer 31

Distal 1/4 of Anterior Surface of Ulna

Question 32

Insertion of Pronator Quadratus

Answer 32

Distal 1/4 of anterior surface of Radius

Question 33

Innervation of Pronator Quadratus

Answer 33

Anterior Interosseous Nerve (C8, T1), from median nerve

Question 34

Action of Pronator Quadratus

Answer 34

Pronates the forearm; deep fibers are going to bind radius and ulna