Nervous System: Receptors

Question 1

What is a change the environment referred to as?

Answer 1

Stimulus

Question 2

What detects a stimulus?

Answer 2

A receptor

Question 3

What do Mechanoreceptors do?

Answer 3

Detect movement, pressures and tensions (sound)

Question 4

What do Thermoreceptors do?

Answer 4

Detect temperature changes (in skin, hypothalamus is responsible for thermoregulation)

Question 5

What do Chemoreceptors do?

Answer 5

Detect chemical stimuli (taste and smell aka olfactory senses)

Question 6

What do Electroreceptors do?

Answer 6

Detect electrical fields (mainly found in fish, like hammerheads)

Question 7

What do Photoreceptors do?

Answer 7

Detect light and some other forms of electromagnetic radiation (bees can detect UV light as well as visible)

Question 8

What is 2-point discrimination?

Answer 8

Receptor density experiments are carried out using toothpicks and seeing how easily one can distinguish between 2 points on different areas of their body