current

current

 [kur´ent]

1. something that flows.

2. specifically, electricity transmitted through a circuit.

alternating current a current that periodically flows in opposite directions; its amplitude fluctuates as a sine wave.

convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid.

direct current a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic current. This current has distinct and important polarity and marked secondary chemical effects.

galvanic current a steady direct current.

current of injury an electric current that flows between injured myocardium and normal myocardium, because such cells have a reduced membrane potential; it may be either diastolic or systolic.

current of injury, diastolic the current that flows from injured to noninjured tissue during electrical diastole.

current of injury, systolic the current that flows from healthy tissue to injured tissue during electrical systole.

inwardly rectifying current current that rectifies so that it passes more easily towards the interior of a cell.

leakage current the electrical current that exists in the parts or metal case of electrical equipment.

outwardly rectifying current current that rectifies so that it passes more easily towards the exterior of a cell.

potassium rectifying c's transmembrane currents that rectify inwardly or outwardly to make adjustments in cellular functions; they are mainly responsible for the repolarization phase of the action potential. There are at least six mechanisms by which potassium ions move across cardiac cell membranes in the role of rectifier.

cur·rent

(ker'rĕnt),

A stream or flow of fluid, air, or electricity.

[L. currens, pres. p. of curro, to run]

current

/cur·rent/ (kur´ent)

1. anything that flows.

2. electric c.

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action current  the current generated in the cell membrane of a nerve or muscle by the action potential.

alternating current  a current which periodically flows in opposite directions.

convection current  a current caused by movement by convection of warmer fluid into an area of cooler fluid.

direct current  a current flowing in one direction only.

electric current  the stream of electricity that moves along a conductor. Symbol I .

galvanic current  a steady direct current, especially one produced chemically.

current of injury  a flow of current to (systolic c. of injury) or from (diastolic c. of injury) the injured region of an ischemic heart, due to regional alteration in transmembrane potential.

pacemaker current  the small net positive current flowing into certain cardiac cells, such as those of the sinoatrial node, causing them to depolarize.

current

[kur′ənt]

Etymology: L, currere, to run

1 a flowing or streaming movement.

2 a flow of electrons along a conductor in a closed circuit; an electric current.

3 certain physiological electrical activity and characteristics of blood circulation. Physiological currents include abnerval current, action current, axial current, centrifugal current, centripetal current, compensating current, demarcation current, and electrotonic current. See also alternating current, direct current, volt, watt.

current

The amount of electrical charge carried/unit time. See Alternating current, M current, Radiofrequency current.

cur·rent

(kŭr'ĕnt)

A stream or flow of fluid, air, or electricity.

[L. currens, pres. p. of curro, to run]

cur·rent

(kŭr'rĕnt)

A stream or flow of fluid, air, or electricity.

[L. currens, pres. p. of curro, to run]

current,

n a measure of the number of electrons per second that pass a given point on a conductor.

current, alternating,

n a current that alternately changes its direction of flow. It usually consists of 60 complete cycles/sec.

current, coagulating,

n an electrical current, delivered by a needle, ball, or other variously shaped points, that coagulates tissue.

current dental terminology (CDT),

n a listing of descriptive terms and identifying codes developed by the American Dental Association (ADA) for reporting dental services and procedures to dental benefits plans.

current, direct,

n an electrical current in which the electron flow is in only one direction.

current, galvanic,

n a direct current created by a battery.

current procedural terminology (CPT),

n a listing of descriptive terms and identifying codes developed by the American Medical Association (AMA) for reporting practitioner services and procedures to medical plans and medicare.

n the maximum current in a roentgen-ray tube that fully uses all electrons that are available at the cathode for the production of roentgen rays.

current

that which flows; electric transmission in a circuit.

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alternating current

a current that flows in opposite directions sinusoidally.

direct current

a current whose direction is always the same.

Patient discussion about current

Q. I am looking for help. I am diagnosed with ADHD and currently under medication. I am looking for help. I am diagnosed with ADHD and currently under medication. I often get angry for silly issues. And I hate the company of others. I don’t like anyone and sometimes feel angry but hide within me. Please help in any way. Thank you!

A. I feel that you need some additional medication to calm your anger and agitation. I think attending psychotherapy along with medications will help you more. Psychotherapy will help you learn how to plan better and how to lower the stress and anger that you frequently feel.

Q. Can any one guide me…..my wife is in trouble…please help…We are currently taking all possible tests….. hi all, my wife is diagnosed with the breast cancer and the report revealed that it has spread into the chest bone. As per my knowledge bone cancer is dangerous. Can any one guide me…..my wife is in trouble…please help…We are currently taking all possible tests…..

A. I am sorry for your wife….its really a bad time for you. Bone cancer which is the result of breast cancer is a matter of concern and is diffcult to be taken care of. But the chemotherapy, surgery and radiation treatments are very potent to control the spread of cancer to bone from breast. You must get your tests done first and do check for the symptoms of regular cough, breath shortness and chest infections. All this indicates the requirement for the quick treatment. Don’t worry …..everything will be fine.

Q. Hi I want to gain my weight. 23yrs old 176mts height and my current weight is 56kgs..

A. Hi there. Lots of milkshakes should do it. That's what a nutritionist told me. What is mts? How does that relate to inches. How does kgs relate to pounds? Thank you.