Question

Which is a ductless gland?

• A. Gastric
• B. Lacrimal
• C. Thyroid
• D. Salivary

Answer 1

The correct option is C

Thyroid

The correct option is C.

Explanation of the correct option:

1. The ductless glands have no ducts and hence they secret their secretions directly to the blood.
2. The secretions are also called hormones.
3. Thyroxin and calcitonin are produced by the thyroid gland, which is an endocrine gland.

Explanation of the incorrect options:

Option A:

1. Exocrine glands include the gastric glands.
2. The glands secrete a hormone called gastrin.
3. The gastrin hormone controls gastric activity.

Option B:

1. Lacrimal gland is an exocrine gland.
2. These glands are present within the orbit of the eye and their secretions are commonly called tears.
3. These tears cleanse the eye and also protect the eye from dust or any foreign objects

Option D:

1. The salivary gland is an exocrine gland in the mouth.
2. This gland helps in digestion of the food, especially carbohydrates.
3. The salivary amylase helps in the carbohydrate breakage.
4. Also, it moistens the food and helps the food to be digested easily.

Final answer:

The ductless gland is a Thyroid gland.