(Science: endocrinology) a naturally occuring substance secreted by specialised cells that affects the metabolism or behaviour of other cells possessing functional receptors for the hormone.
General term for any extracellular substance that induces specific responses in target cells. s coordinate the growth, differentiation, and metabolic activities of various cells, tissues, and organs in multicellular organisms.
Hormones of the Kidney, Skin, and Heart
The human kidney secretes two hormones:
Calcitriol (1,25[OH]2 Vitamin D3)
as well as the enzyme renin.
Erythropoietin (EPO) ...
a chemical substance that is secreted by one organ and produces specific effects elsewhere
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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A chemical messenger produced by plant and animal cells or glands and transported through body fluids, blood or sap, to target cells in which it induces a specific reaction. eg.
Nerves, s and homeostasis
6.5.1 State that the nervous system consists of the central nervous system (CNS) and peripheral nerves, and is composed of cells called neurons that can carry rapid electrical impulses.
Thyroid hormones function in development, bioenergetics, and homeostasis.
A is a chemical that affects the ways in which an organism functions; it is produced in one part of the plant (or animal) body but affects many other parts of the body as well.
A hormone is any chemical produced in one part of the body that has a target elsewhere in the body. Plants have five classes of hormones. Animals, especially chordates, have a much larger number.
A is a chemical that's released by one cell or part of a body and it travels to some target cell, where a receptor protein will bind to that and trigger off some change within the cell of the receiving cell.
Hormones are just one of the tools used to send messages to the various parts of the body. They are usually small molecules made by a gland. They are secreted following a suitable stimulus and transported in the blood.
Most of the molecules that enable signalling between the cells or tissues within an individual animal or plant are known as "s." -initiated signal transduction takes the following steps: ...
hormones Chemical substances that are produced in the endocrine glands and travel in the blood to target organs where they elicit a response.
Secreted in response to presence of food in particular region of gut
s travel in blood to glands / in glands, stimulate secretion of digestive juices
GASTRIN stimulates exocrine glands in stomach to release gastric juice ...
[Gk. hormaein, to excite]
One of many types of circulating chemical signals in all multicellular organisms that are formed in specialized cells, travel in body fluids, ...
Estrogen increases the risk of endometrial cancer but progesterone reduces the risk.
Hormones exert many of their effects by forming transcription factors.
s /HORE-moans/ n. Circulating molecules that serve as signals for particular body processes to occur by interacting with target cells.
hormones biochemical substances produced within plant or animal cells, or glands, that exert a particular effect.
one of the body's messenger molecules which affects the functioning of some other area of the body
(hormon = to excite)
Humerus the bone in the upper arm
(humer = the shoulder) ...
Hormones also affect mature adults. Males and females have receptors for estrogens, progesterone, and androgens in various tissues.
regulation, nurturing behavior, pregnancy, sensory processes
Dopamine and another neurotransmitter called serotonin are released by just a small number of neurons in the brain.
hormone 1. An organic molecule synthesized by a plant that exerts, even in low concentrations, profound regulation of growth and/or development. 2.
The released by the area of the brain known as the hypothalamus beginning at the onset of sexual maturity in both males and females is:
follicle-stimulating (FSH) ...
a. are enzymes
b. act on all cells in which they come in contact
74. Which of the following are both exocrine and endocrine glands?
d. thyroid ...
- A plant used by humans as a drug to treat skin infections
A peptide hormone secreted by the islets of Langerhans of the pancreas that regulates the level of sugar in the blood.
Insulin a involved in the control of blood glucose
Interferon a protein molecule that prevents the replication of viruses
Interspecific competition competition for resources that occurs between members of different species ...
Human growth hormone (HGH, somatotrophin). A protein produced in the pituitary gland that stimulates the liver to produce somatomedins, which stimulate growth of bone and muscle.
The core tool used by the endocrine system is a compound called a . Your body uses dozens of s to regulate your growth, digestion, body temperature, and glucose metabolism (to name a few).
second messenger systems: Systems in which an intracellular signal is generated in response to an intercellular primary messenger such as a hormone or neurotransmitter.
See also: Cells, Organ, Hormones, Protein, Trans