Homeostasis and Response

Question 1

what do we need to control in our bodies (3 things)?

Answer 1

Blood glucose concentration

body temperature

water intake

Question 2

what is homeostasis?

Answer 2

process by which the body maintains a constant internal environment

Question 3

What is it called when we are too hot/ too cold?

Answer 3

too hot- hyperthermia

too cold- hypothermia

Question 4

What does hyperthermia cause?

Answer 4

organs and brain slows down and tries to preserve heat causing heart failure as too much vasoconstriction leads to not enough blood in heart

Question 5

What is the bodies reaction to too cold?

Answer 5

• hair raise for insulation

- shivering to release heat energy

Question 6

What is the bodies reaction to too hot?

Answer 6

• sweat
• lowering hairs to reduce insulation
• vasodilation ( The process includes the widening of blood vessels at the skin surface to increase heat loss through the surface of the skin)
  to release heat through skin

Question 7

What are receptors?

Answer 7

specialised cells that sense a stimuli like skin receptors/ eye receptor

Question 8

Why does water content need to be regulated?

Answer 8

wrong amount of water causes cells to undergo osmosis and burst

Question 9

What is the Co-ordination centre?

Answer 9

(spinal cord, brain and pancreas`)– they receive information from receptors and tell the effectors what to do

Question 10

What are effectors?

Answer 10

part of the body that produces a response so muscles contractions and hormones released from glands