Urination and Composition of Urine

Q.

What is the main function of the kidney?

Q.

17. State two vital functions of human kidney. (2)

Q. Skin is an excretory organ.

1. True
2. False

Q.

What is filtration in the human body?

Q. The process of removal of urine from the urinary bladder is called .

1. secretion
2. parturition
3. micturition
4. absorption

Q.

What are the factors which reduce the activity of the kidneys?

Q. The process of expelling urine from the urinary bladder is called _________.

1. secretion
2. micturition
3. parturition
4. egestion

Q. Following is the urine analysis report of a person. Analyze and suggest the changes he should bring in his lifestyle.
$$\begin{array}{cccc}\text{Compound}& \text{Unit}& \text{Result}& \text{Normal range}\\ \text{Urea}& \text{gm/day}& \text{8}& \text{12-20}\\ \text{Glucose}& \text{mmol/L}& \text{1.2}& \text{0-0.8}\\ \text{Chlorides}& \text{mEq/L}& 38& \text{25-40}\\ \text{Uric acid}& \text{gm/day}& 596& \text{250-750}\\ \text{Calcium}& \text{mg/day}& \text{283}& \text{100-300}\end{array}$$

1. He should decrease the consumption of protein rich foods.
2. He should consume less amount of sugars.
3. He should drink less amount of water.
4. He should increase the consumption of protein rich foods.

Q. The yellow colour of urine is due to ____________.

1. melanin
2. uric acid
3. urochrome
4. cholesterol

Q.

How does water play a role in kidney function?

Q.

What is human urine made of?

Q. A large quantity of fluid is filtered everyday by the nephrons in the kidneys. Only about 1% is excreted as urine. The remaining 99% of the filtrate

1. gets collected in renal filtrate
2. is lost as sweat
3. is stored in the urinary bladder
4. is reabsorbed into blood

Q. The flow of urine into the urinary bladder is controlled by sphincters.

1. True
2. False

Q.

The blood that reaches the kidney has only harmful substances.

1. True

2. False

Q. What do kidneys excrete in the form of urine?

1. Unwanted salts
2. Excess water
3. All of the above.
4. Urea

Q.

Name the basic functional unit of human kidney.

Q.

Fill in the blanks​

(iv) The excretory system removes the waste products generated from several reactions occurring in our body.​

Q.

Give one word for the following:

First fluid released from the mammary glands after birth.

Q. Which muscle opens up when we have the urge to pee?

1. Ureter muscle
2. Kidney muscle
3. Sphincter muscle
4. Rectal muscle

Q.

State whether the following statements are true or false.​(iii) Urine contains urea in excess.​

Q. In case of kidney failure, builds up in the body.

1. urea
2. glucose
3. water

Q. Statement 1 (S1)- Urine is generated at regular intervals in an organism.
Statement 2 (S2)- The composition of urine does not vary in an organism.

1. Both S1 and S2 are false.
2. Only S1 is true.
3. Only S2 is true.
4. Both S1 and S2 are true.

Q. A large quantity of fluid is filtered everyday by the nephrons in the kidneys. Only 1% is excreted as urine. The remaining 99% of the filtrate ____________.

1. gets collected in renal filtrate
2. is lost as sweat
3. is stored in the urinary bladder
4. is reabsorbed into blood

Q. Arrange the following micturation events:
(i) Relaxation of the lower sphincter,
(ii) Removal of urine out of the body,
(iii) Relaxation of the upper sphincter,
(iv) The bladder is filled with urine,
(v) Tension in the bladder wall increases.

1. i, iii, iv, ii, v
2. iii, ii, iv, v, i
3. iv, ii, iii, i, v
4. iv, v, iii, i, ii

Q. Choose the correct sentences about urine.

1. Urine contains 95% inorganic wastes and 5% water.
2. Urine is amber colored due to the presence of urochrome.
3. Urine contains both organic and inorganic waste materials.
4. Protein-rich food increases the amount of urea in urine.

Q.

Urine consists of 95% urea.

1. True

2. False

Q.

Diuresis is a condition in which

1. The excretory volume of urine decreases

2. The excretory volume of urine increases

3. The kidney fails to excrete urine

4. Water balance of the body is disturbed

Q. Identify a process based on the following clues.
$\bullet$ It is regulated by the nerves and muscles of the urine storage organ.
$\bullet$ A pair of sphincters play a vital role in regulating this process.

1. Micturition
2. Secretion
3. Filteration
4. Reabsorption

Q.

The process that involves the expelling of urine from the urinary bladder is

1. Excretion

2. Micturition

3. Parturition

4. Egestion

Q.

what is the main toxic waste kidney filters from the blood?