B16 Homeostasis Flashcards

1
Q

What does the term homeostasis mean?

A

Regu;ation of the internal conditions of a cell or organism to maintain optimum conditions

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

Name three factors that are contolled by the endocrine system

A

Blood glucose concentration

Body temperature

Water levels

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

Name the type of organ found in the endocrine system

A

Glands

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

Name the chemical released from endocrine glands

A

Hormones

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

What is the role of a coordinator?

A

Recieve and process information from receptors

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

What is the role of a coordinator?

A

Recieve and process information from receptors

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

Why is it important that homeostasis works?

A

Maintains optimum conditions for enzymes and all cell functions

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

What is the role of an effector?

A

Muscles or glands that bring about responses which restore optimium conditions

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

How do hormones travel through the body?

A

Bloodstream

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

Name the endocrine gland labelled A

A

Pituitary gland

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

Name the endocrine gland labelled B

A

Thyroid gland

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

Name the endocrine gland labelled C

A

Adrenal gland

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

Name the endocrine gland labelled D

A

Pancreas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Name the endocrine gland labelled E

A

Ovaries

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

Name the endocrine gland labelled F

A

Testes

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

Give two differences between the endocrine system and nervous system

A

Endocrine system is slower
Endocrine system effects last for longer

17
Q

What is a target organ?

A

Target organ produces an effect when the hormone attaches to the cells.

18
Q

Name the master gland of the endocrine system

A

Pituitary gland

19
Q

Name the organ that monitors and controls the blood glucose concentration

A

Pancreas

20
Q

When does the pancreas release insulin?

A

When the blood glucose concentration is too high

21
Q

What effect does insulin have on the body?

A

Reduces the blood glucose concentration

22
Q

Name the target organs for insulin

A

Liver and muscles

23
Q

What effect does insulin have on the liver and muscles?

A

Remove excess glucose from the blood
Excess glucose is stored as glycogen

24
Q

How is type I diabetes treated?

A

Insulin

25
Q

What causes type I diabetes?

A

Pancreas fails to release sufficient insulin

26
Q

What is a symptom of type I diabetes?

A

Uncontrolled high blood glucose concentration

27
Q

How is type 2 diabetes treated?

A

Carbohydrate controlled diet
Increase in exercise

28
Q

What causes type 2 diabetes?

A

Liver and muscles do not respond to insulin

29
Q

Name the hormone released when blood glucose concentration is too low.(HT)

A

Glucagon

30
Q

Name the gland that produces glucagon (HT)

A

Pancreas

31
Q

What effect does glucagon have on the muscles and liver (HT)

A

Glycogen is converted into glucose
Glucose is released into the blood

32
Q

Name the organ that releases thyroxine (HT)

A

Thyroid gland

33
Q

What does thyroxine control in the body? (HT)

A

Controls the body’s metabolic rate, growth and development

34
Q

How is the release of thyroxine controlled by negative feedback? (HT)

A

Levels of thyroxine fall - detected by receptors in the brain
Pituitary gland release thyroxine stimulating hormone (TSH)
More thyroxine release by thyroid gland
Blood thyroxine returns to normal level

35
Q

Name the gland that releases adrenaline (HT)

A

Adrenal glands

36
Q

What effect does adrenalin have on the body? (HT)

A

Released when stressed
Increase in heart and breathing rate
Stored glycogen converted to glucose
Dilation of pupils
Increased metal awareness
Blood diverted from digestive system to muscles