Parts of the Excretory System

Q. Differentiate between afferent and efferent arteriole. [4 MARKS]

Q.

The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.

Parts indicated by the guidelines 1 to 8 are as follows :

1. Afferent arteriole from the renal artery;

2. Efferent arteriole

3. Bowman's capsule,

4. Glomerulus ;

5. Proximal convoluted tubule with blood capillaries;

6. Distal convoluted tubule with blood capillaries;

7. Collecting tubule;

8. U-shaped loop of Henle.

Study the diagram and answer the questions that follow;

(a) Where does ultrafiltration take place?

(b) Which structure contains the lowest concentration of urea?

(c) Which structure contains the highest concentration of urea?

(d) Which structure (normally) contains the lowest concentration of glucose?

(e) Where is most water reabsorbed?

Q.

Name the excretory organs of flatworms, prawn and cockroach.

Q.

Column of Bertini in the kidneys of mammals is formed as an extension of_____.

1. Pelvis in the ureter.

2. Cortex in the pelvis.

3. Medulla in the pelvis

4. Cortex in the medulla.

Q.

Green glands are excretory structures found in_________

1. Spiders

2. Moth

3. Scorpions

4. Prawn

Q.

Blood entering kidney for purification is oxygenated or deoxygenated

Q.

Are humans ureotelic?

Q. Malpighian tubules are:

1. Excretory organs of insects
2. Excretory organs of annelids
3. Respiratory organs of insects
4. Respiratory organs of annelids

Q.

Which one of the following is not a part of the excretory system?

1. Large intestine

2. Bladder

3. Ureter

4. Kidney

Q.

What is the main function of the Excretory System?

1. Neuron

2. Alveoli

3. Urethra

4. Nephron

Q.

Choose the correct path of urine in our body:

1. Kidney → ureter → urethra → urinary bladder

2. Kidney → urinary bladder → urethra → ureter

3. Kidney → ureters → urinary bladder → urethra

4. Urinary bladder → kidney → ureter → urethra

Q.

Which has more urea from the renal artery and renal vein?

Q.

The renal vein carries blood __________ .

1. Into the kidney

2. Towards liver

3. Away from kidney

4. Towards bladder

Q. Urine enters the ureter and then it is stored in gallbladder? Why?

Q.

Which part of the excretory system is responsible for the purification of blood by filtering out the waste from blood?

1. Kidneys

2. Brain

3. Liver

4. Urinary bladder

Q.

In mammals, the urinary bladder opens into :-

1. Uterus

2. Urethra

3. Vestibule

4. Ureter

Q.

Label the parts of the nephron.

1. 1-Thin descending limb 2-Thin ascending limb 3-Thick ascending limb 4-Distal convoluted tubule

2. 1-Distal convoluted tubule 2-Thin ascending limb 3-Thick ascending limb 4-Thin descending limb

3. 1-Thick ascending limb 2-Thin ascending limb 3-Distal convoluted tubule 4-Thin descending limb

4. 1-Thick ascending limb 2-Thin descending limb 3-Thin ascending limb 4-Distal convoluted tubule

Q. This question consists of two statements, Assertion and Reason. While answering this question you are required to choose any one of the following five responses.

Assertion: In vertebrates, the liver is also referred as an accessory excretory organ.

Reason: Liver helps kidneys in the secretion of urine.

Q.

Ureotelism is found in

1. Aquatic insects

2. Tadpoles

3. Birds

4. Mammals

Q.

What are the parts of the excretory system?

Q.

The ureters arise from the cortex of the kidney.

1. True
2. False

Q. The figure shows the human excretory system with it's structures labeled A to D.

Select option which correctly identifies them and gives their characteristics and/or functions.

1. A - Adrenal gland - Located at the anterior part of kidney.

2. B - Pelvis - Broad funnel-shaped space inner to hilum, directly connected to the loop of Henle.

3. D - Cortex - Outer part of the kidney and do not contain any part of nephrons.

4. C - Medulla - Inner zone of kidney. It contains complete nephrons.

Q. Which of these is not an accessory excretory organ?

1. Heart
2. Skin
3. Intestine
4. Liver

Q. What are Anal spinchter?

Q. Differentiate between Ureter and Urethra based on their function.

Q.

How is urine produced?

Q.

Match the excretory functions with the parts of the excretory system.

$\begin{array}{cc}Functions& Partsofexcretorysystems\\ A.Ultrafiltration& 1.Henl{e}^{\prime }sloop\\ B.Concentrationofurine& 2.Ureter\\ C.Transportofurine& 3.Urinarybladder\\ D.Storageofurine& 4.Malpighiancorpuscle\end{array}$

1. A = 4, B =1, C = 2, D = 3

2. A = 4, B = 3, C = 2, D = 1

3. A = 2, B = 4, C = 1, D = 3

4. A = 3, B = 4, C = 1, D = 2

Q.

Name the main organs of renal excretory system of human beings in their correct sequence.

Q. In annelids, excretory organs are ___ .

Q.

The diagram shows the outline of the human excretory system.

Identify X and it's function.

1. Urethra; To excrete urea

2. Nephron; To produce urea

3. Urinary bladder; To store urine

4. Ureters; To produce urine