Sensory

Question 1

What are the superficial sensations?

Answer 1

• temperature
• light touch
• pain
• pressure
• Get info from the exteroreceptors in skin and subcutaneous

Question 2

What are the deep sensations?

Answer 2

-proprioception
-kinesthesia
-vibration
Get info from muscles, tendons, ligaments, joints, and fascia

Question 3

What are the cortical (combined) sensations?

Answer 3

-bilateral simultaneous stimulation
-stereognosis
-two-point discrimination
-barognosis
-tactile localization
-recognition of textures
Require info from both extero receptors and

Question 4

What does the spinothalamic tract (anterior) do?

Answer 4

Senses light touch and pressure

Question 5

What does the spinothalamic tract (lateral)

Answer 5

Senses pain and temperature

Question 6

What does the dorsal column (medial lemniscal) tract on a whole do?

Answer 6

Discriminative (specific location):

• deep touch
• barognosis
• kinesthesia
• proprioception
• 2 point descrimination
• graphesthesia
• sterognosis

Question 7

What does the spinothalamic tract do as a whole?

Answer 7

Non-discriminative (not specific location) sensations:

• pain
• temperature
• tickle
• itch
• sexual senations

Question 8

What sensory tests test the spinothalamic tract? (not sure if sensory testing truly can tell this?)

Answer 8

• hot and cold
• sharp and dull
• brush test?

Question 9

When does the spinothalamic tract cross over?

Answer 9

-1-2 vertebrae above where the sensation enters the spinal cord, then ascends

Question 10

When does the dorsal tract cross over?

Answer 10

-ascends then crosses in the brain stem

Question 11

What sensory tests test the doral tracts?

Answer 11

• proprioception
• kensthesia
• 2 point discrimination
• stereognosis
• barognosis- perceive the weight of diff objects in hand

Question 12

What sensory tests test the superficial sensations?

Answer 12

• hot/cold
• sharp/dull
• brush test?

Question 13

What sensory tests test the deep sensations?

Answer 13

• proprioceptive- moving toes and fingers up and down, pt identifies static movment
• kinesthesia- moving or not moving limb, direction of movement

Question 14

What aspect of the brachial plexus is involved in thoracic outlet syndrome?

Answer 14

commonly C8 and T1
-see issues in the ulnar nerve distribution
second most common: C5, C6, C7
-see issues in radial nerve n. distribution

Question 15

Where does the anterolateral spinal tract originate?

Answer 15

Skin:

• mechanoreceptors
• thermoreceptors
• nociceptors

Question 16

What is damaged if there is contralateral loss or pain and temperature?

Answer 16

spinothalamic tract

Question 17

What is damaged if there are deficits with discriminate sensations?

Answer 17

Discriminative sensations: two point discrimination, vibration, etc
Dorsal columns (medial lemniscus) damaged

Question 18

What is damaged if there is both sensory and motor issues?

Answer 18

damage to spinal nerve root (remember, dorsal and ventral roots converge to make spinal nerves)

Question 19

What is damaged if severe sensory impairment with diffuse pattern of involvement?

Answer 19

Lesions of the CNS