Final answer:
All of the following are actions of vitamin D except: removing calcium from the blood for deposit in bone tissue (Option 1). Vitamin D mainly helps in calcium absorption from the intestine, reduces its excretion from the kidneys, and can promote the breakdown of bone tissue to regulate calcium levels in the blood.
Step-by-step explanation:
The question addresses the actions of vitamin D that are related to calcium metabolism and bone health. Among the given options, the action that is not an action of vitamin D is the first one: (1) a) removing calcium from the blood for deposit in bone tissue. Vitamin D's roles primarily include:
- Increase intestinal absorption of calcium, thus raising calcium levels in the blood.
- Promote the production of proteins responsible for calcium transport in the intestines to enhance calcium absorption.
- Facilitate the breakdown of bone tissue to release calcium into the blood when necessary.
- Reduce the excretion of calcium by the kidneys, allowing the body to retain more calcium.
The correct option that is not an action of vitamin D is (1) a) removing calcium from the blood for deposit in bone tissue.
Vitamin D is more closely involved with the mobilization and absorption of calcium rather than directly removing it for bone deposition.
That process is largely influenced by other factors and hormones, such as parathyroid hormone (PTH) and calcitonin, which work in conjunction with vitamin D.
Hence, the correct answer is Option 1.
The complete question is: All of the following are actions of vitamin d except question 10 options: 1) a) removing calcium from the blood for deposit in bone tissue. 2) b) increasing the expression of genes that produce intestinal calcium transport proteins. 3) c) promoting the breakdown of bone tissue to release calcium into the blood. 4) d) increasing the retention of calcium by the kidneys.