Week 9: Sensations

Question 1

Area of the skin innervated by the sensory axons within each nerve root

Answer 1

dermatome

Question 2

group of muscles that a single spinal nerve root innervates

Answer 2

myotomes

Question 3

This nerve innervation provides sensation to half of the 4th and the entire 5th finger; also it is important in muscles in the forearm and hand that allow for wrist and finger flexion

Answer 3

Ulnar N.

Question 4

This nerve innervation provides sensation go the thumb and 1-4 fingers; it also is important to the muscles of the forearm and hand that allow for a pincer grasp

Answer 4

Median N.

Question 5

This nerve innervation provides sensation to a portion of the skin on the back of the hand; also, it is important to the arm and forearm muscles that extend the elbow, wrist, and finger

Answer 5

Radial N

Question 6

This nerve is made from the posterior cord of the brachial plexus

Answer 6

Radial N.

Question 7

This nerve is made from the medial and lateral cords of the brachial plexus

Answer 7

Medial N.

Question 8

This nerve is made from the medial cord of the brachial plexus

Answer 8

Ulnar N.

Question 9

This occurs when the thumb applies counter to maintain and stabilize a movement

Answer 9

Grasp

Question 10

This is used for accurate or refined movement for manipulation; it usually occurs between flexor surface of 1 or more fingers and thumb

Answer 10

Pinch

Question 11

This grip is used for grasp rather than manipulation

Answer 11

Power Grip

Question 12

This grip is used for manipulation rather than grasp

Answer 12

Precision Grip

Question 13

In this grip, only the flexed fingers are used, thumb not involved

Answer 13

Hook Grip

[FDS and FDP]

Question 14

In this grip, grasps objects that are cylindrical in shape or large enough that the thumb does not touch the fingers

Answer 14

Cylindrical Grip

[FDS, FDP, PI and DI, FPL and FPB, AP, OP]

Question 15

In this grip, fingers and thumb adduct onto the object

Answer 15

Spherical grip

[PI and DI, FDP and FDS, ED, OP, FPL and FPB, AP]

Question 16

In this grip, skin of the palmar surface of the fingers and the palm curve around the handle and the thumb lies in opposition over the finger tips

Answer 16

Fist grip

[FDS and FDP, AP/OP]

Question 17

In this grip, MCP joints of fingers are flexed with IP joints extended; thumb is opposed across the palmar surface of the fingers

Answer 17

Lumbrical grip

Question 18

In this grip, all joints of the index finger are flexed and finger tip is brought into contact with the tip of the abducted thumb.

Answer 18

2 point pinch

[FDS and FDP, AP, FPB and FPL]

Question 19

In this grip, all joints of the index and long fingers are flexed and the finger tips are brought into contact with the tip of the abducted thumb.

Answer 19

3 point pinch

[FDS, maybe FDP, Interossei, AP, FPB, FPL]

Question 20

In this grip, extended thumb is held on the radial side of the index finger

Answer 20

Lateral pinch

[FDP, FDS, First Dorsal Interossei, FPL, FPB, AP]

Question 21

This type of pinch is the least precise

Answer 21

lateral pinch

Question 22

What is the general resting hand position for splinting?

Answer 22

about 20* wrist extension
fingers slightly flexed
thumb slightly opposed and fwd

Question 23

5 indications for splinting?

Answer 23

1. edema
2. bone/joint alignment
3. tendon/ligament disruption
4. muscle weakness
5. surgical protection

Question 24

4 main purposed for splinting?

Answer 24

1. assist for hand position or movement
2. protection
3. support (immobilization and mobilization)
4. pain management