Which of the following adrenal hormones is secreted by chromaffin cells? A. Cort

Question

Which of the following adrenal hormones is secreted by chromaffin cells? A. Cortisol B. Aldosterone. C. Epinephrine D. Androgens. E. Estrogens. In primary hyposecretion of thyroid hormones A. Levels of thyroid hormones the blood decrease B. Levels of TRH in the blood decrease. C Levels of TSH in the blood decrease. D. All of the above are true. E. None of the above is true The important feature of the target cells that allows them to respond to hormones A. Proximity to the source of the hormone, B. Type of nerve supply of the target cell. C. Type of nerve supply to the target cell. D. Presence of appropriate receptor molecules. E. Surface area the target cell membrane. Which of the following is example of permissiveness? A. Glucagon increases blood glucose levels, and insulin decreases blood levels. B. Glucagon, epinephrine, and cortisol all increase blood glucose levels. C. Estrogen stimulates synthesis of progesterone receptors in the endometrium. D. All of the above. E. None of the above. The placenta not only serves as an organ of exchange but also secretes all of the following hormones, EXCEPT A. Prolactin. B. Chorionic gonadotropin C. Placental lactogen D. Progesterone E. Estrogen

Explanation / Answer

Answer: 5. Adrenal medullas chromaffin cells are controlled by the presence of splanchnic nerve, they innervate the cells to secrete adrenaline (epinephrine), noradrenaline (norepinephrine), enkephaline, some dopamine and few other hormones into the blood streams. From the answer choices given we have to choose C.

6. In primary hyprosecretion of thyroid hormone: primary hyprosecretion comes when the endocrine glands function normally. Examples of primary hyposecretion include

(1) Adrenal cortex destruction, cortisol secretion decreases, (2) If Iodine become deficient in diet it leads to decreased thyroid secretion, (3) Other causes like infections, toxic chemical affects etc.

From the answer choice we need to choose- In this situation the TSH secretion from anterior pituitary is low, A. the thyroid hormone in the blood decreases,

Primary hyposecretion also affects the secondary issue, there the Thyrotropin-releasing hormone (TRH), also called thyrotropin-releasingfactor (TRF) or thyroliberin, help in releasing the TSH and prolactin from the anterior pituitary. These affects also is a releasing hormone, produced by the hypothalamus, which stimulates the release of thyrotropin (thyroid-stimulatinghormone or TSH) and prolactin from the anterior pituitary. It is a tropic, tripeptidalhormone.

Finally we need to say that choice D. is correct.

7. The important features of the target cells that allows them to respond to hormones is the: Hormones are effective to various cells that display receptors specific to them, even cells can show many receptors to act on them.

This the right answer choice is the presence of appropriate receptors molecules.

8. Example of permissiveness: Hormones shows permissiveness, this is situation where a hormone cannot exert its whole effect without the help and support of another hormone. A. it is clearly a permissive effect, B. Answer choice is right, as cortisol helps increasing the glucagon levels in liver, they help it to secrete and work on blood sugar levels, and also it works with epinephrine. C. Answer choice is right too,

The correct answer choice is D.

9. Placental hormone secretion: Placenta, a temporary organ produced by the mother uterus and it helps secreting various hormones after the eggs are fertilized and they are placed. In human's they are known as human gonadotrophic hormones. They secrete Human Chorionic gonadotropin, placental lactogen, progesterone and estrogen, except the A. Prolactin.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.