Architecture Of The Hand

Question 1

The hand is a ____ organ; it is an organ with ______; and it is a _________ organ.

Answer 1

motor; specialization; sensory

Question 2

T/F: The hand and brain are an inseparable, interacting functional pair

Answer 2

True

Question 3

The thumb Trapezio-Metacarpal joint is also know as the ____ joint

Answer 3

CMC joint (carpal-metacarpal)

Question 4

The CMC (TMC) joint is a ____ joint

Answer 4

Saddle joint

Question 5

the CMC (TMC) joint as __ degrees of freedom. Name the motions at this joint

Answer 5

two degrees of freedom

motions: flexion/extension; abduction/adduction

Question 6

____ muscles help stabilize the thumb in all planes

Answer 6

Thenar muscles

Question 7

The thumb metacarpophalangeal joint (MP) is a _____ joint

Answer 7

condyloid

Question 8

the thumb MP joint has ___ degrees of freedom. Name the motions at this joint

Answer 8

two degrees of freedom

motions: flexion/extension; abduction/adduction

Question 9

Name the four stabilizing structures of the thumb MP joint

Answer 9

1. volar plate
2. ulnar and radial collateral ligaments
3. Medial sesamoid bone
4. Lateral sesamoid bone

Question 10

This structure allows proximal phalanx to smoothly flex over the metacarpal; when joint is in extension, it is check rein for extension

Answer 10

Volar plate

Question 11

These arise from bone and are made of thickened collagen tissue; they arise from one bone and attach to another bone; strengthen capsule; limit the amount of joint motion

Answer 11

collateral ligaments

Question 12

Thumb MP joint medial sesamoid attachment:

Answer 12

adductor pollicis muscle

Question 13

Thumb MP joint lateral sesamoid attachment:

Answer 13

abductor pollicis and flexor pollicis brevis

Question 14

Thumb Interphalangeal joint (PIP joint) is a ____ joint

Answer 14

Simple hinge joint

Question 15

the thumb PIP joint has __ degrees of freedom. What motions does this joint have?

Answer 15

one degree of freedom

motion: flexion and extension

Question 16

Digits metacarpophalangeal (MP) joint is a ___ joint

Answer 16

condyloid joint

Question 17

Digits MP joint has __ degrees of freedom. Name the motions at this joint.

Answer 17

Two degrees of freedom

Motions: flexion/extension; abduction/adduction

Question 18

Name the five things that stabilize the digit MP joint

Answer 18

1. deep transverse metacarpal ligament
2. volar plate
3. collateral ligaments
4. A-1 pulley
5. Sagittal band fibers of extensor hood

Question 19

This structure is attached to adjacent metacarpals (joint capsule); they border the volar plates; stabilize the relationships of the metacarpals but allows some movement of one metacarpal to another

Answer 19

Deep transverse metacarpal ligament

Question 20

This is what flexor tendons course through on the way to their insertions

Answer 20

A-1 pulley

Question 21

Digit Interphalangeal joints (PIP and DIP) are __ joints

Answer 21

simple hinge joints

Question 22

Digit PIP and DIP joints have __ degrees of freedom. Name the motions at this joint.

Answer 22

One degree of freedom

Motion: flexion and extension

Question 23

Name the two stabilizers of the Digit PIP and DIP joints

Answer 23

1. volar (palmar) plate

2. collateral ligaments

Question 24

The four units of the hand have one ____ ___ unit, and three ___ units that project from the fixed unit

Answer 24

one central fixed unit and three mobile units

Question 25

These help us adapt our hands to the task to be performed

Answer 25

Arches of the hand

Question 26

Name the three arches of the hand

Answer 26

1. Transverse 2. Longitudinal 3. Oblique

Question 27

What provides the blood supply to the hand?

Answer 27

Radial and Ulnar arteries

Question 28

What artery supplies the superficial palmar arch?

Answer 28

ulnar artery

Question 29

What artery supplies the deep palmar arch

Answer 29

radial artery

Question 30

Carry deoxygenated blood to cephalic and basilica veins

Answer 30

veins

Question 31

superficial and deep; structures that absorb excess interstitial fluids and transport them proximally through lymph system

Answer 31

lymphatics

Question 32

Nerve supply to the hand: sensation

Answer 32

Median, ulnar, and radial nerves

Question 33

____ branch of the radial nerve is a sensory nerve only

Answer 33

superficial branch

Question 34

Nerve supply to the hand: motor

Answer 34

median, ulnar, and radial nerves

Question 35

T/F: Having the same therapist always taking the ROM measurements increases the validity of the results.

Answer 35

True

Question 36

T/F: There is a significant difference with ROM measurements between the right and left hands

Answer 36

False- there is no significant difference; can use the opposite side to find "normal" for affected side