Forearm and Dorsum of Hand Flashcards
bones of the forearm
ulna
radius
ulna bone articulations
articulates with humerus via the olecranon and coronoid process and radius via the radial notch
Distal end is the styloid process.
radius bone articulatoins
Proximal end: head, neck, and tuberosity
The head of the radiusarticulates with the:
Capitulum of the humerus
Radial notch of the ulna
Thedistal part of the radius is thestyloid process
whats is the fibroud interosseous membrane
courses between the radius and ulna
palpable bones of the forearm
styloid process of radius
head and styloid process of ulna
head of radius
what is the subital fossa
Triangular area on the anterior surface of the elbow
whats the medial border of cubital fossa
pronator teres
whats the lateral border of cubital fossa
brachioradialis
whats the superior border of cubital fossa
an imaginary lines between lateral and medial epicondyls
contents of cubtital fossa
biceps tendon
biceps artery
median nerve
brachial veins
arteries of the forearm
bifurcation of the brachial a.
ulnar a.
radial a.
ulnar artery
palpated on lateral side of the flexor carpi ulnaris (FCU) tendond
gived the common interosseous artery
teres major is the transition site of the axillary artery into the
brachial artery
median nerve sensory distribution
lateral aspect of palm of hand and lateral 3.5 digits
tips of lateral 3 fingers on dorsum of hand
median nerve motor suppy
most anterior forearm muscles
most thenar muscles in the hand
lumbricals 1 and 2
ulnar nerve motor supply
flexor carpi ulnaris,
medial 1.5 of flexor digitorum profundus,
hypothenar muscles,
all intrinsic hand muscles except those innervated by median nerve
ulnar nerve sensory distribution
medial aspect of palm and dorsum of hand,
palmar and dorsal aspects of 1.5 digits
radial nerve supplies
the extensor (posterior) comparment
the radial nerve emerges in the forearm by
traveling between the brachialis and brachioradialis
branches of radial nerve
deep (motor) and superficial (sensory) branches
T or F injury to the radial nerve is uncommon
T
the lateral epicondyle is the common origin for
extensor muscles
the medial epicondyle is the common origin for
flexor muscles
what separates the flexors from the extensors
the radius and ulna along with the interosseous membrane
interphalangeal joints (IP)
hinge joints (synovial)
proximal (PIP)
distal (DIP)
movements of the wrist
flexion
extension
abduction (radial deviation)
adduction (ulnar deviatio)
pronation
supination
abduction (radial deviatoin) of the wrist involves
syngerists activity of the flexor carpi radialis and the extensor carpi radialis brevis and longus
adduction (ulnar deviation) of the wrist involves
syngeristic activity of the flexor carpi ullnaris and the extensor carpi ulnaris
movements of the fingers
hyperextension
extension
flexion
Superficial anterior forearm muscles
flexor carpi radialis
flexor carpi ulnaris
pronator teres
palmaris longus
intermediate ant. forearm muscles
flexor digitorum superficialis (flexes at wrist, MCP, PIP)`
deep ant. forearm muscles
flexor digitorum profundus
flexor pollicis longus
prontator quadratus
superior posterior forearm muscles
extensor carpi radialis (brevis and longus)
extensor carpi unlaris
brachioradialis
extensor digitorum
extensor digiti minimi
deep posterior forearm muscles
supinator
extensor indicis
abductor pollicis longus
extensor pollicis longus
extensor pollicis brevis
nerve in carpal tunnel
median nerve is compressed causing tingling or diminshed/loss of sensation in lateral 3.5 digits
dorsum of the hand muscles
dorsal interossei muscles
radial fossa contents
radial artery
medial border of radial fossa
extensor pollicis longus
lateral border of radial fossa
extensor pollicis brevis and abductor pollicis longus
T or F radial nerve in the hand does not supply any hand muscles
T
The superficial branch of the radial nerve is enitrely sensory or motor
sensory
