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Chapter 9: The human Body: Structure and Functioning
Terms in this set (19)
The study of body structure
The study of how living organisms function normally, including such processes as nutrition, movement, and reproduction
Unhealthy function in an individual body system or an organ due to a disease
When the heart music is contracting and ejecting blood from the chambers of the heart; the pressure is at the highest point in a normal heart
When the heart muscle is relaxed and the chambers are filling with blood; the pressure is at the lowest point in a normal heart
An instrument for measuring blood pressure. Sphygmomanometer are available as a mercury column, a gauge with a dual face, and an electronic device with a digital display. A sphygmomanometer consists of a measuring unit attached to a cuff that is wrapped around the upper arm and inflated to constrict the arteries.
To form and give off
The hydrogen ion concentration in a solution/fluid. The lower the pH, the more acidic the solution and the greater the hydrogen ion concentration; a pH of 7.4 is considered to be normal for blood
A state of unresponsiveness to a specific antigen or group of antigens to which a person is normally responsive. Immune tolerance is achieved under conditions that suppress the immune reaction and is not just the absence of an immune response.
A substance that is capable of causing the production of an antibody
A misdirected immune response that happens when the body attacks itself.
The process whereby ingested food is broken up into smaller molecules by chemical or mechanical means.
Waves of involuntary muscular contractions in the digestive tract. In the stomach, this motion mixes food with gastric juices, turning it into a thin liquid called chyme.
The mental process of becoming aware of or recognizing an object or idea.
A structure on the surface of a cell (or inside a cell) that selectively receives and binds a specific substance.
Reproductive organs; testes in the male, and ovaries in the female. Gonads function to produce reproductive cells and sex hormones.
The internal secretion of substances into the systemic circulation (bloodstream)
Glands that have no ducts; their secretion are absorbed directly into the blood.
A chemical substance produced in the body that controls and regulates the activity of certain cells or organs. Usually, it is a chemical made by a gland for export to another part of the body; it is not active at its site of synthesis.
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