Excretion

Question 1

What is the goal of excretion

Answer 1

The goal of excretion is to remove metabolic waste and excess substances from an organism. Hope the organism maintain homeostasis

Question 2

What are the excretory organs

Answer 2

Lungs (CO2 and O2), sweat glands and skin (water, salts and urea), kidneys (salt, water and urea)

Question 3

Which body part plays an important role in the excretory system but is not an excretory organ

Answer 3

Liver

Question 4

What is the livers role in the excretory system

Answer 4

The most important regulatory agent in body

Changes ammonia acid’s into urea

Stores excess glucose in the form of glycogen

Decomposes haemoglobin from old RBCs - this creates waste that makes a bile

Helps with the detoxification of alcohol and other substances like poison

Question 5

What is metabolic waste and what is its source

Answer 5

Metabolic waste or substances produced by the metabolic activities like a chemical reaction’s occurring in the cells of our body of living organisms

Question 6

What hormone plays an important role in the reabsorption of water

Answer 6

ADH

Question 7

Where does water reabsorption of current in the nephron

Answer 7

Watery absorption occurs in the proximal tube, descending loop of Henle, and collecting duct

Question 8

What are the components of urine? What parts of the nephron filters in absorbs these compounds?

Answer 8

Water, urea and salts make up urine. All or filtered from the glomerulus to Bowmans capsule. Most salts are reabsorbed in the proximal tubule’s

Question 9

Where does filterstion, reabsorption and secretion occur ? What happens in these processes?

Answer 9

Filtration occurs from the glomerulus to Bowmans capsule

Reabsorption occurs mostly in the proximal tubule’s

Secretion mostly occurs in the distal tubule