Homeostasis and control Flashcards

1
Q

Define Homeostasis

A

Keeping our bodies the same even if the environment changes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What factors in your body do you need to keep constant and why ?

A

Temperature - Enzymes denature if you don’t control you body temp

Blood Co2 - needed for aerobic respiration

Water level- Right water balance for chemical reactions

Blood glucose- Enough glucose for muscles and for them to respire

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Types of receptors

A
Light receptors 
temp receptors 
sound receptors
pressure receptors 
taste receptors 
smell receptors
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The pathway of information

A
  1. Stimulus
  2. Receptor
  3. sensory nerve
  4. Brain/spinal cord
  5. Motor nerve
  6. Response
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which organs of the body are involved in the peripheral nervous system ?

A

Motor nerves

sensory nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which organs are involved in the central nervous system ?

A

Brain

spinal cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the main functions of the peripheral nervous system ?

A

Send signals in and out of the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the main functions of the central nervous system ?

A

Control and decide what to do

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens to the peripheral nervous system if it is damaged ?

A

It will loose the ability to control movement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens to the central nervous system of it is damaged ?

A

Loose control of the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the job of reflexes

A

They ensure survival and avoid damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How are reflexes controlled

A

predominately controlled by the spinal cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Name the Hormones that the pituarity gland creates

A
Growth Hormone 
ADH
TSH
ACTH
FSH and LH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does Growth hormone do to your body ?

A

Helps your body grow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does ADH stand for and what does it do ?

A

Antidiuretic Hormone - produces pee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does TSH do ?

A

Acts on the thyroid gland

17
Q

What does ACTH do ?

A

Acts on the adrenal gland

18
Q

Name all the main glands that produce a Hormone

A
Pituarity 
Thyroid gland 
Pancreas 
Adrenal 
Ovaries
Testies
19
Q

Name the Hormone that is produced in the thyroid gland and what it does

A

thyroxine- Makes chemical reactions quicker in the thyroid gland

20
Q

Name the two Hormones that the pancreas produces

A

Insulin

Glucagon

21
Q

What does glucagon do ?

A

Controls blood sugar levels once it increases

22
Q

What does insulin do ?

A

controls blood sugar levels once it starts to decrease

23
Q

Name the Hormone produced in the adrenal gland and what it does ?

A

Adrenaline - Increases heart rate and blood pressure and improves reflexes sensitivity

24
Q

name the two Hormones that the ovaries produce ?

A

oestrogen

progestogen

25
Q

What does oestrogen and progestogen do to the body ?

A

Develops the ladies reproductive system

26
Q

Name the Hormone the testies produces and explain what it does ?

A

Testosterone- develops male production system

27
Q

What are endocrine glands

A

They secrete their products directly into the blood

28
Q

What are exocrine glands

A

Glands that produce onto and secrete substances onto an epithelia surface

29
Q

Define target cells

A

A cell by which bears receptors for a specific hormone , drug or other signalling molecule

30
Q

Define target tissue

A

Target tissue refers to the intended site that a hormone will affect

31
Q

Define hormone receptor

A

A receptor that binds to a specific hormone

32
Q

What is Osmoregulation

A

control of blood water potential

33
Q

What happens to the body if the blood water potential is too low ?

A

This causes water to be absorbed into the blood resulting in damaged cells

34
Q

What happens to the body if the water potential is too high

A

This means cells and tissues absorb water from the blood and can be damaged