What is the target tissue for estrogen?
Estrogens have multiple effects on the growth and development of cells in their target tissues, including the uterus, ovary, breast, bone marrow and brain. The hormone regulates the transcription of diverse genes in these tissues via the estrogen receptor, a nuclear transcription factor.
What is the action of estrogen?
In addition to regulating the menstrual cycle, estrogen affects the reproductive tract, the urinary tract, the heart and blood vessels, bones, breasts, skin, hair, mucous membranes, pelvic muscles, and the brain.
What do target tissues do?
A target tissue in the endocrine system is the tissue that a particular hormone can exert an effect on.
What is a target tissue?
Definition: The biological tissue(s) most adversely affected by exposure to a chemical substance.
What is the role of estrogen in females?
In females, it helps develop and maintain both the reproductive system and female characteristics, such as breasts and pubic hair. Estrogen contributes to cognitive health , bone health, the function of the cardiovascular system , and other essential bodily processes.
What happens when estrogen drops?
Low estrogen levels can interfere with sexual development and sexual functions. They can also increase your risk for obesity, osteoporosis, and cardiovascular disease. Treatments have evolved over the years and become more effective.
How are hormones transported to their target organs?
The glands of the endocrine system secrete hormones directly into the extracellular environment. The hormones then diffuse to the bloodstream via capillaries and are transported to the target cells through the circulatory system.
What are target organs and tissues?
target organ. A tissue or organ upon which a hormone exerts its action; generally, a tissue or organ with appropriate receptors for a hormone.
What does a hormone do to a target organ?
A hormone is a chemical substance, produced by a gland and carried in the bloodstream, which alters the activity of specific target organs ….Hormones and nerves.
| Nervous | Hormonal | |
|---|---|---|
| Effectors | Muscles or glands | Target cells in particular tissues |
| Type of response | Muscle contraction or secretion | Chemical change |
How do hormones affect target tissues?
Hormones activate target cells by diffusing through the plasma membrane of the target cells (lipid-soluble hormones) to bind a receptor protein within the cytoplasm of the cell, or by binding a specific receptor protein in the cell membrane of the target cell (water-soluble proteins).
What are the three main functions of estrogen?
Estrogen contributes to cognitive health , bone health, the function of the cardiovascular system , and other essential bodily processes. However, most people know it for its role alongside progesterone in female sexual and reproductive health. The ovaries, adrenal glands, and fat tissues produce estrogen.
What do estrogen blockers do for females?
A substance that keeps cells from making or using estrogen (a hormone that plays a role in female sex characteristics, the menstrual cycle, and pregnancy). Estrogen blockers may stop some cancer cells from growing and are used to prevent and treat breast cancer.
What is the target organ of estrogen?
Estrogen and progesterone circulate in the bloodstream almost entirely bound to plasma proteins. Only unbound estrogen and progesterone appear to be biologically active. They stimulate the target organs of the reproductive system (eg, breasts, uterus, vagina).
What are the target organs of hormones?
A hormone is a chemical substance, produced by a gland and carried in the bloodstream, which alters the activity of specific target organs. An example of this is the release of the hormone adrenaline, which is released by the adrenal gland. One of its target organs is the heart, where it increases the heart rate.
What is target tissue growth hormone?
Human Growth Hormone (hGH) Target Tissues-Liver Principal Action-stimulates liver, muscle, cartilage, bone, and other tissues to secrete insulinlike growth factors (IGFs). IGFs promote body growth of body cells, protein synthesis, tissue repair, lipolysis, and elevation of blood glucose concentration.
A target tissue is a tissue or organ that is affected by a hormone. Another name for a target tissue is a target organ.