Albert Teen
powered by
Albert logo

YOU ARE LEARNING:

pointer
Anti-Diuretic Hormone
lessonMenuButton

Anti-Diuretic Hormone

lesson introduction

Anti-Diuretic Hormone

The reabsorption of water back into the blood is regulated by the anti-diuretic hormone (ADH).

Which organ controls the water concentration of the blood?

hint button

What do the kidneys produce?

hint button

Sometimes an organism produces lots of urine and sometimes less, even when the organism has consumed the same amount of fluids. What do you think is the best explanation for this?

hint button

Select all the parts of the nephron where water is reabsorbed.

hint button

You can select multiple answers

1

A hormone called ADH helps the nephron absorb more water

The presence of anti-diuretic hormone (ADH) means the nephron absorbs more water if the organism consumes less water.

block image
2

Which part of the nephron does ADH have an affect on?

hint button
block image

So the nephrons can control the amount of water reabsorbed with a hormone called anti-diuretic hormone (ADH). ADH is released from part of the brain called the pituitary gland. ADH makes sure that the collecting duct lets more water through, so more water can be reabsorbed back into the blood.

1

Water level is controlled by negative feedback. Take a look at the diagram. If the body experiences water loss, it means that the pituitary gland will ultimately release _______ ADH.

A) more B) less

hint button
block image
2

When the pituitary gland releases more ADH it means kidneys absorb ________ water.

A) more B) less

hint button
block image
3

How about the right-hand side of the diagram? If the body gains too much water, what will the kidneys ultimately do?

A) Absorb more water B) Absorb less water

hint button
block image
4

Negative feedback means...

that if the body holds too much water, for example, it will try to reduce water absorption and if it holds too little water it will try to increase water absorption. It tries to balance the water content.

block image

Which part of the body detects the change in water level?

hint button

Which part of the brain releases ADH?

hint button

If the blood water level increases above normal, what will be the effect of the negative feedback that controls water content in the body?

hint button