angiotensin, Biology unit 5

Question 1

angiotensin:

What is angiotensin?

Answer 1

Angiotensin is a hormone that helps
regulate your blood pressure by constricting (narrowing) blood vessels and triggering water and salt (sodium) intake.

Question 2

angiotensin:

what is Angiotensin II?

Answer 2

Angiotensin II is the main and active form of the hormone. If your body has too little or too much angiotensin.

Question 3

angiotensin:

part 1 of the system of Angiotensin?

Answer 3

when blood pressure falls, your kidneys release the enzyme renin into your bloodstream.

Question 4

angiotensin:

part 2 of the system of Angiotensin?

Answer 4

Renin splits angiotensinogen, a protein made in your liver and releases the pieces.

Question 5

angiotensin:

part 3 of the system of Angiotensin?

Answer 5

Angiotensin I, which is inactive, flows through your bloodstream and is split by angiotensin-converting enzyme (ACE) in your lungs and kidneys.

Question 6

angiotensin:

part 4 of the system of Angiotensin?

Answer 6

Angiotensin II causes the muscular walls of small arteries (arterioles) to constrict (narrow), increasing blood pressure.

Question 7

angiotensin:

part 5 of the system of Angiotensin?

Answer 7

aldosterone and ADH cause your kidneys to retain sodium.

Aldosterone also causes your kidneys to release
(excrete) potassium through your urine.

The increase in sodium in your bloodstream causes
water retention.

This increases blood volume and blood pressure, thus
completing the renin-angiotensin-aldosterone system.

Question 8

angiotensin:

what is the renin-angiotensin-aldosterone system?

Answer 8

Also activated by other hormones, including corticosteroids, oestrogen and thyroid hormones.

If there’s an issue with any aspect of this system, it can impact your blood pressure and sodium and potassium levels.

However, several other factors can affect your blood pressure, including high cholesterol, genetics and certain medications.