The Forearm and Elbow Flashcards
The forearm consists of the…..
radius & ulna
the distal radial ulnar joint does what motion?
supination & pronation
The radius and ulna are held together by what?
interosseous membrane
The elbow consists of what 3 bones?
1) humerus
2) radius
3) ulna
The elbow joint is what type of joint?
uniaxial
What motion does the elbow allow?
flexion & extension
What muscle inserts on the radial tuberosity?
biceps brachii
The radius is on what side of the arm when in the anatomical position?
LATERAL side
The ulna is on what side of the arm when in the anatomical position?
MEDIAL side
The ulna is what type of bone?
a stable bone
(Musculocutaneous Nerve) the biceps ______ the elbow and ______ the forearm
flexes; supinates
(Musculocutaneous Nerve) the coracobrachialis ______ and ______ the humerus
flexes; abducts
the distal radial nerve innervates……
the finger and thumb
Which nerve doesn’t innervate any muscles of the elbow or forearm?
proximal ulnar nerve
What is the strongest elbow flexor when the palm is pronated?
brachialis
What is the most effective flexor with the forearm in neutral?
brachioradialis
What flexes the elbow and supinates the forearm?
biceps
what holds the radius and the ulna together and stabilizes the joint during supination and pronation movements?
annular ligament
What is the extensor of the elbow?
triceps
What are the pronators of the elbow?
1) pronator teres
2) pronator quadratus
What are the supinators of the elbow?
1) biceps
2) supinator
