Muscles and Action of the Forearm, Wrist and Fingers Test

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How many of the muscles of the thumb are located at the thenar eminence?

4--short

How many muscles act upon the thumb?

8

Which of the following is an action of the extensor indicis?

Adduct the second finger

Which of the following muscles act as antagonists to the brachialis during elbow flexion?

Anconeus

Which muscle is a synergist to the supinator during forearm supination?

Biceps brachii

Which muscle is a strong elbow flexor located deep to the biceps brachii?

Brachialis

Which muscle creates a helpful diving line between the flexors and extensors of the wrist and hand?

Brachioradialis

Which muscle runs the length of the forearm but does not cross the wrist joint?

Brachioradialis

Which is the origin of the brachialis?

Distal half of anterior surface of humerus

What movement will lengthen the fibers of brachialis?

Extension of the elbow

Which muscle's primary task is extension of the second, or "index", finger?

Extensor indicis

Which of the following is an action of the brachia's?

Flex the elbow

Which of the following is an action of the brachioradialis?

Flex the elbow

flexor digitorum superficialis

G

antebrachial fascia

H

Which is the insertion of the pronator teres?

Middle of lateral surface of radius

Which is the origin of the extensor indicis?

Posterior surface of distal shaft of ulna and interosseous membrane

Which of the following is an action of the pronator quadratus?

Pronate the forearm

Which muscle is an antagonist to both the biceps brachii and supinator?

Pronator teres

Which is the origin of the brachioradialis?

Proximal two-thirds of the lateral supracondylar ridge of humerus

Which is the insertion of the extensor indicis?

Tendon of the extensor digitorum at the level of the second metacarpal

Which is the insertion of the brachialis?

Tuberosity and coronoid process of ulna

Which muscle is located between the pisiform and the base of the fifth finger?

abductor digiti minimi

Which of the following is an action of the pronator teres?

assist to flex the elbow

Which is a portion of the origin of the pronator teres?

common flexor tendon

Which movement shortens the fibers of the brachioradialis?

flexion of the elbow

Which is the insertion of the pronator quadrates?

lateral, anterior surface of distal radius

Which is the origin of the pronator quadrates?

medial, anterior surface of distal ulna

Which muscle is primarily responsible for creating opposition of the thumb?

opponens pollicis

Which muscle is a synergist to pronator teres?

pronator quadratus

Which is the insertion of the brachioradialis?

styloid process of radius


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