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Perspiration, also known as sweat, is the fluid secreted by sweat glands in the skin of mammals. [ 1 ] Two types of sweat glands can be found in humans: eccrine glands and apocrine glands. [ 2 ] The eccrine sweat glands are distributed over much of the body and are responsible for secreting the watery, brackish sweat most often triggered by ...
Cellular respiration. Typical eukaryotic cell. Cellular respiration is the process by which biological fuels are oxidized in the presence of an inorganic electron acceptor, such as oxygen, to drive the bulk production of adenosine triphosphate (ATP), which contains energy. Cellular respiration may be described as a set of metabolic reactions ...
Urinary water loss, when the body water homeostat is intact, is a compensatory water loss, correcting any water excess in the body. However, since the kidneys cannot generate water, the thirst reflex is the all-important second effector mechanism of the body water homeostat, correcting any water deficit in the body.
Adrenaline, also known as epinephrine, is a hormone and medication [ 10 ][ 11 ] which is involved in regulating visceral functions (e.g., respiration). [ 10 ][ 12 ] It appears as a white microcrystalline granule. [ 13 ] Adrenaline is normally produced by the adrenal glands and by a small number of neurons in the medulla oblongata. [ 14 ]
Parts-per-million cube of relative abundance by mass of elements in an average adult human body down to 1 ppm. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.
preparation of the body for mating, fighting, fleeing, and other activity. preparation of the body for a new phase of life, such as puberty, parenting, and menopause. control of the reproductive cycle. hunger cravings. A hormone may also regulate the production and release of other hormones.
Norepinephrine (NE), also called noradrenaline (NA) or noradrenalin, is an organic chemical in the catecholamine family that functions in the brain and body as a hormone, neurotransmitter and neuromodulator. The name "noradrenaline" (from Latin ad, "near", and ren, "kidney") is more commonly used in the United Kingdom, whereas "norepinephrine ...
Category. v. t. e. In physiology, a stimulus[ 1 ] is a change in a living thing's internal or external environment. This change can be detected by an organism or organ using sensitivity, and leads to a physiological reaction. [ 2 ] Sensory receptors can receive stimuli from outside the body, as in touch receptors found in the skin or light ...