Respuesta :
Answer:
In endocrinology, a target cell /tissue/organ is the one which is meant to be affected by a hormone produced by another cell of an endocrine organ. For example, TSH (thyroid stimulating hormone) secreted by pituitary gland effects the thyroid gland.Here, thyroid cells are target cells.
Explanation:
- The endocrine system is a control system of ductless glands that secrete the hormones that circulate within the body via the blood stream to affect distant cell within specific organ.
- There are two types of Hormone: a) steroidal b) Non-steroidal.
- Hormones regulate metabolism and energy balance; contraction of smooth and cardiac muscle fibres;glandular secretion; some immune activities; Controls growth and development.
- Some examples of hormone are:
a) Growth hormone, secreted by anterior pituitary controls growth.
b)Oxytocin secreted by posterior pituitary stimulates uterine muscle contraction and release of milk through mammary glands.
c) Thyroxine secreted by thyroid gland effects all tissue and increases metabolic rate, regulates growth and development.
- There are several such hormones which are secreted at some part of the body but are capoable of affecting a distant body part.
