The Endocrine system

?
What is the endocrine system?
This is a network of glands throughout the body that manufacture and secrete hormones
1 of 23
What are hormones?
Chemical substances that regulate activity of cells and organs in the body
2 of 23
Which are the major glands in the endocrine system?
Pituitery gland, adrenal gland and the reproductivde organs (testes and overies)
3 of 23
How is the endocrine system regulated?
similar to how a thermestat regulates temprature in a room
4 of 23
What role does the hypothalamus play in the secretion of hormones?
It sends a releasing hormone to the pituitery gland.
5 of 23
What role does the pituitery gland play in the secretion of hormones?
It sends a stimulating hormone to the target gland.
6 of 23
What role does the target gland play in the secretion of hormones?
It releases the hormone into the bloodstream
7 of 23
What role does the bloodstream play in the secretion of hormones?
When high enough levels of the hormone are present in the bloodstream the respective glands cease to secreat their hormones starting with the hypothalaums. This creates a stable consentration of the taget hormone in the bloodstream
8 of 23
What is the regualtion of levels of hormone in hte blo0odstreame called?
negetive feedback
9 of 23
Once hormones are released into the bloodstream how do they act?
they circulate around the bloodstream and is carried to target sites throughout the body
10 of 23
Whaty are target cells?
target cells are those cells that are effected by the hormone. this is because they have receptors for that particualr hormone
11 of 23
What happens when enough receptor sites are stimulated in the target cell?
It creates a physiological reaction
12 of 23
What are two critical factors involved in the stimualtion of target cell?
timing and the amount of the hormone released
13 of 23
What happens when the level of a hormone (cortisol) is too high?
It can result in Cushing's syndromee charecterised by hight bloodpresure and depression
14 of 23
What is a typical cause of high levels of cortisol?
A tumour on the Pituitery gland that secreates Adrenacortictrophihc hormone (ATCH) which stimulates the adrenal gland
15 of 23
what are the two diffewrent parts of the pituitery gland?
the Anterior and the posterior
16 of 23
Which hormones are produced in the anterior portion of the pituitery gland?
Adrenocortictrophic hormone (ATCH) whihc regulates the production of cortisol. Luteinising hormone (LH) and Follicle-stimulating hormone (FSH) which stimulate the sexual organs.
17 of 23
Which hormones are produced in the posterior portion of the pituitery gland?
Oxitocin is producesd which stimulates the contraction of the mothers uterus during child birth
18 of 23
What did Elabd (2014) discover about oxytocin?
it is key to healthy maintenence and repair and it declines with age
19 of 23
Where are the adrenal glands located?
above the kidneys
20 of 23
WWhat are the two parts of the adrenal gland?
the external adrenal cortex adn the internal adrenal medula
21 of 23
What is the difference between the two main parts of the adrenal gland?
the hormones released from the adrenal cortex are nesacerry for life, those relased by the medula are not
22 of 23
Which hormone does the adrenal cortex secreat?
Cortisol, which is nesacery for
23 of 23

Other cards in this set

Card 2

Front

What are hormones?

Back

Chemical substances that regulate activity of cells and organs in the body

Card 3

Front

Which are the major glands in the endocrine system?

Back

Preview of the front of card 3

Card 4

Front

How is the endocrine system regulated?

Back

Preview of the front of card 4

Card 5

Front

What role does the hypothalamus play in the secretion of hormones?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Biopsychology resources »