Control of Blood Water Potential (WIP) Flashcards

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

What is osmoregulation?

A

The homeostatic control of the water potential and salt content of the blood. This in turn helps maintain a fairly constant water potential of blood plasma and tissue fluid.

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

What is the key function of the nephron?

A

To carry out osmoregulation.

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

What are the stages of nephron carrying out osmoregulation?

A
  • Formation of glomerular filtrate
  • Selective reabsorption of glucose and water by the proximal convoluted tubule
  • Maintenance of a gradient of sodium ions in the medulla by the loop of Henle
  • Reabsorption of water by the distal convoluted tubules and collecting ducts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the renal pelvis?

A

A funnel-shaped cavity that collects urine into the ureter.

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

What is the ureter?

A

A tube that carries urine to the bladder.

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

What does the renal artery do?

A

Supplies the kidney with blood from the heart via the aorta.

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

What does the renal vein do?

A

Returns blood to the heart via the vena cava.

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

What is the fibrous capsule?

A

An outer membrane that protects the kidney.

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

What is the cortex?

A

A lighter coloured outer region made up of renal (Bowman’s) capsules, convoluted tubules of blood vessels.

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

What is the medulla?

A

A darker coloured inner region made up of loops of Henle, collecting ducts and blood vessels.

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

What happens during ultrafiltration?

A

Removes water, urea, glucose, amino acids + mineral ions from the blood. It does not removed RBC’s, WBC’s. platelets or large proteins.

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

Where does ultrafiltration occur?

A

The Bowman’s capsule.

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

What are the barriers to glomerular filtrate formation?

A
  • Capillary endothelial cells
  • Connective tissue
  • Epithelial cells of the renal cells
  • The hydrostatic pressure from renal capsule fluid
  • The less negative water potential of the blood in the glomerulus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are podocytes?

A

Specialised cells with spaces between them to allow filtrate to pass through. They make up the inner layer of the renal capsule.

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