Unit 1: Lecture 14 Flashcards
Muscles of forearm surrounded by…
antebrachial fascia, which is continuous with the brachial fascia
In general, the radial artery supplies the _________ of the __________ compartment, while the ulnar artery supplies most of the _________ compartment
radial; extensor; flexor
Generally, the functions of the forearm are:
- pronation/supination
- flex/extend wrist & digits
- assist in flexion of elbow
Flexor compartment of forearm (8; SUPERFICIAL group marked with ***)
Pronation
- Pronator Teres (median n.)*
- Pronator quadratus (anterior interosseous n.)
Flex the wrist
- Flexor carpi radialis (median n.)*
- Flexor carpi ulnaris (ulnar n.)*
- Palmaris longus (median n.)*
Flex the digits
- Flexor digitorum superficialis (median)***
- Flexor digitorum profundus (anterior interosseous n.)
- Flexor pollicis longus (anterior interosseous n.)
Extensor compartment of forearm - extrinsic (7; SUPERFICIAL group marked with ***)
Supination
- Supinator (deep radial n.)
- Brachioradialis (radial n.) **
Extend the wrist
- Extensor carpi radialis longus/brevis (radial/deep radial n.) **
- Extensor carpi ulnaris (deep radial n.) **
Extend the digits
- Extensor digitorum (deep radial n.) **
- Extensor digiti minimi (deep radial n.) ***
- Extensor indicis (deep radial n.)
Hand EXtrinsic muscles (extend and radially abduct thumb; deep radial nerve)
- Abductor pollicis longus
- Extensor pollicis brevis
- Extensor pollicis longus
What are the boundaries for the anatomical “snuff box?”
- Abductor pollicis longus (laterally)
- Extensor pollicis brevis
- Extensor pollicis longus (medially)
What’s contained within the “snuff box?”
- Radial Artery
- Superficial radial nerve
- Cephalic vein
The Lateral Antebrachial cutaneous nerve is a continuation of…
Musculocutaneous nerve
Posterior Antebrachial cutaneous nerve is a continuation of…
Radial nerve
Medial Antebrachial cutaneous nerve is a branch of…
Medial cord
