Question

The hormone that increases blood calcium levels and decreases its excretion in the kidneys is

• A. Parathormone
• B. Calcitonin
• C. Thyroxin
• D. Insulin

Answer 1

The correct option is A

Parathormone

The correct option is (A).

Explanation for correct option:

1. Parathyroid glands are responsible for the secretion of parathormone in the blood.
2. The parathormone regulates the blood calcium level by increasing it as it releases calcium from the bones.

Explanation for incorrect option:

Option B:

1. The thyroid gland is responsible for the release of calcitonin in the blood
2. It regulates the level of calcium in the blood when it's high and decreases it as per need.

Option C:

1. The thyroid gland is responsible for the release of thyroxine in the blood
2. It regulates digestion, and metabolism and helps in brain development.

Option D:

1. The islets of Langerhans located in the pancreas are responsible for the release of insulin in the body.
2. Insulin is responsible for the regulation of glucose in the blood.

Final answer:

Hence, the hormone that increases blood calcium levels and decreases its excretion in the Kidneys is Parathormone.