Senses: 14.1

Question 1

What are the 4 types of receptors?

Answer 1

1. Photoreceptors
2. Chemoreceptors
3. Mechanoreceptors
4. Thermoreceptors

Question 2

What is the purpose of Photoreceptors?

Answer 2

For vision: rods and cones found in the retina of the eye.

Question 3

What is the purpose of Chemoreceptors?

Answer 3

For taste: taste buds found in the tongue.
For smell: olfactory cells found in the olfactory cavity.
For internal senses: osmoreceptors that regulate blood pressure, carbon dioxide, balance, etc

Question 4

What is the purpose of Mechanoreceptors?

Answer 4

For touch / pressure / pain - receptors in the skin
For hearing: hair cells in the inner ear detect sound waves
For balance: hair cells in the ear detect motion
For body position: proprioceptors and stretch receptors in the muscles

Question 5

What is the purpose of Thermoreceptors?

Answer 5

For temperature: receptors in the skin detect changes in radiant energy.

Question 6

What is sensation?

Answer 6

This includes receiving and processing by the brain of neural impulses from the sensory receptors.

Question 7

What is Perception?

Answer 7

The interpretation of sensory information by the cerebral cortex. Often value judgements of the sensations are made and processed to evoke emotion.

Question 8

What is Sensory Adaption?

Answer 8

When the receptor becomes accustomed to the stimulus.