The Endocrine System Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is the endocrine system?

A

A network of glands throughout the body that manufacture and secrete chemical messages known as hormones.

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

What are the 4 components of the endocrine system?

A

Hypothalamus
Pituitary gland
Adrenal glands
Ovaries or Testis

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

What is the role of the Hypothalamus?

A

Brain region controlling the pituitary gland

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

What is the role of the Pituitary gland?

A

Secretes many different hormones,some of which affect other glands

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

What is the role of the Adrenal glands?

A

Help trigger the fight - or - flight response

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

What is the role of the ovaries + testis?

A

Ovaries - secrete female sex hormones
Testis - secrete make sex hormones

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

What do the endocrine glands do?

A

Produce and secrete hormones that regulate the activity of cells or organs in the body.

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

What do glands does the endocrine system consist of?

A

Pituitary glands
Adrenal glands
Reproductive organs

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

How is the endocrine system regulated?

A

By feedback
E.g. a signal sent from the hypothalamus to the pituitary gland in the form of a ‘releasing hormone’ which causes the pituitary gland to releases ‘stimulating hormone’ into the bloodstream the hormone then signals the target gland (e.g. the adrenal glands) to secrete it’s hormone.

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

What are hormones?

A

The body’s chemical messengers

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

How do hormones work?

A

Circulate in the bloodstream and are carried to target sites throughout the body

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

How do target cells respond to particular hormones?

A

The target cells have receptors for that particular hormone.

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

What causes a dysfunction of bodily systems?

A

when too much or too little of an hormone is released at the wrong time.
E.g. too high a level of cortisol can lead to Cushing’s syndrome.

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

What is the pituitary gland controlled by?

A

The hypothalamus

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

How does the hypothalamus function?

A

Receives info from many sources about the basic functions of the body, then uses this info to help regulate these functions.

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

What are the two main parts of the pituitary gland?

A

the anterior pituitary (front)
the posterior pituitary (back)

17
Q

Give an example of a hormones that are released by the anterior pituitary + what they’re responsible for.

A

ACTH as a response to stress - stimulates the adrenal glands to produce cortisol.
Luteinising hormone (LH) + Follicle - stimulating hormone (FSH) - both important in the control of reproductive functioning + sexual characteristics.

18
Q

Give an example of a hormones that are released by the posterior pituitary + what they’re responsible for.

A

Oxytocin - stimulates contraction of the uterus during childbirth + is important for mother - infant bonding.

19
Q

how many adrenal glands are there + where are the adrenal glands located?

A

2
sit on top of the kidneys

20
Q

What are the two distinct parts that the adrenal glands are made up of?

A

The adrenal cortex
The adrenal medulla

21
Q

What are the main distinctions between the adrenal cortex and the adrenal medulla?

A

The hormones produced by the adrenal cortex are necessary for life + the hormones produced by the adrenal medulla aren’t.

22
Q

Give an example of a hormones that are released by the adrenal cortex + what they’re responsible for.

A

Aldosterone - responsible for maintaining blood volume + blood pressure

23
Q

Give an example of a hormones that are released by the adrenal medulla + what they’re responsible for.

A

Adrenaline + noradrenaline - hormones that prepare the body for fight or flight
Adrenaline helps the body respond to a stressful situation e.g. increasing the heart rate + blood flow to the muscles and brain.
Noradrenaline constricts the blood vessels causing blood pressure to increase.

24
Q

What are the ovaries responsible for?

A

The production of eggs

25
Q

What hormones do the ovaries produce?

A

Oestrogen
Progesterone

26
Q

What hormones do the testes produce?

A

Testosterone