Excretory

Question 1

What are the organs included in Excretory
And what they excrete

Answer 1

Large intestine : feces
Lungs : co2
Skin: sweat,salt,h2o,urea
Liver:breaks down toxin
Kidneys :filtration

Question 2

Where is the kidney located

Answer 2

Below rib cage in either side of spine

Question 3

What are the kidney hats

Answer 3

Adrenal glands which secretes hormones like adrenaline, cortisol

Question 4

What is the function of kidney

Answer 4

Regulates filtration and transcription of blood and other substances

Question 5

Where does filtration occur

Answer 5

Cortex of kidney packed with capillaries

Question 6

What happens in the medulla

Answer 6

Reabsorption

Question 7

Nephron

Answer 7

Functional part of kidney packed with cappilaries (tube)

Question 8

What are the parts of nephron

Answer 8

Glumerulus
Loop of henle
Collective duct
Renal artery ( entrance)
Vein(exit)
Bowman’s
Capillaries
Distal tubule

Question 9

How does filtration happen

Answer 9

Blood enters the glomerous then filtrate is dumped into nephron occurs in cortex of kidney then filtrate is stored in bowman’s capsule

Question 10

How does reabsorption happen

Answer 10

Reabsorption happen as filtrate passes it mostly occurs in the medulla then in the proximal, loop, distal,

Question 11

What gets absorbed in proximal

Answer 11

Nutrients and salts

Question 12

Loop of Henley what gets reabsorbed

Answer 12

Goes to high salt concentration and water is absorbed

Question 13

What is absorbed in the distal tubule

Answer 13

Salt to keep medulla salty

Question 14

Why do kidney filter everything

Answer 14

To ensure unusual stuff is excreted

Question 15

How does blood return to blood

Answer 15

Via renal vein

Question 16

Where does remaining filtrate go

Answer 16

Turns into urine enters collective duct

Question 17

What does kidney filter from blood

Answer 17

Filtrate

Question 18

What is in the filtrate that is excreted

Answer 18

Salt,h2o, urea ,

Question 19

What is reabsorbed in filtrate

Answer 19

Glucose , vitamins ,water,salt

Question 20

Which part of the kidney has more salt which has less

Answer 20

Medulla : salty
Cortex : less

Question 21

Function of excretion

Answer 21

Excretion of metabolic waste

Question 22

What is urea

Answer 22

A colourless odourless solid soluble in water

Question 23

Why is urea made

Answer 23

To prevent excess nitrogen

Question 24

Where is urea and how is it made

Answer 24

In the liver to mix ammonia with Co2

Question 25

What are the filtrate

Answer 25

Water, salt , urea

Question 26

What are reabsorbed

Answer 26

Glucose and vitamins

Question 27

Process of filtration in nephron

Answer 27

Blood enters glomerulus then filtrates from blood is dumped in the nephron then collects in the bowman’s capsule proceeding to proximal tubule

Question 28

Reabsorption process

Answer 28

Filtrate passes through medulla and these gets reabsorbed from each part Proximal : nutrients/ salt Loop of Henley: water diffused back after going to high salt concentration Distal: salt is reabsorbed for medulla salt concentration

Question 29

Path of filtrate throughout nephron

Answer 29

Oxygen rich blood enters renal artery then to the glomerulus where filtrate is then collected in the bowman’s capsule separated from blood proceeds to the proximal for Reabsorption of water, nutrients and ions occur then to the loop of Henley where h2 o is diffused back then to the distal tubule to be collected in the collecting duct to be excreted through pelvis out the urethra

Question 30

Medulla function

Answer 30

Water absorption and blood pH ( loop of Henley )

Question 31

Cortex

Answer 31

( proximal tubule , glomerulus ) blood filtration

Question 32

Ureter

Answer 32

Transport of urine

Question 33

Bladder

Answer 33

Urine temporary storage

Question 34

Renal vein

Answer 34

De oxygenated blood exit and filtered back to heart through the vena cava

Question 35

Renal artery

Answer 35

Unfiltered. Oxygen rich blood entrance to kidney from aorta

Question 36

Why does kidney filter blood from artery

Answer 36

To remove excess waste while maintaining blood pH

Question 37

Why do kidneys filter out more than they need to reabsorbed certain compounds

Answer 37

To ensure homeostasis in fluid, acids and blood pressure enough to keep vital substances and get rid of waste

Question 38

3 ways kidneys help with homeostasis

Answer 38

Remove waste Regulation of blood ph Blood volume

Question 39

6 materials filtered from blood

Answer 39

Urea, water, amino acids,

Question 40

How are kidney activities controlled

Question 41

Dialysis

Answer 41

Process of filtration through a machine