Question

Assertion: Prolactin is also called ‘Milk ejection hormone’.
Reason: Prolactin stimulates the contraction of smooth muscles of mammary glands.

• A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
• B. If both Assertion and Reason are correct but the Reason is not the correct explanation of Assertion.
• C. If Assertion is correct but Reason is incorrect.
• D. If Assertion is incorrect but Reason is correct.
• E. Both the Assertion and Reason is incorrect.

Answer 1

The correct option is E

Both the Assertion and Reason is incorrect.

The correct option is (E):

Explanation of the assertion statement:

1. Oxytocin causes the ejection of the milk and hence it is also known as the milk ejecting hormone.
2. Prolactin is a hormone secreted by the anterior pituitary that helps in the production of milk in the mammary gland but it is not responsible for its ejection.

Explanation of the reason statement:

1. Oxytocin hormone is secreted by the posterior pituitary gland.
2. It induces contractions of the mammary gland muscles to help in the flow of stored milk from the mammary glands to the mouth of the suckling infant.

Final answer:

Both the Assertion and Reason are incorrect.