Nephrons

Question 1

Approximately how many nephrons are in each kidney

Answer 1

1 million

Question 2

Where is nephrons blood supplied from

Answer 2

Renal artery

Question 3

What do nephrons ensure

Answer 3

Waste products are excreted whilst substances the body needs are reabsorbed into the blood

Question 4

What is an important part of the kidney

Answer 4

Nephrons

Question 5

What is ultrafiltration

Answer 5

Removes substances from the blood

Question 6

What is selective reabsorption

Answer 6

Reasorbs the substances that the body needs

Question 7

What is urine formation

Answer 7

Substances which are not reabsorbed travel as urine

Question 8

Step one- Where does ultrafiltration occurs

Answer 8

Bowman’s capsule

Question 9

Step two- In ultrafiltration, where does blood enter from

Answer 9

Renal artery and flows through the capillaries under high pressure

Question 10

Step three- podocytes make up a basement membrane, leave small gaps, small molecules and ions are squeezed out of the blood and into the nephron, what stays in the blood

Answer 10

Large molecules such as proteins

Question 11

Where does most of the reabsorption occur

Answer 11

Proximal convoluted tubule

Question 12

What diffuses in the blood through selective reabsorption

Answer 12

Simple ions, amino acids and glucose

Question 13

How does some large molecules be reabsorbed

Answer 13

Endocytosis

Question 14

What is the loop of henle important in

Answer 14

Reabsorption of water and salt

Question 15

What hormone is released by the pituitary gland

Answer 15

Antidiuretic hormone

Question 16

What happens in the descending limb of the loop of henle

Answer 16

Water diffuses into the body via osmosis

Question 17

What happens in the ascending limb of the loop of henle

Answer 17

Ions, sodium, chlorine are absorbed into the body from the loop of henle

Question 18

What happens in the distal convoluted tubule

Answer 18

After loop of henle
Final reabsorption happens

Question 19

What is the glomerulus

Answer 19

Knot of capillaries

Question 20

What does the renal ( bowman’s) capsule collects

Answer 20

Filtrate from the glomerulus

Question 21

What do tubules allow

Answer 21

Transportation of filtrate to and from the loop of henle

Question 22

What does the collecting duct collect

Answer 22

Urine and passes to ureter