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Definition: anatomy
cutting open.
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Definition: physiology
is the study of how living organisms perform their vital functions.
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Definition: medical terminology
is the use of prefixes, suffixes, word roots, and combining forms to construct anatomical, physiological, or medical terms.
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Definition: gross anatomy
involves the examination of relatively large structures and features usually visible with the unaided eye.
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Definition: cytology
is the study of cellular structure and function
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Definition: cells
the simplest units of life
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Definition: tissues
groups of specialized cells and cell products that work together to perform specific functions.
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Definition: organs
groups of tissues
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Definition: human physiology
is the study of the functions of the human body.
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Definition: homeostasis
refers to the exsitence of a stable internal enviroment.
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Definition: negative feedback
is an initial stimulus produces a response that opposes the change in the original conditions. It is the primary mechanism of homeostatic regulation.
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Definition: positive feedback
is an initial stimulus produces a response that exaggerates or enhances the change in the original conditions, rather than opposing it.
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Definition: state of equilibrium
it exists when opposing processes or forces are in balance.
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Definition: abdominopelvic quadrant
one of four divisions of the anterior abdominal surface.
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Definition: abdominopelvic region
one of nine divisions of the anterior abdominal surface.
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Definition: CT (CAT)
also known as computerized axial tomography, is an imaging technique that uses x-rays to reconstruct the body's three-dimensional structure.
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Definition: disease
a malfunction of organ systems resulting from a failure of homeostatic regulation.
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Definition: DSA
also known as digital subtraction angiography, is a x-ray technique used to monitor blood flow through spefic organs using radiopaque dye.
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Definition: embryology
the study of structural changes during the first two months of development.
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Definition: histology
the study of tissues.
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Definition: MRI
also known as magnetic resonance imaging, is an imaging technique that employs a magnetic field and radio waves to portray subtle structural differences.
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Definition: PET scan
also known as positron emission tomography, is an imaging technique that shows the chemical functioning, as well as the structure, of an organ.
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Definition: radiologist
a physician who specializes in performing and analyzing radiological procedures.
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Definition: sign
a physical manifestation of a disease that can be measured and observed through sight, hearing, or touch.
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Definition: sprial-CT
a method of processing computerized tomography data to provide rapid, 3D images of internal organs.
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Definition: symptom
a patient's perception of a change in normal body function
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Definition: ultrasound
an imaging technique that uses brief bursts of high-frequency sound waves reflected by internal structures.
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Definition: x-rays
high-energy radiation that can penetrate living tissues.
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Definition: chemistry
is the science that deals with the structure of matter.
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Definition: matter
is anything that takes up space and has mass
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Definition: mass
in the amount of material in matter, is a physical property that determines the weight of an object in earth's gravitational field.
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Definition: atoms
the smallest units of matter.
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Definition: subatomic particles
composes an atom, which includes, but is not limited to protons, neutrons, and electrons.
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Definition: protons
similar in size to neutrons, but are postively charged.
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Definition: neutrons
similar in size to protons, but are electrically neutral.
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Definition: electrons
are lighter than protons and bear a negative electoral charge.
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Definition: element
is a pure substance composed of atoms of one only one kind.
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Definition: isotopes
are atoms of the same element whose nuclei contain the same number of protons, but different numbers of neutrons.
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Definition: mass number
the total number of protons plus neutrons in the nucleus
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Definition: radioisotopes
are isotopes that spontaneously emit subatomic particles or radiation from the nuclei, in measurable amounts.
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Definition: half-life
the time required for half of a given amount of the isotope to decay.
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Definition: covalent bonds
is when atoms can complete their outer electron shells by sharing electrons with other atoms.
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Definition: hydrogen bonds
are weak forces that act between adjacent molecules and between atoms within a large molecule.
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Definition: molecular weight
is the sum of the atomic weights of its component atoms.
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Definition: ph
is the measurement of acidity and basicity in a solution.
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Definition: neutral ph
a solution with a ph of 7; it contains equal numbers of hydrogen and hydroxide ions.
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Definition: acidic ph
a solution with a ph balance below 7; it contains more hydrogen ions than hydroxide ions.
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Definition: basic ph
a solution with a ph balance above 7; it contains more hydroxide ions than hydrogen ions
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Definition: steroid
are large lipid molecules that share a distinctive carbon framework.
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Definition: sex cell
also known as germ cells or reproductive cells, are either the sperm in males or the oocytes in females.
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Definition: somatic cells
all cells in the human body, with the exception of the sex cells.
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Definition: diffusion
the movement of solutes; direction is determined by relative concentrations.
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Definition: osmosis
the movement of water molecules toward solution containing relatively higher solute concentration
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Definition: hypotonic
water flows into cell; causing swelling and rupture
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Definition: hypertonic
water flows out of cell; causing dehydration and crenation
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Definition: endocytosis
is the process by which cells absorb molecules from outside the cell by engulfing them with their cell membrane.
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Definition: exocytosis
is the process by which cells directs the contents of secretory vesicles out of the cell membrane.
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Definition: mitosis
it seperates the duplicated chsomosomes of a celll into two identical nuclei.
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Definition: cancer
an illness caused by mutations leading to the controlled growth and replication of affected cells.
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Definition: benign tumor
a mass or swelling in which the cells usually remain within a connective-tissue capsule; rarely life threatening.
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Definition: dextran
a carbohydrate that cannot cross plasma membranes; commonly administered in solution to patients after blood loss or dehydration.
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Definition: DNA fingerprinting
identifying an individual on the basis of repeating nucleotide sequences in his or her DNA.
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Definition: invasion
the spread of cancer cells from a primary tumor into surrounding tissues.
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Definition: malignant tumor
a mass or swelling in which the cells no longer respond to normal control mechanisms, but divide rapidley.
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Definition: metastasis
the spread of malignant cells into distant tissues and organs, where secondary tumors subsequently develop.
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Definition: normal saline
a sodium chloride (NaCl) solution that approximates the normal osmotic concentration of extracellular fluids.
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Definition: oncogene
a cancer-causing gene created by a somatic mutation in a normal gene involved with growth, differentiation, or cell division.
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Definition: primary tumor
also know as primary neoplasm, the mass of cells in which a cancer cell intially developed.
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Definition: secondary tumor
a colony of cancerous cells formed by metastasis.
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Definition: tumor
neoplasm, a mass produced by abnormal cell growth and division.
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