Question

Which is the smallest gland in the human body?

• A. liver
• B. pituitary-gland
• C. thyroid-gland
• D. pineal gland

Answer 1

The correct option is D

pineal gland

The correct option is D

Explanation of the correct option:

1. Based on the presence or absence of a duct gland, there are two kinds of glands, that is, exocrine and endocrine glands.
2. The endocrine glands are ductless, thus, they discharge their secretions directly into the blood like thyroid glands, pituitary glands, etc.
3. The smallest gland found in the body of a human being is the pineal gland.
4. It is situated at the dorsal side of the forebrain and originates from the embryo’s ectoderm.
5. The weight of a pineal gland is 150 milligrams.
6. The prime role of the pineal gland is to balance the rhythm of the body and secrete melatonin hormone.

Explanation of the incorrect option:

Option A:

1. The liver is the largest gland found in humans, it weighs around 1500 grams.
2. The liver withdraws toxins from the body, regulates blood clotting, maintains healthy blood sugar levels, and does several other essential functions.

Option B:

1. The pituitary gland is also called the master gland, it has a diameter of 1 to 1.5 cm and weighs around 0.5 grams.
2. It monitors the activities of the hormones secreted by other endocrine glands.

Option C:

1. The thyroid gland is located on either side of the trachea, that is, below the larynx.
2. It weighs around twenty-five to thirty grams in adults.
3. It performs a prime function in the growth, metabolism, and development of the human body.

Final answer: The smallest gland in the human body is the pineal gland.