(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. Hormones 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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Hormones - Biology Encyclopedia forum
Hormones, Plant » ...
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, hormones 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.
A hormone 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 hormone 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 hormone and trigger off some change within the cell of the receiving cell.
(ACTH) A hormone of the anterior pituitary that stimulates the adrenal cortex to secrete hormones.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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 "hormones." Hormone-initiated signal transduction takes the following steps: ...
[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 /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.
Hormone 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) ...
(4) Hormones (see also hormone)
(a) Unlike local regulators, hormones are chemical signals that diffuse systemically (e.g.
Hormones also affect mature adults. Males and females have receptors for estrogens, progesterone, and androgens in various tissues.
hormone 1. An organic molecule synthesized by a plant that exerts, even in low concentrations, profound regulation of growth and/or development. 2.
The hormone 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 hormone (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 hormone used by humans as a drug to treat skin infections
Insulin a hormone 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 ...
A female sex hormone secreted by the corpus luteum that, in conjunction with estradiol, functions to prepare and maintain the uterine mucosa for the reception, implantation, and development of a fetus if fertilization occurs.
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 hormone. Your body uses dozens of hormones 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.
Jenkins V, Shilling V, Fallowfield L, Howell A, Hutton S: Does hormone therapy for the treatment of breast cancer have a detrimental effect on memory and cognition? A pilot study. ...
A disease associated with the absence or reduced levels of insulin, a hormone essential for the transport of glucose to cells. Dideoxynucleotide (didN).
Spontaneous oscillations of intracellular calcium and growth hormone (GH1) secretion. J. Biol. Chem. 263:9628-9685, 1988.
Yannelli, J.R., J.A. Sullivan, G.L. Mandell and V.H. Engelhard.
Response element: By definition, a "response element" is a portion of a gene which must be present in order for that gene to respond to some hormone or other stimulus. Response elements are binding sites for transcription factors.
Diabetes mellitus is a disease characterized by an inability to make or use the hormone insulin. Insulin is needed by cells to metabolize glucose, the body's main source of chemical energy.
These glands each produce one or more hormones. These hormones are released into the bloodstream via small tubes called ducts. Once in the bloodstream, these hormones effect every cell they come in contact with, telling them to do something.
competentia - meeting together, agreement, symmetry] The ability or state which renders a cell capable of responding to an inductor or hormone The dorsal ectoderm of amphibian embryos displays competence for neural induction. [P.D.
Lipids are the masters of energy storage, and some have important structural roles or serve as hormones, among other things.
Endocrine signaling (hormone signaling) occurs across long distances in the body.
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The endocrine system is composed of the glands of the body that secrete hormones to be carried by the blood to essentially every cell. This communication system is slower than the nerve communication, but more pervasive.
chorionic somatomammotropin - aka placental lactogen, a hormone that promotes maternal breast development during pregnancy.
chromosomal puff - expanded region of a polytene chromosome indicative of active messenger RNA synthesis.
Examples are hormones, enzymes, and antibodies.
Any of a class of 20 molecules that are combined to form proteins in living things.
This internal secretion of the thyroid is supposed to contain a specific hormone which acts as a chemical stimulus to other tissues, increasing their metabolism.
endocrine cell - specialized animal cell that secretes a hormone into the blood; usually part of a gland, such as the thyroid or pituitary gland ...
Physiology: carbohydrates, catalyst, enzyme, glycolysis, hormone, lipid, metabolism, protein, respiration, Physiology ...
Golgi apparatus -- Eukaryotic organelle which package cell products, such as enzymes and hormones, and coordinate their transport to the outside of the cell.
Important proteins for living beings are enzymes, hormones, Collagen, Chlorophyll and Hemoglobin.
CELLULAR LEVEL ...
Others function as receptors, which bind information-providing molecules, such as hormones, and transmit corresponding signals based on the obtained information to the interior of the cell.
This groundbreaking scientific film documents futuristic research on plant sensory systems and the environmental significance of understanding what makes plants grow, through the impact of gravity, electrical signals and hormones on plants.
determined by the base sequence of nucleotides in the gene coding for the protein. Proteins are required for the structure, function, and regulation of the bodys cells, tissues, and organs, and each protein has unique functions. Examples are hormones, ...
These lizards evolved from sexual lizards whose hormones were aroused by sexual behavior. Now, although the sexual mode of reproduction has been lost, the means of getting aroused (and hence fertile) has been retained.
Examples are hormones, enzymes, and antibodies.
Purine A nitrogen-containing, single-ring, basic compound that occurs in nucleic acids. The purines in DNA and RNA are adenine and guanine.
Examples are hormones, enzymes, and antibodies. (ORNL)
Proteins expressed by a cell or organ at a particular time and under specific conditions. (ORNL)
See also: Cells, Organ, Protein, Hormones, Trans