UB PAS 407 EXAM 1 (ACTION/ MOVEMENT/
INNERVATION/ VASCULARIZATION) QUESTIONS
WITH COMPLETE SOLUTIONS
Abductor pollicis brevis Correct Answers Function: contracts
first digit
Innervation: radial nerve
adductor pollicis Correct Answers Function: adduction of
thumb
Innervation: ulnar nerve
Anconeus Correct Answers Function: extends elbow, tenses
joint capsule to prevent pinching
Innervation: radial nerve
Vascularization: profunda brachial artery
Biceps brachii Correct Answers Function: flexion of shoulder/
elbow joint, strong supinator of superior radioulnar joint
Innervation: musculocutaneous nerve
Vascularization: branches of the brachial artery
Brachialis Correct Answers Function: principal flexor of elbow,
strong flexor at all joint angles
Innervation: musculocutaneous nerve
Vascularization: branches of the brachial artery
Brachioradialis Correct Answers Function: flexes elbow
Innervation: radial nerve
, Coracobrachialis Correct Answers Function: flexes/ adducts/
stabilizes shoulder
Innervation: musculocutaneous nerve
Vascularization: branches of brachial artery
Deltoid Correct Answers Function: Anterior fibers: flex/
stabilize shoulder, Posterior fibers: extend/ stabilize shoulder,
Intermediate fibers abduct at shoulder
Innervation: Axillary nerve
Vascularization: posterior circumflex humeral a.
Dorsal interossei Correct Answers Function: abduct fingers
away from midline (digit 3), flexion/ extension of finger joints
Innervation: ulnar nerve
Erector spinae Correct Answers Function: Unilateral: lateral
flexion and rotation of vertebral column and head
Bilateral: extension of vertebral column and head
Innervation: Dorsal rami of spinal nerves
Extensor carpi radialis brevis Correct Answers Function: wrist
extension, radial deviation
Innervation: radial nerve
Extensor carpi radialis longus Correct Answers Function: wrist
extension, radial deviation
Innervation: radial nerve
Extensor carpi ulnaris Correct Answers Function: wrist
extension, ulnar diviation
Innervation: radial nerve
INNERVATION/ VASCULARIZATION) QUESTIONS
WITH COMPLETE SOLUTIONS
Abductor pollicis brevis Correct Answers Function: contracts
first digit
Innervation: radial nerve
adductor pollicis Correct Answers Function: adduction of
thumb
Innervation: ulnar nerve
Anconeus Correct Answers Function: extends elbow, tenses
joint capsule to prevent pinching
Innervation: radial nerve
Vascularization: profunda brachial artery
Biceps brachii Correct Answers Function: flexion of shoulder/
elbow joint, strong supinator of superior radioulnar joint
Innervation: musculocutaneous nerve
Vascularization: branches of the brachial artery
Brachialis Correct Answers Function: principal flexor of elbow,
strong flexor at all joint angles
Innervation: musculocutaneous nerve
Vascularization: branches of the brachial artery
Brachioradialis Correct Answers Function: flexes elbow
Innervation: radial nerve
, Coracobrachialis Correct Answers Function: flexes/ adducts/
stabilizes shoulder
Innervation: musculocutaneous nerve
Vascularization: branches of brachial artery
Deltoid Correct Answers Function: Anterior fibers: flex/
stabilize shoulder, Posterior fibers: extend/ stabilize shoulder,
Intermediate fibers abduct at shoulder
Innervation: Axillary nerve
Vascularization: posterior circumflex humeral a.
Dorsal interossei Correct Answers Function: abduct fingers
away from midline (digit 3), flexion/ extension of finger joints
Innervation: ulnar nerve
Erector spinae Correct Answers Function: Unilateral: lateral
flexion and rotation of vertebral column and head
Bilateral: extension of vertebral column and head
Innervation: Dorsal rami of spinal nerves
Extensor carpi radialis brevis Correct Answers Function: wrist
extension, radial deviation
Innervation: radial nerve
Extensor carpi radialis longus Correct Answers Function: wrist
extension, radial deviation
Innervation: radial nerve
Extensor carpi ulnaris Correct Answers Function: wrist
extension, ulnar diviation
Innervation: radial nerve
