week 3/1 - HAND

Question 1

movements of hand

Answer 1

• medial four digits > abduction and adduction away from middle finger and towards at rest

Question 2

movement of thumb

Answer 2

right angles to this
- flexion across the palm, abduction away from the palm

Question 3

bones of the hand

Answer 3

• carpal
• metacarpals
• phalanges

Question 4

List carpal bones from proximal to distal

Answer 4

• proximal > scaphoid, lunate, triquetral, pisiform
• distal > trapezoid, capitate and hamitate

Question 5

metacarpal

Answer 5

• five > numbered from lateral to medial
  head, shaft and base

Question 6

phalanges

Answer 6

• fourteen
  proximal, middle and distal for the medial 4 digits

Question 7

JOINTS OF THE HAND

Question 8

Intercarpal joints

Answer 8

• synovial, plane

Question 9

carpometacarpal joints 2-5

Answer 9

• synovial plane
  adjustment > little active movement

Question 10

carpometacarpal joint 1

Answer 10

• articulation between the bases of the first metacarpal and trapezium
• synovial saddle joint
• movements > flexion, extension, abduction and adduction

Question 11

metacarpophalangeal 1

Answer 11

• synovial hinge
  movements > flexion, extension

Question 12

proximal interphalangeal joint

Answer 12

flexion, extension and lumbricals

Question 13

interphalangeal joint of thumb

Answer 13

• synovial hinge
• flexion and extension

Question 14

distal interphalangeal joint

Answer 14

• synovial hinge
  collateral and palmar ligaments
  movements : flexion, extension

Question 15

connective and synovial tissue structures

Answer 15

• flexor retinaculum
• extensor retinaculum
• palmar aponeurosis
• fibrous flexor sheath
• dorsal digital (extensor)
• synovial sheaths

Question 16

flexor retinaculum

Answer 16

• Located posterior distal forearm
• attaches to carpal bones, forms the roof of the carpal tunnels
• has thenar and hypothenar muscles attached to it

Question 17

extensor retinaculum

Answer 17

• posterior distal forearm
• attaches to radius and ulna
• limits dorsal movement of the long flexor tendons

Question 18

palmar aponeurosis

Answer 18

• superficial palmer layer of hand
• attached to bone and skin

Question 19

fibrous flexor sheath

Answer 19

• palmer aspect of digits, limits anterior and lateral movements of long flexor tendon of digits

Question 20

extensor dorsal digital

Answer 20

• dorsum of digits, long extensor tendons of the medial four digits
• attach along with the lumbricals and their interossei