Excretory System of Humans

Q.

What are the six heaviest organs in the human body?

Q.

The main excretory product in human beings is __________ .

Q.

Question 34
Choose the correct path of urine in our body

(a) $kidney\to ureter\to urethra\to urinarybladder$
(b) $kidney\to urinarybladder\to urethra\to ureter$
(c) $kidney\to ureters\to urinarybladder\to urethra$
(d) $urinarybladder\to kidney\to ureter\to urethra$

Q.

Which blood vessel contains the lowest concentration of Urea?

Q.

Which part is common in both reproductive and excretory systems?

1. urinary bladder

2. testis

3. vas deferens

4. urethra

Q.

Glomerular filtrate contains.

1. Blood without blood cells and proteins

2. Plasma without sugar

3. Blood with proteins but without cells

4. Blood without urea

Q.

(a) Name the various organs of the human excretory system.
(b) Draw a neat labeled diagram of the human excretory system.
(c) What is the function of the excretory system in humans?

Q.

There is a pair of bean-shaped organs Pin the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ I' through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.
(a) What is (i) organ P, and (ii) waste substance Q?
(b) Name (i) artery R, and (ii) vein T.
(c) What are tiny filters S known as?
(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.

Q.

Protein-free fluid is formed from blood plasma into the Bowmans capsule.

1. True
2. False

Q.

What is the function of urethra in man?

Q.

Differentiate between osmo regulation and excretion

Q. Dialysis fluid contains all the constituents of the plasma except _______ .

1. urea
2. water
3. carbon dioxide
4. glucose

Q.

Which of the following blood vessels carry blood containing excretory substances into the kidney ?

1. Renal artery

2. Renal vein

3. Renal capillary

4. None of these

Q.

If a patient is put on dialysis, he is most likely suffering from a severe ailment of the :
(a) circulatory system
(b) respiratory system
(c) excretory system
(d) digestive system

Q. A person suffering from very low blood pressure passes no urine, why? What suggestions would you offer for the removal of waste products from the blood in such a situation? [4 MARKS]

Q.

Choose the odd one from each of the following:

Urethra, uterus, urinary bladder, ureter.

Q.

(a) What job is done by the kidneys ?
(b) What do kidneys excrete ?
(c) What is the name of the tubes which connect the kidneys to bladder ?
(d) What does the bladder in our body do ?

Q.

With which human organ systems (or human systems) are the following associated ?
(i) vena cava
(ii) glomerulus
(iii) alveoli
(iv) villi

Q.

Explain why removal of faeces or undigested food from the body is not an example of excretion? [3 MARKS]

Q.

Given alongside is the figure of certain organs and associated parts in the human body. Study the same and answer the questions that follow :

(a) Name all the organ-systems shown completely or even partially.

(b) Name the parts numbered 1 to 5.

(c) Name the structural and functional unit of the part marked '1'.

(d) Name the two main organic constituents of the fluid that flows down the part labelled '3'.

(e) Name the two major steps involved in the formation of the fluid that passes down the part labelled '3'.

Q.

Name the following :

(a) The organ which produces urea.

(b) The outer region of the kidney containing the Bowman's capsule.

(c) The tuft of capillaries inside the Bowman's capsule.

(d) The part of kidney tubules where the term urine is first used for the fluid in it.

(e) The vein in which urea concentration is maximum.

Q.

Is urea a protein?

Q.

Given below are two sets (a and b) of five terms each. Rewrite the terms in their correct order so as to be in logical sequence.

(a) Afferent arteriole, renal vein, capillary network, glomerulus, efferent arteriole.

(b) Renal artery, urethra, ureter, kidney, urinary bladder.

Q.

Urea is formed in

1. Kidney

2. Liver

3. Lungs

4. Spleen

Q. What are visceral organs??

Q. Name the following: [5 MARKS]
(a) The organ which produces urea.
(b) The outer part of the kidney containing the Bowman's capsule.
(c) The tuft of capillaries inside the Bowman's capsule.
(d) The part of kidney tubules where the term urine is first used for the fluid in it.
(e) The vein in which urea concentration is maximum.

Q.

The process of passing out urine is called _________.

Q. The control centre of the human body is the ________.

1. kidney
2. brain
3. spinal cord
4. liver

Q.

Some parts of the human excretory system are labeled in the image given below.

Identify them with the alternatives given in the options.

1. X- Urethra, Y- Urinary bladder, Z- ureter

2. X- Urethra, Y- Urinary bladder , Z- urinary bladder

3. X- Ureter, Y- Urinary bladder, Z- Urethra

4. X- Ureter, Y- Urinary bladder, Z- Urethra

Q. What is excretion? Give names of excretory organs.