Chapter 6

Question 1

Receptor

Answer 1

Detecting a change in the external/internal environment - in order to regulate/maintain homeostatic functions

Question 2

Thermoreceptors

Answer 2

Respond to heat and cold (skin); temp of blood flowing through brain (hypothalamus)

Question 3

Osmoreceptors

Answer 3

Located in hyp, sensitive to osmotic pressure

In order to maintain water balance

Question 4

Touch receptors

Answer 4

Mainly found in skin,

Sensitive receptors: found in high concentrations, found closer to the surface of the skin

Other receptors: deeper in skin, sensitive to pressure and vibrations

Question 5

Pain receptors

Answer 5

Stimulated by: damage to the tissues, poor blood flow, excessive stimulation

Warns us of damage due to pain - treatment can be enacted to therefore minimise it

To an extent beneficial

Question 6

Reflexes

Answer 6

Rapid, autonomic response to a change in the body’s internal/external temperature

Stimulus, involuntary, rapid and stereotyped

May not be carried all the way to the brain

Question 7

Positive and negative feedback

Answer 7

Positive - intensifies or reinforces the stimulus,

Negative - reduces or eliminates the original stimulus

Question 8

Homeostasis

Answer 8

Keeping our internal environment constant