Week 13 Terms Flashcards
Trans
Across, through
Sub
Below, under
Retro
Behind
Peri
Surrounding, around
Hyper
Excessive, above, more than normal
Ex
Out, outside of, outward
Epi
Above, upon
Endo
Within
World Wide Web
Network of links to data via an Internet system
Wavelength
Distance between peaks in a complete wave cycle
Wave
Naturally occurring phenomenon in which energy is transmitted in the form of peaks and trough
Voltage
Electrical force in a circuit; measures as the amount of force that passes a given point over a stated period
Ultrasound
Technology that uses high-frequency wave energy to identify anatomical structures and anomalies
Thermoregulation
Complex physiological process in which the body maintains a temperature that is optimal for survival
Thermal conductivity
Ability of a substance to conduct heat
State of matter
Physical forms of matter; 4 states of matter are gas, liquid, solid, plasma
Solid
State of matter in which molecules are bonded very tightly
Resistance
Measurement of substances ability to inhibit the flow of electricity
Refraction
Behavior of light as it passes through a substance
Reflection
Behavior of a wave when it reaches a nonabsorbant material; wave reverses and is directed back toward the source
Plasma
Gaseous state in which atom’s nucleus becomes separated from the electrons
Photon
Name give to a light particle
Periodic table
Standardized chart of all known elements
Nucleus
Center of an atom
Neutron
Subatomic particle located in the nucleus of the atom; no electrical charge
Momentum
Mathematical relationship between weight and velocity of a mass
Molecule
Specific substance made up of elements that are bonded together
Kinetic energy
Energy of motion
Isotope
Atom of a specific element with the correct number of electrons and protons, different number of neutrons
Intranet
Computer network within a facility or a organization that can be accessed only by those employed or affiliated with an organization
Internet
Worldwide public network of computers connected by wires, fiberoptic cables, or satellite signals
Insulator
Substance that does not conduct electrical current and is used to prevent electricity from seeking an alternate path
Hyperlinks
Electronic links between files and the electronic addresses for data associated with those links
Harmonics
Quality of sound related to frequency of sound waves
Frequency
Number of waves that pass through a point in 1 second; unit of measurement for frequency is the hertz (Hz)
Focal point
Exact location where light rays converge after passing through a convex lens
Element
Pure substance composed of atoms, each with the same number of protrons
Electron
Negatively charged particle that orbits the nucleus of an atom
Doppler ultrasound
Medical device that uses the Doppler effect and ultrasonic waves to measure and record blood flow as well as tissue density and shape
Direct current (DC)
Type of low-voltage electrical current in which electrons flow in one direction to complete a circuit; battery power uses DC
Database
Compilation of information, usually lists or numerical information, can be manipulated or calculated
Convection
Displacement of cool air by warm air; usually creates currents as warm air rises and cool air falls
Conductivity
Relative ability of a substance to transmit free electrons or electricity
Conduction
Transfer of heat from one substance to another by the natural movement of molecules; sets other molecules in motion
Central processing unit (CPU)
Component of a computer that contains the circuitry, memory, and power controls
Boiling point
Temperature of a substance when its state changes from a liquid to a gas
Atom
Discrete unit made of matter consisting of charged particles
Amplitude
Electromagnetic wave energy, the height of the wave
Ampere
Unit of measuring the amount of energy passing a given point in a stated period of time
Alternating current (AC)
Typer of electrical current where electricity changes direction to complete its circuit
