The Hand Flashcards
What is the order of bones from lateral to medial (in the anatomical position) of the first row of carpal bones?
Scaphoid
Lunate
Triquetrium
Pisiform
What is the order of bones from lateral to medial (in the anatomical position) of the second row of carpal bones?
Trapezium
Trapezoid
Capitate
Hamate
What is the number order of the metacarpal bones from thumb to pinky?
1-5
Do all digits have the same number of phalanges?
No - the thumb lacks a middle phalanx
The pisiform, hook of hamate, tubercle of trapezium and tubercle of scaphoid all sit on which side of the hand?
Ventral
What type fo synovial joint is the radiocarpal joint?
Comdyloid
What forms the roof of the carpal tunnel?
Flexor retinaculum
Which nerve travels through the carpal tunnel?
Median nerve
Which ligament ties together the 2nd-5th metacarpals to prevent them from fanning out?
Deep transverse metacarpal ligament
What kind of synovial joint exists between the carpal and metacarpal bones?
Plane joint
What kind of synovial joint exists between the trapezium and first metacarpal?
Saddle joint
What kind of synovial joint is the metarcapal-phalanges joint?
Condyloid joint
What kind of synovial joint is the inter-phalangeal joints?
Hinge joints
Which ligament of the thumb is particularly important in the pinch grip?
Ulnar collateral ligament
Which tendons run through the carpal tunnel?
4 tendons of Flexor digitorum superficialis
4 tendons of flexor digitorum produndus
Tendon of flexor pollicis longus
Which nerve is responsible for thumb opposition?
Median nerve
What structures are transmitted by the guyon tunnel?
Ulnar nerve and artery
Which nerve is responsible for thumb abduction?
Ulnar nerve
Which artery sits in the anatomical snuffbox?
Radial artery
Which tendons comprise the anatomical sunffbox?
Extensor pollicis longus
Extensor pollicis brevis
Anductor pollicus brevis
The thenar muscle sits on the medial aspect of the hand and the hypothenar muscle on the lateral aspect. T/f?
False the opposite is true
Which nerve principally supplies the thenar eminence?
Median nerve
Which nerve principally supplies the hypothenar eminence?
Ulnar nerve
What is the function of the lumbricals?
To modify the action of thr flexors of the hand
Which movement is allowed by the simultaneous action fo the lumbricals and dorsal interossei?
Simultaneous extension of the interphalangeal joints and flexion of the metacarpal phalangeal joints
Which nerve supplies the sensory function of the pinky and half of the ring finger?
Ulnar nerve
Which nerve supplies sensory function to the palmar aspect of the thumb, index finger, middle finger and half of the ring finger and the tips of the dorsal aspect of the ring, index and middle fingers?
Median nerve
Which nerve provides sensory function to the dorsal aspect of the thumb, index finger and middle finger?
Radial nerve
Which artery forms the superficial palmar arch of the hand?
Ulnar artery
Which artery passes dorsal to the first metacarpal and loops around it to appear deep on the palm side to feed to deep palmar arch of the hand?
Radial artery
The cephalic and basilic veins are superficial veins of the hand, forearm and arm. Which deep veins do these drain to?
Cephalic vein drains to subclavian vein
Basilic vein drains to axillary vein
