Hand

Question 1

Name the Carpal Bones
From Lateral to medial proximal to distal

Answer 1

Scaphoid
Lunate
Triquetrial
Pisiform
Trapezium
Trapezoid
Capitate
Hamate

Question 2

Describe the bones that make up the hand and name them

Answer 2

27 bones in the hand
2 rows of 4 carpal bones
5 metacarpals 1 is thumb 5 is pinkie
3 phalanges for each 2 on the thumb

Question 3

Name all the joints in the hand

Answer 3

Intercarpal
Midcarapal
Carpometacarpal
Metacaraplphalangeal
Proximal and distal interphalngeal joints in 2-5 1 in 1

Question 4

Classify and describe actions of the intercarpal joints

Answer 4

• Synovial plane joint, minimal movement

Question 5

Classify and describe actions of midcarpal joint

Answer 5

Aids in Flexion/extension Radial and Ulnar deviation
Synovial Plane Joint

Question 6

Classify and describe actions of 2nd to 5th Carpometacarpal Joint

Answer 6

Syovial plpane joints
Aids in flex/ext radial/ulnar dev

Question 7

Classify and describe actions of 1st carpometacarpal joiint

Answer 7

syovial saddle joint
- allows for opposable movement
- flexion extension occur in forntal
-add/abd occur in sagittal
-Opposition

Question 8

Classify and describe actions of Metacarpophalangeal joints

Answer 8

• Synovial ellipsoid joint
• Allows for flexion and extension adn adduction and abduction
• 2 degrees of freedom
• supported by collateral and palmar ligaments

Question 9

Interphlangeal joint

Answer 9

1 degree of freedom
Synovial hinge
Flexion extension
supported by collateral and palmar ligaments

Question 10

What are the Thenar muscles

Answer 10

• they form the fleshy part at the base of the thumb called the thenar eminence
  -adductor pollicis brevis
  -flexor pollicis brevis
  -opponens pollicis

Question 11

What are the hypothenar muscles

Answer 11

• Located at the base of the little finger, this is the hypothenar eminence.
• abductor digiti minimi
• flexor digiti minimi
• opponens digiti minimi

Question 12

What are the metacarpal muscles

Answer 12

Lumbricals - flex at the MCP joints and extend at the interphalngeal
Dorsal interossei - abduct and assist in flexion and extension
Palmar, interossei - adduction and flexion of 2,4,5

Question 13

What is the flexor and extensor retinaculum

Answer 13

Prevents bowstrining of the flexor and extensor muscless tendons.
The Flexor retinaclum forms the roof of the carpal tunnel