Flashcards in Sensory, motor, and integrative system Deck (89)
What is sensation?
Conscious or unconscious awareness of any stimulus
What is perception?
Conscious awareness and interpretations of the meaning of a sensation
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.
How many stimuluses does a receptor respond to?
What are the classifications of senses?
What 4 kinds of general sense receptors are found through out the body?
What kind of receptors are found in muscles and joints?
Define special senses.
receptors found in specialized organs that respond to specific stimuli
all found in the head
What are the 5 kinds of special senses?
How can we classify receptors?
nature of stimulus
What are the 3 structural classifications of receptors?
1. Free nerve endings
2. Encapsulated nerve endings
3. Separate sensory cells
What are some characteristics of free nerve endings, and what do they sense?
- have bare dendrites
- sense pain, temperature, tickle, itch, light touch
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
What are some characteristics of separate sensory cells, and what do they sense?
- specialized cells that respond to stimuli
- sense vision, taste, hearing, balance
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
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
What are interoreceptors?
- receptors found in internal environment that monitor and only sense pain and pressure
What are proprioceptors?
- found in muscle tendons, joints and inner ear
- sense body positions and movement
What are the (5) sense receptor classifications based on the nature of the stimulus?
2. Thermo receptors- temperature
3. Nociceptors- tissue damage
4. Photoreceptors- light/vision
5. Chemoreceptors- specific molecules
What do mechanoreceptors sense?
PRESSURE and STRETCH
- blood pressure/ hydrostatic pressure
What do thermoreceptors sense?
What do nociceptors sense?
sense TISSUE DAMAGE or PAIN
What do photoreceptors sense?
LIGHT and VISION
What do chemoreceptors sense?
SPECIFIC MOLECULES ( taste, smell, changes in body fluid)
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
What senses are slow to adapt?
pain and body position
What senses are fast to adapt?
smell, pressure, touch receptors
What is somatic tactile sensation?
What are the different kinds of somatic tactile sensations?
- crude touch
- discriminatory touch