Excretion and human urinary system

Q uestion one: Complete the following:

1- Urinary system consists of ………, ……… and ……… .

kidney – ureters – urinary bladder  

2 - The two kidneys have ……… shape and exist in ……… cavity.

bean – abdomen  

3 - The waste materials can be ……… or ……… or ……… .

gases – liquids – solids

4 - The two ureters transfer ……… to ……… .

urine – urinary bladder  

5 - The body gets rid of carbon dioxide and water vapour by ……… .

lungs  

6 - Nitrogen wastes include……… and ……… .

uria – uric acid 

7 - The body can get rid of exess salt by ……… through ……… .

skin – sweat  

8 - The solid waste materials are stored in ……… .

large intestines  

9 - Sweat increases in ……… .

summer

Q uestion two: Write one function for:

1- The kidney

Filters blood from urine

2 - The ureter

Transfers urine to urinary bladder.  

3 - The urinary bladder.

Keeps the urine temporary.

4 - Large intestines.

Store solid waste materials.  

5 - Sweat gland.

Filters sweat and excess salts.  

Q uestion three: Give reasons for:

1- We should not keep waste materials inside our body.

Because body will not use them and they are dangerous and poisons.  

2 - Skin has a role in excretion.

Because it helps in getting rid of excess salts.  

3 - Two kidneys are the most important organ in urinary system.

Because they filter the urine from blood.

4 - We shouldn't keep urine in our body for long time.

Because it is dangerous substance that harms the body.  

5 - The sweat has a salty taste.

Because it contains excess salts from body.  

6 - We should avoid spicy food.

To keep the urinary system healthy.

Q uestion four: Write scientific term:

1- Process of getting rid of waste materials outside of body.

Excretion

2 - The wastes that include uria and uric acid.

Nitrogen wastes  

3 - The gland that filters sweat from blood.

Sweat gland  

4 - Two glands of bean shaped exist inside cavity of abdomen near the backbone.

Two kidneys  

5 - The organ that gets rid of carbon dioxide and water vapour.

Lungs