homeostasis

Question 1

what is homeostasis

Answer 1

the balance of body functions to maintain a constant internal environment

Question 2

what is an internal environment

Answer 2

conditions in the body staying constant

Question 3

tissue fluid

Answer 3

fluid running between cells and blood capillaries

Question 4

what is osmoregulation

Answer 4

the control of water levels

Question 5

what is the Meaning of homeothermic?

Answer 5

keeping a constant body temperature

Question 6

what is the thermoregulatory system

Answer 6

contains receptors of blood temperature

Question 7

what does a sweat gland do

Answer 7

releases sweat onto the kin surface so sweat can be evaporated off taking body heat with it

Question 8

what is vasodilation

Answer 8

when blood cells dilate and go nearer the skin surface so heat can be radiated off as a response to being hot

Question 9

what is vasoconstriction

Answer 9

when blood vessels get smaller and go deeper in the vessels in the skin to avoid the heat radiating off- response to being cold

Question 10

what is a hair erector muscle

Answer 10

makes hair stand up on end- to trap a layer of heat when cold

Question 11

what is diabetes

Answer 11

when people can’t produce enough or insulin

Question 12

shivering

Answer 12

muscles contracting uncontrollably to produce heat

Question 13

exocrine gland

Answer 13

secretes its products through a duct into the bloodstream eg:salivary gland

Question 14

endocrine gland

Answer 14

secretes its products directly into the bloodstream eg: pituitary gland or ovaries

Question 15

what is a gland

Answer 15

an organ that secretes a particular chemical substance

Question 16

what does FSH do

Answer 16

• causes eggs to mature in the ovary
• can stimulate ovaries to produce oestrogen
  -from the pituitary gland

Question 17

what does LH do

Answer 17

• causes ovulation
  -from pituitary gland

Question 18

what does INSULIN do

Answer 18

-helps control blood sugar level
-stimlates the liver to turn glucose into glycogen for storage
-from pancreas

Question 18

what does ADH do

Answer 18

-controls water content
-increases permeability of the kidney tubules to water

Question 19

what does glucagon do

Answer 19

raises blood glucose levels
-from pancreas

Question 20

what does adrenaline do

Answer 20

readies body for fight or flight response
- increases heart rate and blood flow to muscles and blood sugar levels
-from adrenals

Question 21

what does testosterone do

Answer 21

causes secondary sexual characteristics in boys
-from testes

Question 22

what does oestrogen do

Answer 22

-causes secondary sexual characteristics in frmsild
-BUILDS p the uterus lining
-from ovaries

Question 23

what does progesterone do

Answer 23

• MAINTAINS uterus lining
  -from ovaries

Question 24

what is glucose

Answer 24

a sugar used in respiration to make ATP

Question 25

what is glycogen

Answer 25

storage carbohydrate made of glucose- stored in muscles and liver

Question 26

what is glucagon

Answer 26

a hormone that causes glycogen to break down into glucose snd blood glucose levels to increase