26 Questions
Which nerve supplies the Abductor pollicis brevis muscle?
Median nerve
What is the origin of the Flexor pollicis brevis muscle?
Flexor retinaculum and trapezium
Which of the following is NOT a thenar muscle?
Abductor digiti minimi
Which compartment of the hand contains the lumbrical muscles?
Central compartment
Which artery supplies the superficial palmar arterial arch?
Ulnar artery
Which muscle is responsible for extending the index finger?
Extensor indicis proprius
Which compartment of the hand contains the Opponens pollicis muscle?
Thenar compartment
Which nerve supplies the palmar aspect of the thumb?
Median nerve
Which muscle is responsible for abducting the thumb?
Abductor pollicis brevis
Which nerve supplies the hypothenar muscles?
Ulnar nerve
Which muscle originates from the pisiform bone and inserts into the medial side of the proximal phalanx of the 5th digit?
Abductor digiti minimi
What is the origin of the Opponens digiti minimi muscle?
Hamate & flexor retinaculum
Which muscle is innervated by the median nerve among the intrinsic muscles of the hand?
Opponens pollicis
What is the primary function of the Lumbrical muscles in the hand?
Flex MCP joints & extend IP joints
From where do the Palmar interosseous muscles originate?
2nd, 4th, and 5th metacarpal bones
Which intrinsic hand muscle has the unique feature of originating from the body of the 3rd metacarpal bone?
Adductor pollicis muscle
Which muscle is responsible for the extension of the second, third, and fourth digits?
Dorsal interosseous muscle
What structure forms the roof of the carpal tunnel?
Flexor retinaculum
Which structure passes superficial to the flexor retinaculum?
Palmar cutaneous branch of the median nerve
What is the cause of carpal tunnel syndrome?
Both inflammation of the flexor retinaculum and anterior dislocation of the lunate bone
Which nerve provides sensory innervation to the palmar surface of the hand?
Median nerve
Which artery forms the deep palmar arch?
Radial artery and deep branch of the ulnar artery
Which artery supplies blood to the dorsum of the hand?
Radial artery
What type of joint is the wrist joint (radiocarpal joint)?
Condyloid joint
Which joint of the hand is a saddle joint?
Carpometacarpal joint of the thumb
What type of movement is possible at the metacarpophalangeal joints?
All of the above
Learn about the origin and insertion points of the dorsal interosseous muscle, as well as the structures passing superficial to the flexor retinaculum. Understand the anatomy of the carpal tunnel and its components.
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