Muscles Of The Hand Flashcards
What is the primary function of the muscles of the hand?
To facilitate movement and dexterity of the fingers and thumb.
Which muscle group is responsible for the opposition of the thumb?
The opponens pollicis muscle.
True or False: The intrinsic muscles of the hand include the thenar and hypothenar muscles.
True
Fill in the blank: The ____ muscles are located in the palm of the hand and help with fine motor skills.
intrinsic
Which muscle is primarily responsible for flexing the fingers?
The flexor digitorum superficialis.
What are the two main groups of muscles in the hand?
Intrinsic muscles and extrinsic muscles.
Multiple choice: Which muscle is NOT part of the thenar eminence? A) Abductor pollicis brevis B) Flexor pollicis longus C) Opponens pollicis
B) Flexor pollicis longus
What is the role of the lumbrical muscles?
To flex the metacarpophalangeal joints and extend the interphalangeal joints.
True or False: The adductor pollicis muscle is responsible for moving the thumb away from the palm.
False
Fill in the blank: The ____ muscles are responsible for the abduction of the fingers.
dorsal interossei
What is the main action of the palmaris brevis muscle?
To help improve grip by tightening the skin over the palm.
Multiple choice: Which of the following muscles is mainly responsible for extending the fingers? A) Extensor digitorum B) Flexor digitorum profundus C) Opponens pollicis
A) Extensor digitorum
What is the primary function of the hypothenar muscles?
To control the movements of the little finger.
True or False: The flexor pollicis brevis has two heads: superficial and deep.
True
Fill in the blank: The ____ interossei muscles are responsible for adduction of the fingers.
palmar
What is the anatomical location of the intrinsic muscles of the hand?
Within the palm of the hand.
Which muscle is responsible for extending the thumb?
The extensor pollicis longus.
Multiple choice: Which muscle assists in gripping and pinching movements? A) Abductor digiti minimi B) Extensor indicis C) Flexor carpi radialis
A) Abductor digiti minimi
What nerve primarily innervates the thenar muscles?
The median nerve.
True or False: The extensor hood mechanism is involved in finger extension.
True
Fill in the blank: The ____ muscle is essential for the opposition of the little finger.
opponens digiti minimi
What is the primary role of the flexor digitorum profundus?
To flex the distal phalanges of the fingers.
Multiple choice: Which muscle is NOT innervated by the ulnar nerve? A) Flexor digitorum profundus B) Dorsal interossei C) Opponens pollicis
C) Opponens pollicis
What is the function of the palmar aponeurosis?
To provide support and protection to the underlying structures of the palm.
