Parts of the Excretory System

Q.

What nitrogenous waste is removed by the kidneys?

Q. The triangular region of the internal urinary bladder formed by the opening of the ureter and the urethra is known as

1. Tetragone
2. Digone
3. Pentagone
4. Trigone

Q.

Which is the largest excretory organ in the human body?

Q.

The dotted appearance of the cortex of the kidney is due to

1. Henle's loop.
2. collecting duct.
3. Malpighian body.
4. Malpighian tubules.

Q. Average quantity of urea excreted daily by humans per day is

Q. Urinary bladder is lined by

1. transitional epithelium
2. simple squamous epithelium
3. simple cuboidal epithelium
4. simple columnar epithelium

Q.

Explain the role of glomerulus of nephron in the formation of urine.

Q.

Medulla of both the kidneys opens into a funnel-shaped cavity called:

1. uriniferous tubules

2. renal pelvis

3. ureter

4. none of these

Q. Juxta glomerular apparatus is a special sensitive region formed by cellular modifications in the:

1. DCT & efferent arteriole at point of their contact
2. DCT & afferent arteriole at point of their contact
3. PCT & afferent arteriole at point of their contact
4. PCT & efferent arteriole at point of their contact

Q.

The process of removal of metabolic wastes from the body is known as —————.

Q.

Glomerulus receives the blood through

1. Efferent arteriole

2. Afferent arteriole

3. Vasa recta

4. Renal vein

Q.

What do you mean by organ system level of organization? List the organs of the excretory system.

Q. Which of the following statements is incorrect?

1. Vasa recta carries glomerular filtrate from distal convoluted tubule to the collecting duct.
2. Glomerular filtrate is protein free plasma.
3. Counter-current flow of blood in the vasa recta helps to retain the reabsorbed sodium in the renal medulla.
4. Glomerular filtrate in Bowman’s capsule is isotonic to the plasma.

Q. Different types of excretory structures and animals are given below. Match them appropriately and mark the correct answer from among those given below.

$\begin{array}{cccc}\text{A}& \text{Protonephridia}& i& \text{Prawn}\\ \text{B}& \text{Nephridia}& ii& \text{Cockroach}\\ \text{C}& \text{Malpighian tabules}& iii& \text{Earthworm}\\ \text{D}& \text{Green gland or Antennal gland}& iv& \text{Flatworms}\end{array}$

1. A-iv, B–iii, C–ii, D–i
2. A–iii, B–i, C–iv, D–ii
3. A–iii, B–iv, C–ii, D–i
4. A–iii, B–i, C–ii, D–iv

Q. The tubule which carries urine from the kidney to the urinary bladder is called

1. Malpighian tubules
2. Urethra
3. None of the above
4. Ureter

Q.

Norepinephrine is secreted by:

1. Adrenal cortex

2. Thymus

3. Adrenal medulla

4. Nephric tubules of kidney

Q.

Give any one function of the urinary bladder.

Q. The trigone is

1. a urine filled cavity within the kidney
2. a tunic of the ureter
3. a muscular sphincter at the neck of the urinary bladder
4. a smooth connective tissue region in the unnan, bladder

Q. Which of the following is/are H–shaped excretory organ(s) present in roundworms?

1. Nephridium
2. Renette cells
3. Protonephridia
4. Coxal glands

Q. Choose the odd word out from the sets given below

$\left(i\right)$ Kidney, liver, skin, lungs, pancreas

Q. Duct that drains urine out of the urinary bladder is known as

1. Urethra
2. Ureters
3. Urinary bladder
4. Trigone

Q.

Match the excretory functions of Section I with the parts of the excretory system in Section II. Choose the correct combination from the answers given.
$\begin{array}{cc}SectionI& SectionII\\ \left(Functions\right)& \left(Partsofexcretorysystems\right)\\ A.Ultrafiltration& 1.Henl{e}^{\prime }sloop\\ B.Concentrationofurine& 2.Ureter\\ C.Transportofurine& 3.Urinarybladder\\ D.Storageofurine& 4.Malpighiancorpuscle\\ & 5.Proximalconvolutedtubule\end{array}$

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

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

3. A = 5, B = 4, C = 1, D = 3

4. A = 5, B = 4, C = 1, D = 2

Q.

Question 25.4

Correct the following statements by replacing the term underlined.

The pineal gland is located on the anterior part of the kidney.

Q. The amount of urine output per day by normal human being is

1. 4-5 L
2. 3-4 L
3. 0.5-0.75 L
4. 1-1.8 L

Q.

What is the function of the human excretory system?

Q.

Kidneys perform all the functions except

1. Filtration of blood
2. Regulation of B.P
3. Secretion of antibodies
4. Regulation of pH of body fluids

Q.

The removal of the wastes from the body is known as?

Q. ______________ is the sudden loss of kidney’s function due to disease, injury or accident.

1. Renal calculi
2. Chronic renal failure
3. Acute renal failure
4. None of the above

Q. Explain the functional correlation of circulatory system with respiratory, digestive, and excretory system.

Q. Explain excretion in human beings.