Tag: biology

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Multiple choice biology digestive system of human digestive glands liver pancreas

Match the columns and find the correct choice.

a Kupffer's cells p Islet of Langerhans
b $\beta$-cells q Liver sinusoids
c Brush border cells r Thyroid gland
d Paneth cells s Proximal convoluted tubule
t Small intestine

  1. a-s, b-t, c-p, d-q

  2. a-r, b-, c-s, d-q

  3. a-r, b-t, c-s, d-p

  4. a-q, b-p, c-s, d-t
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Kupffer cells are found in liver sinusoids (a-q). Beta-cells are in the Islets of Langerhans (b-p). Brush border cells are in the small intestine (c-t). Paneth cells are also in the small intestine (d-t). Note: The provided option D matches a-q and b-p, which are correct.

Multiple choice biology digestive system of human digestive glands liver pancreas

Which one is both exocrine ad endocrine?

  1. Liver

  2. Pineal

  3. Adrenal

  4. Pancreas
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pancreas is a heterocrine gland, meaning it has both exocrine functions (secreting digestive enzymes) and endocrine functions (secreting hormones).

Multiple choice biology digestive system of human digestive glands liver pancreas

Which one of the following is not secreted by pancreas

  1. Insulin

  2. Glucagon

  3. Renin

  4. Somatostatin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Renin is an enzyme secreted by the juxtaglomerular cells of the kidney, not the pancreas. Insulin, glucagon, and somatostatin are all produced by the endocrine pancreas.

Multiple choice biology digestive system of human digestive glands liver pancreas

Growth hormone is secreted by

  1. Acidophilic $\alpha$ - cells
  2. Acidophilic $\beta$ - cells
  3. Basophilic $\alpha$ - cells
  4. Basophilic $\beta$ - cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Pituitary gland has two parts; adenohypophysis and neurohypophysis. Adenohypophysis has two types of cells, chromophobe cells and chromophil cells. Chromophil cells are divided into acidophilic or alpha cells and basophilic or beta cells depending upon whether they stain with acidic or basic dyes.
Growth hormone (GH) is secreted from acidophilic cells i.e. alpha cells (α) of anterior pituitary. It stimulates body growth and metabolism.
So, the correct answer is 'Acidophilic αα - cells'.
Multiple choice biology digestive system of human digestive glands liver pancreas

Alloxan treatment destroys 

  1. STH cells

  2. Sertoli cells

  3. Leydig's cells
  4. $\beta$- cells of islets of Langerhans
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. STH or somatotropin hormone is known as growth hormone and stimulates body growth and carbohydrate, protein, fat metabolism.
B. Sertoli cells are part of seminiferous tubules and help in spermatogenesis (production of sperms from germ cells) as they provide nourishment to the developing sperms.
C. Leydig cells, also known as interstitial cells are present in the testis near seminiferous tubules. They secrete testosterone hormone which helps in the development of secondary sexual characteristics in males.
D. ββ-cells of islets of Langerhans are part of pancreas and secrete insulin hormone which regulate blood glucose levels.
Alloxan is a toxic analogue of glucose which destroys insulin producing cells of pancreas i.e. ββ-cells of islets of Langerhans.
So, the correct answer is 'ββ-cells of islets of Langerhans'.