biomedical science and technology Flashcards
Current
measurement of the rate of flow of the electrons
Amperes
measurement of amount of current flowing past a given point in a circuit in one second
voltage
the force or push that moves free electrons from one atom to anther
Frequency
the number of energy waves that pass through a specific point over a specific period of time. measured in hertz
AC
alternating current; electrons flow back and forth along a single pathway due to changes in polarity
DC
flows in one direction but loses voltage when it travels
circuit
pathway of electron flow
resistance
measured in ohms; a property of substances that obstructs the flow of free electrons
Law of inertia
object at rest stays at rest, object in motion stays in motion until acted upon
Law of Gravity
every particle attracts another particle with a force that is proportional to the product of their masses and inversely proportional to the distance between them
Cavitational Ultrasonic Suction Aspirator
an ultrasonic vibrating tip used to break up and vacuum away tissue.
What are the three characteristics of a laser?
coherence, collimation, and monochromatic
Pitch
up and down movement
Roll
Rotational movement
Telechir
remotely controlled robot
Yaw
right and left movement
Single robotic arm
manipulates the instrument under the surgeons direct control. Attached to OR table.
Electrical energy
The movement of electrons from one atomic valence she’ll to the valence shell of an adjacent atom
The greater the number of free electrons, the greater the what
Conductivity
Power
The rate at which the electrical movement is accomplished measured in watts
Impedance
Materials that either facilitate or obstruct the flow of electricity
Monopolar
The flow of electricity occurs in one direction. Electrical energy passes through the adjacent body tissues before contacting the return electrode. May inadvertently damage unintended tissues
Bipolar
The active and return electrode are contained within the same delivery device,
