Sensory, motor, and integrative system Flashcards Preview

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Flashcards in Sensory, motor, and integrative system Deck (89)
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1

What is sensation?

Conscious or unconscious awareness of any stimulus

2

What is perception?

Conscious awareness and interpretations of the meaning of a sensation

3

Define sensory modality.

sensory modality, is one aspect of a stimulus or what we perceive after a stimulus. For example the temperature modality is registered after heat or cold stimulate a receptor.

4

How many stimuluses does a receptor respond to?

only one!!!

5

What are the classifications of senses?

general
special

6

What 4 kinds of general sense receptors are found through out the body?

touch
vibration
temperature
pain

7

What kind of receptors are found in muscles and joints?

proprioceptors

8

Define special senses.

receptors found in specialized organs that respond to specific stimuli
all found in the head

9

What are the 5 kinds of special senses?

taste
hearing
vision
smell
equilibrium

10

How can we classify receptors?

structure
location
nature of stimulus

11

What are the 3 structural classifications of receptors?

1. Free nerve endings
2. Encapsulated nerve endings
3. Separate sensory cells

12

What are some characteristics of free nerve endings, and what do they sense?

- have bare dendrites
- sense pain, temperature, tickle, itch, light touch

13

What are some characteristics of encapsulated nerve endings and what do they sense?

- dendrites are enclosed in connective tissue capsules
- sense pressure, vibration, deep touch

14

What are some characteristics of separate sensory cells, and what do they sense?

- specialized cells that respond to stimuli
- sense vision, taste, hearing, balance

15

What are the 3 location classifications of senses?

1. Exteroreceptors- near surface of body
2. Interoreceptors- monitor internal environment
3. Proprioceptors- in muscle, tendons, joints, & inner ear

16

What are exteroreceptors?

- receptors found near the surface of the body
- receive external stimuli
- sense hearing, vision, smell, touch, taste, pressure, pain, vibration and temperature

17

What are interoreceptors?

- receptors found in internal environment that monitor and only sense pain and pressure

18

What are proprioceptors?

- found in muscle tendons, joints and inner ear
- sense body positions and movement

19

What are the (5) sense receptor classifications based on the nature of the stimulus?

1. Mechanoreceptors-pressure/stretch
2. Thermo receptors- temperature
3. Nociceptors- tissue damage
4. Photoreceptors- light/vision
5. Chemoreceptors- specific molecules

20

What do mechanoreceptors sense?

PRESSURE and STRETCH
-touch
-pressure
-vibration
-hearing
- proprioception
- equilibrium
- blood pressure/ hydrostatic pressure

21

What do thermoreceptors sense?

sense TEMPERATURE

22

What do nociceptors sense?

sense TISSUE DAMAGE or PAIN

23

What do photoreceptors sense?

LIGHT and VISION

24

What do chemoreceptors sense?

SPECIFIC MOLECULES ( taste, smell, changes in body fluid)

25

What is sensory adaptation?

- decreased sensitivity to a sustained stimulus;
- ability to adapt varies:
-smell pressure and touch receptor as fast
- pain, body position receptors are slow

26

What senses are slow to adapt?

pain and body position

27

What senses are fast to adapt?

smell, pressure, touch receptors

28

What is somatic tactile sensation?

touch

29

What are the different kinds of somatic tactile sensations?

- crude touch
- discriminatory touch
- pressure
- vibration
- itch
- tickle

30

What is crude touch?

perception that something has touched the skin