Forearm - Tunnels of Extensor Side & Cubital Fossa

Question 1

__ tunnels allow (named at wrist from lat to med) allow passage of __ mm ( ___ tendons) to dorsum of hand

Answer 1

6 tunnels

9 muscles

12 tendons

Question 2

Tunnels are held in place by the…

Answer 2

extensor retinaculum

Question 3

Tunnel 1

note: “apples and peanut butter”

Answer 3

Extensor Pollicis Brevis

Abductor Pollicis Longus

Question 4

Tunnel 2

Answer 4

Extensor Carpi Radialis Longus

Extensor Carpi radialis Brevis

Question 5

Tunnel 3

(around dorsal tubercle)

Answer 5

Extensor Pollicis Longus

Question 6

Tunnel 4

Answer 6

Extensor Digitorum

Extensor Indicis

Question 7

Tunnel 5

*** tunnel 5 for digit 5

Answer 7

Extensor Digiti Minimi

Question 8

Tunnel 6

Answer 8

Extensor Carpi Ulnaris

Question 9

Borders of Cubital Fossa

Answer 9

Medial – pronator teres
Lateral – brachioradialis
Superior – imaginary line bw medial and lateral epicondyle
Roof – deep fascia, bicipital aponeurosis, subcutaneous tissue, skin
Floor – brachialis, supinator

Question 10

Contents of Cubital Fossa

***“RNBTBAMN”

Answer 10

Radial n

Bicipital tendon

Brachial artery – (radial and ulnar a begin)

Median nerve

> Basilic, cephalic, median cubital veins

> Med and lat antebrachial cutaneous