Biology

Endocrine and Exocrine Glands

594 Questions

The endocrine and exocrine glands topic explores the human body's essential secreting structures, including the pituitary, thyroid, and salivary glands. Questions often focus on gland locations, their specific secretions, and crucial physiological functions. This subject is a core component of the general science syllabus across many highly competitive examinations.

Master endocrine glandsPituitary gland locationSalivary gland functionsThyroid and ductless glandsApocrine sweat glands

Endocrine and Exocrine Glands Questions

Multiple choice

In which of the following ducts is Sialolithiasis most common?

  1. Duct of parotid gland

  2. Duct of submandibular gland

  3. Duct of sublingual gland

  4. Duct of minor salivary glands
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sialolithiasis (also termed salivary calculi) is a condition where a calcified mass or sialolith forms within a salivary gland, usually in the duct of the submandibular gland.

Multiple choice

What is the sequence of zones in the adrenal cortex?

  1. Zona fasciculata - Zona glomerulosa - Zona reticularis

  2. Zona reticularis - Zona fasciculata - Zona glomerulosa

  3. Zona glomerulosa - Zona fasciculata - Zona reticularis

  4. Zona reticularis - Zona glomerulosa - Zona fasciculata
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct sequence.

Multiple choice

Where are chromaffin cells present?

  1. Adrenal cortex

  2. Adrenal medulla

  3. Islets of Langerhans

  4. Pituitary gland
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chromaffin cells are hormone-producing cells of the adrenal medulla.

Multiple choice

Where is the thymus gland located?

  1. On the ventral side of neck below the larynx

  2. On the floor of diencephalon

  3. Behind the sternum and between the lungs

  4. Closely associated with thyroid glands
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Thymus gland is located behind the sternum and between the lungs.

Multiple choice

Which gland is said to be responsible for myasthenia gravis?

  1. Pituitary

  2. Thymus

  3. Adrenal

  4. Hypothalamus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Thymus is said to be responsible for myasthenia gravis. It is believed that the thymus gland may give incorrect instructions to developing immune cells, ultimately resulting in autoimmunity and the production of the acetylcholine receptor antibodies, thereby setting the stage for the attack on neuromuscular transmission.

Multiple choice

Which of the following is a heterocrine gland?

  1. Parathyroid

  2. Salivary gland

  3. Pancreas

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

Pancreas is an endocrine gland. Islets of Langerhans in the pancreas are endocrine in nature and secrete the hormones insulin and glucagon. The exocrine part secretes digestive enzymes.