Excretory Products and their Elimination Test

Result

Excretory Products and their Elimination Test - 17

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Angiotensinogen is a protein produced and secreted by the

A
Macula dense cells

B
Juxtaglomerular (JG) cells

C
Endothelial cells

D
Liver cells

Solution

Angiotensinogen is a plasma protein produced and secreted by liver cells. It is a sole precursor of all angiotensin peptide. Juxtaglomerular cells secrete renin which acts on angiotensinogen to release angiotensin I and then it is converted to angiotensin II by the action of enzyme angiotensin-converting enzymes.
So, the correct answer is 'Liver cells'.
Question 2
1 / -0

Juxtaglomerular cells of the renal cortex synthesise a hormone called

A
Urochrome

B
Renin

C
ADH

D
Oxytocin
Question 3
1 / -0

ADH acts on the

A
Collecting tubule of kidney

B
Loop of Henle

C
Collecting ducts of testes

D
None of the above

Solution

ADH acts in the kidney to regulate the volume and osmolarity of the urine. Specifically, it acts in the distal convoluted tubule (DCT) and collecting ducts (CT) cells. Hence, Option A is the correct option.
Question 4
1 / -0

The main function of Henle’s loop is

A
Conservation of water

B
Filtration of blood

C
Formation of urine

D
Passage of urine

Solution

The nephron is the structural and functional unit of the kidney. The body of the nephron is divided into renal corpuscle, proximal convoluted tubule ( PCT), Henle's loop and distal convoluted tubule( DCT). The primary function of the Loop of Henle is the recovery of water and sodium chloride from the filtrate. Hence function of Loop of Henle is conservation of water.
So, the correct answer is 'Conservation of water'.
Question 5
1 / -0

We can produce concentrated/dilute urine. This is facilitated by a special mechanism. Identify the mechanism.

A
Reabsorption from PCT

B
Reabsorption from collecting duct

C
Reabsorption/secretion in DCT

D
Counter-current mechanism in Henle’s loop and vasa recta

Solution

The countercurrent mechanism system is a mechanism that expends energy to create a concentration gradient. It helps to concentrate the filtrate which occurs in loop of Henle and vasa recta in the medulla region of the kidney.