Homeotstasis

Question 1

What is homeostasis?

Answer 1

Homeostasis is the process by which the body keeps its internal environment stable and balanced, even when the outside conditions change.

Question 2

What are the three things the human body has to control?

Answer 2

Body temperature
Water levels
Blood glucose levels

Question 3

What is a stimuli?

Answer 3

Changes in environment

Question 4

What are receptors?

Answer 4

Cells that detect change the environment

Question 5

What are coordination centres?

Answer 5

Areas that receive and process information , they coordinate a response

Question 6

Why is homeostasis important?

Answer 6

To maintain optimal conditions for enzymes and cell function

Question 7

What are three things all control systems include?

Answer 7

Receptors
Coordination centres
Effectors

Question 8

What are the three coordination centres?

Answer 8

Brain
Spinal cord
Pancreas

Question 9

What are synapses?

Answer 9

A gap between two neurons

Question 10

How do synapses work?

Answer 10

Electrical impulses sent fown
They can travel through synapses
At the end of a neurone, chemicals released
Receptors on other neurone receive the chemical

Question 11

Whats the difference between a hormonal system and a nervous system?

Answer 11

Hormonal
Uses chemical messages
Slow
Travels all over the body
Voluntary and involuntary

Question 12

What are the three types of neuron?

Answer 12

Sensory- carry signals from sensory organs to CNS
Motor- sends signals from CNS to muscles and glands
Relay- connect sensory and motor within the CNS

Question 13

What’s the role of the adrenal gland?

Answer 13

Respond to fear/ stress
Releases adrenaline

Question 14

What’s the role of the ovaries?

Answer 14

Controls menstruel cycle
Releases Oestrogen and progesterone

Question 15

What’s type 1 diabetes and how is it treated?

Answer 15

When the pancreas doesn’t produce enough insulin
Treated with insulin injections

Question 16

Whats the role of the Pituitary Gland?

Answer 16

Stimulates the thyroid to make thyroxine to control the rate of metabolism

Controls growth in children

Question 17

What hormones do pituitary gland release?

Answer 17

LH(luteinising hormone)
FSH( follicule stimulating hormone)
ADH(anti diuretic hormone)

Question 18

What is the role of the thyroid?

Answer 18

To control the bodies metabolic rate

Question 19

What hormones does the thyroid release?

Answer 19

Thyroxine

Question 20

What’s the role of the pancreas?

Answer 20

To control blood glucose concentration

Question 21

What does the pancreas release?

Answer 21

Insulin and glucagon

Question 22

What’s the role of the adrenal glands?

Answer 22

Prepare body for fight or flight response

Respond to fear or stress

Question 23

What hormone does the adrenal gland release?

Answer 23

Adrenaline

Question 24

What do the testes release?

Answer 24

Testosterone

Question 25

What happens on day 1-4 of the menstruel cycle? (Stage one)

Answer 25

Uterul lining breaks down (menstruation )

Question 26

What happens on day 4-14 of the mensuel cycle? (Stage 2)

Answer 26

Lining of uterus builds up

Question 27

What happens on day 14 of the menstrual cycle?(stage 3)

Answer 27

Egg releases from ovary- ovulation

Question 28

What happens on stage 14-28 of the menstruel cycle? (Stage 4)

Answer 28

Wall lining is maintained

Question 29

What does the FSH (Follicle stimulating hormone) do?

Answer 29

It causes eggs in the ovary to mature (the eggs grow surrounded by cells called follicles)

Question 30

What does LH (luteneising hormone)do?

Answer 30

Stimulates the release of the egg at ovulation

Question 31

What does oestrogen and progesterone do?

Answer 31

Stimulates the build up and maintenance of the uterus lining