Muscles of the Antebrachium - Lateral Humerus

Question 1

Name the Origin, Insertion, Action, and Nerve for:

Brachioradialis

Answer 1

O: Lateral Supracondylar Ridge humerus

I: Styloid Process radius

A: Flex elbow, Prontate/Supinate - RU

N: Radial N

Question 2

Name the Origin, Insertion, Action, and Nerve for:

Extensor Carpi Radialis Longus

Answer 2

O: Lateral Supracondylar Ridge of humerus

I: Base 2nd MC

A: Ext, Radial Deviate - wrist, (Flex - elbow)

N: Deep Radial N

Question 3

Name the Origin, Insertion, Action, and Nerve for:

Extensor Carpi Radialis Brevis

Answer 3

O: Lateral Epicondyle of Humerus

I: Base 3rd MC

A: Ext, Radial Deviate - wrist, (Flex - elbow)

N: Deep Radial N

Question 4

Name the Origin, Insertion, Action, and Nerve for:

Supinator

Answer 4

O: Lateral Epiocondyle humerus & Supinator Crest of Ulna

I: Lateral Radius

A: Supinate RU

N: Deep Radial N

Question 5

Name the Origin, Insertion, Action, and Nerve for:

Extensor Digitorum

Answer 5

O: Lateral Epicondyle of Humerus

I: Middle & Distal phalanges 2-5

A: Ext, (ABD) MCP/IPs 2-5
Ext - wrist

N: Posterior Interosseous N

Question 6

Name the Origin, Insertion, Action, and Nerve for:

Extensor Digiti Minimi

Answer 6

O: Lateral Epicondyle of Humerus

I: 5th MP/DP

A: Ext (Abd) 5th MCP-DIP
Ext, Ulnar Deviate - Wrist

N: Posterior Interosseous N

Question 7

Name the Origin, Insertion, Action, and Nerve for:

Extensor Carpi Ulnaris

Answer 7

O: Lateral Epicondyle Humerus & Post. Ulna

I: Base 5th MC

A: Ext, Ulnar Deviate - Wrist

N: Posterior Interosseous N