Muscles of the Hand and Arm

What is the primary function of the Supinator Radii Brevis muscle?

• Flexes the wrist

• Rotates the forearm so the palm faces upward

• Extends the elbow

• Abducts the fingers

Where does the Supinator Radii Brevis muscle originate?

• Medial epicondyle of the humerus

• Lateral epicondyle of the humerus

• Base of the second metacarpal

• Upper part of the ulna

Which bone does the Supinator Radii Brevis muscle wrap around?

• Ulna

• Humerus

• Radius

• Scapula

What is the main action of the Flexor Carpi Radialis muscle?

• Extends the wrist

• Flexes and abducts the wrist

• Rotates the forearm

• Flexes the elbow

Where does the Flexor Carpi Radialis muscle insert?

• Base of the first metacarpal

• Base of the second and third metacarpals

• Lateral epicondyle of the humerus

• Upper part of the radius

Which muscle helps stabilize the forearm during twisting motions?

• Flexor Carpi Radialis

• Supinator Radii Brevis

• Biceps Brachii

• Triceps Brachii

What is the location of the Flexor Carpi Radialis muscle?

• Back (posterior) side of the forearm

• Front (anterior) side of the forearm

• Upper arm

• Shoulder

Which muscle originates from the medial epicondyle of the humerus?

• Supinator Radii Brevis

• Flexor Carpi Radialis

• Extensor Carpi Ulnaris

• Brachialis

What movement is associated with the Supinator Radii Brevis muscle?

• Pronation of the forearm

• Supination of the forearm

• Flexion of the wrist

• Extension of the elbow

Which muscle provides stability during gripping movements?

• Supinator Radii Brevis

• Flexor Carpi Radialis

• Extensor Digitorum

• Pronator Teres