Question

In: Anatomy and Physiology

Jeremy's trainer should have taken a physiology class. If he had, he would know that the...

Jeremy's trainer should have taken a physiology class. If he had, he would know that the use of steroids (in addition to other problems) actually increases_____________________, which is counterproductive to improving bone density.

a. testosterone

b. estrogen

c. calcitonin

d. parathyroid hormone

Expert Solution

Answer ----- (D) parathyroid hormone

Parathyroid is regarded as the counterproductive to improving bone density as because parathyroid glands release parathyroid hormone which makes the osteoclast break and releases the calcium from bones into blood.

Parathyroid hormone is the hormone which is secreted from the para thyroid glands which are situated in the neck and are found behind the thyroid gland , these are very small glands.

Parathyroid glands are there to secret the parathyroid hormones which are very useful in maintaining the blood calcium level in the body for the bone health and also they use to excrete more phosphate from the body.

The over action of the PTH is called as hyperparathyroidism.

And the low level of PTH in body is called hypoparathyroidism.

When there is low level of PTH in the body there is the decrease in the release of calcium from the bones because on an normal condition PTH works on the bones and makes the release of calcium stock from the bones and also enhances the calcium absorption from the intestine from food.

So parathyroid hormone is the hormone which affects the bone density if increased in the blood in high level.

And by the pth increases in the blood muscles and bones gets weak.

So the right answer is D parathyroid hormone.

Calcitonin acts against the parathyroid hormone as it interfere with the breakage of the osteoblast and calcium loss from the bones so it can't be right answer.

And testosterone is the hormone which works via growth hormone and improves the bone density in the body so this is also a wrong answer.

While estrogen also not related directly to this.

Steroids have effect on the bone density and they can cause osteoporosis they indirectly also increases the parathyroid hormone which is counterproductive for the improvement of bone density.

Thank you good wishes do up vote

Sydney Mullin answered 1 year ago

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