A&P II Forearm and Hand MG 1
Terms
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- which muscle is a strong elbow flexor located deep to the biceps brachii
- brachialis
- the brachioradialis creates a helpful dividing line between which two muscle groups
- flexors, extensors
- which muscle runs the length of the forearm but does not cross the wrist joint
- brachioradialis
- the pronator quadratus is deep to the __ tendons and is accessible only on the quadratus' __ portion
- flexor, lateral
- the __ muscle is an antagonist to both the biceps brachii and supinator
- pronator teres
- palpating medial to the distal tendon of which muscle can help you locate the pronator teres
- biceps brachii
- to access the supinator you must palpate deep to which muscle
- extensors
- passive pronation of the forearm would __ the supinator
- len
- passive flexion of the elbow would __ the brachioradialis
- sho
- passive extension of the elbow would __ the brachialis
- len
- passive pronation of the forearm would __ the pronator teres
- sho
- Origin of brachialis
- distal half of anterior surface of humerus
- Insertion of brachialis
- tuberosity and coronoid process of ulna
- Action of brachialis
- flex the elbow (humeroulnar joint)
- Origin of brachioradialis
- lateral supracondylar ridge of humerus
- Insertion of brachioradialis
- styloid process of radius
- Action of brachioradialis
- flex the elbow(humeroulnar joint); assist to pronate and supinate the forearm when these movements are resisted
- Origin of pronator teres
- medial epicondyle of the humerus, common flexor tendon and coronoid process of the ulna
- Insertion of pronator teres
- middle of lateral surface of the radius
- Action of pronator teres
- pronate the forearm (radioulnar joints); assist to flex the elbow (humeroulnar joint)
- Origin of pronator quadratus
- medial , anterior surface of distal ulna
- Insertion of pronator quadratus
- lateral, anterior surface of distal radius
- Action of pronator quadratus
- pronate the forearm (radioulnar joint)
- Origin of supinator
- radial collateral ligament, annular ligament and the supinator crest of the ulna
- Insertion of supinator
- lateral surface of proximal shaft of the radius
- Action of supinator
- supinate the forearm (radioulnar joints)