T2: SENSORY INFORMATION

Question 1

What structure recognizes a stimulus in the internal or external environment of an organism and converts into an AP?

Answer 1

Sensory Receptor

Question 2

T or F. PNS carries sensory (afferent) information to CNS.

Answer 2

True

Question 3

A sense of the relative position of neighboring parts of the body without the use of vision is known as?

Answer 3

Proprioception

Question 4

Define the Romberg’s Test.

Answer 4

A test of proprioception receptors and pathway function

Question 5

Define Exteroception.

Answer 5

Perception of the outside world

Question 6

Define Interoception.

Answer 6

Perception of bodily sensations

Question 7

Information about the internal and external environment reaches the CNS in what form?

Answer 7

AP/Nerve Impulses

Question 8

A decreased CNS response to a repeated stimulus is termed as?

Answer 8

Habituation

Question 9

An increased response to a repeated stimulus is termed as?

Answer 9

Sensitization

Question 10

T or F. ALL unipolar neurons are sensory (afferent) type neurons

Answer 10

True

Question 11

Describe a Peripheral Axon from a Unipolar Neuron.

Answer 11

Associated with a sensory receptor

Question 12

Describe a Central Axon from a Unipolar Neuron.

Answer 12

Enters the CNS

Question 13

When each sensory receptor responds to one particular form of energy, it is termed as?

Answer 13

Adequate Stimulus

Question 14

When a neuron is in the process of sending a nerve impulse, it is termed as?

Answer 14

Firing/Depolarizing

Question 15

Receptors that respond to change are called?

Answer 15

Fast Adapting Receptors

Question 16

Describe Weber’s Law.

Answer 16

Change needed to notice a difference between two stimuli is proportional to the original intensity of the stimulus

Question 17

A defined area in the periphery receiving input is called?

Answer 17

Receptive Field

Question 18

When a stimuli falls out of the Receptive Field, it will be unable to affect the receptor, this area is called?

Answer 18

Receptive Field of the Receptor

Question 19

The ability to locate the site of stimulation and to detect the neighbouring stimuli are separate is called?

Answer 19

Spatial Discrimination

Question 20

Describe Dermatome.

Answer 20

An area of skin with a combination of the receptive field of the sensory axons originating from a single nerve

Question 21

Which spinal nerve supplies the lateral shoulder/arm dermatome?

Answer 21

C5

Question 22

Which spinal nerve supplies the thumb/index finger dermatome?

Answer 22

C6

Question 23

Which spinal nerve supplies the middle finger dermatome?

Answer 23

C7

Question 24

Which spinal nerve supplies the digiti minimi dermatome?

Answer 24

C8

Question 25

Which spinal nerve supplies the medial elbow dermatome?

Answer 25

T1

Question 26

What is the Thoracic Dermatome Key Landmarks for the intercostal nerve?

Answer 26

T2-T12

Question 27

What is the Thoracic Dermatome Key Landmarks going across the umbilicus?

Answer 27

T10

Question 28

What is the Thoracic Dermatome Key Landmarks going across the upper edge of the pubic bone?

Answer 28

T12

Question 29

Where are Cutaneous Receptors found?

Answer 29

Dermis/Epidermis

Question 30

Where are Meissner corpuscles and Merkel cells found?

Answer 30

Superficial layer of glabrous skin (fingertips/lips) - detects discriminative touch

Question 31

What is sensitive to skin stretch. They monitor slippage of objects, allowing modulation of grip

Answer 31

Ruffini Corpusles

Question 32

What detects "deep touch" (pressure), found in the subcutaneous tissue.

Answer 32

Pacinian Corpuscles

Question 33

What are multi-layered capsules with branched nerve endings, helps during the feeling of extreme cold

Answer 33

Bulbs of Krause

Question 34

Unmyelinated terminal branches of the neuron is called?

Answer 34

Naked Nerve Endings

Question 35

Which receptor responds to 'light'?

Answer 35

Photoreceptors

Question 36

Which receptor responds to 'chemical stimuli'?

Answer 36

Chemoreceptors

Question 37

Which receptor responds to 'temperature'?

Answer 37

Thermoreceptors

Question 38

Which receptor responds to 'mechanical stress'?

Answer 38

Mechcanoreceptors