Page 5 (Forearm, Hand, & Abdomen)

Question 0

Abductor digiti minimi (hand) - Action and Innervation

No origin or insertion

Answer 0

Action: Abducts 5th digit
Innervation: Ulnar nerve

Question 1

Abductor pollicis brevis - Action and Innervation

No origin or insertion

Answer 1

Action: Abducts thumb
Innervation: Median nerve

Question 2

Flexor pollicis brevis - Action and Innervation

No origin or insertion

Answer 2

Action: Flexes MCP joint of thumb
Innervation: Median nerve

Question 3

Flexor digiti minimi brevis (hand) - Action and Innervation

No origin or insertion

Answer 3

Action: Flexes carpometacarpal and MCP joints of 5th digit
Innervation: Ulnar nerve

Question 4

Opponens digiti minimi - Action and Innervation

No origin or insertion

Answer 4

Action: Opposes 5th digit
Innervation: Ulnar nerve

Question 5

Serratus posterior inferior - Action only

No origin, insertion, or innervation

Answer 5

Pulls down lower ribs

Question 6

Serratus posterior superior - action only

No origin, insertion, or innervation

Answer 6

Elevates upper ribs

Question 7

Rectus abdominis - Insertions (2) and actions (2)

No origin or innervation

Answer 7

Insertion: Xiphoid process and costal cartilage of ribs 5-7
Action: Depresses thoracic cage and flexes torso

Question 8

Adductor pollicis - Action and Innervation

No origin or insertion

Answer 8

Adducts the thumb

Ulnar nerve