Excretory System

Question 1

Homeostasis

Answer 1

The maintenance of a constant internal environment within the body.
(E.g. temperature, blood oxygen, water levels)

Question 2

Filtration (where?)

Answer 2

Blood enters glomerulus under pressure and is squeezed into the Bowman’s capsule (glomerular filtrate).
Everything except blood cells + large proteins are filtered

Question 3

Reabsorption at Proximal Convoluted Tubule

Answer 3

Glomerular filtrate enters Proximal Convoluted Tubule.
All food molecules are absorbed (glucose, amino acids, water)

Question 4

Reabsorption at Loop of Henle

Answer 4

Reabsorption of water by osmosis

Question 5

Reabsorption coming up Loop of Henle

Answer 5

Reabsorption of salt by Active Transport (against the concentration gradient, energy needed)

Question 6

Secretion at Distal Convoluted Tubule

Answer 6

Release of waste chemicals (H+ ions, toxins, uric acid). Maintains pH balance of the blood.

Question 7

ADH

Answer 7

Anti-Diuretic Hormone
Produced in Hypothalamus, secreted from Pituitary Gland

Question 8

Excretion

Answer 8

The removal of metabolic waste from a cell