ARC


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arc

 [ahrk]
a part of the circumference of a circle, or a regularly curved line.
binauricular arc the arc across the top of the head from one auricular point to the other.
reflex arc the circuit traveled by impulses producing a reflex action: receptor organ, afferent nerve, nerve center, efferent nerve, effector organ in a muscle; see also reflex.
Three-neuron reflex arc. From Dorland's, 2000.

ARC

Abbreviation for AIDS-related complex.

arc

(ark),
1. A curved line or segment of a circle.
2. Continuous luminous passage of an electric current in a gas or vacuum between two or more separated electrodes.
[L. arcus, a bow]

ARC

AIDS-related complex; American Red Cross; anomalous retinal correspondence.

arc

(ahrk)
1. a structure or projected path having a curved outline.
2. a visible electrical discharge taking the outline of an arc.
3. in neurophysiology, the pathway of neural reactions.

reflex arc  the neural arc utilized in a reflex action; an impulse travels centrally over afferent fibers to a nerve center, and the response outward to an effector organ or part over efferent fibers.
Enlarge picture
Three-neuron reflex arc.

ARC

abbr.
1. AIDS-related complex
2. American Red Cross

arc

Etymology: L, arcus, bow
a part of the circumference of a circle.

ARC

abbreviation for AIDS-related complex.

ARC

noun A part of the circumference of a circle; a curve.

Abbreviation for:
absolute reticulocyte count
Accreditation Review Committee
Accreditation Review Council
Addiction Research Centre
addict rehabilitation counsellor
age-related cataract
Ageing Research Centre
aggregate of red (blood) cells
AIDS-related complex
AIDS-related condition
alcohol rehabilitation centre
American Red Cross (see there)
annual rate of change
Annual Report on Carcinogens
antigen responsive cells
Application Review Committee
Arthritis Rehabilitation Centre
Arthritis and Rheumatism Council (Medspeak-UK)
Association for Retarded Citizens
Association pour Recherche du Cancer (see there)
atypical reparative changes
Australian Resuscitation Council

Genetics
ARC. A gene on chromosome 8q24.3 that encodes a protein required for consolidating synaptic plasticity and forming long-term memory, as well as in stress fibre dynamics and cell migration. It regulates endocytosis of AMPA receptors in response to synaptic activity, and is required for homeostatic scaling of AMPA receptors. ARC also plays a role in regulating cell morphology and cytoskeletal organisation. It is also an older gene symbol for what is now designated as NOL3, see there.

Neurology
noun A circuit or loop.
 
Sports medicine
verb To move with curved trajectory.

ARC

AIDS-related complex, also
1. American Red Cross, see there.
2. Association pour Recherche du Cancer, see there.

ARC

Abbreviation for AIDS-related complex.

arc

(ahrk)
1. A curved line or segment of a circle.
2. Continuous luminous passage of an electric current in a gas or vacuum between two or more separated carbon or other electrodes.
[L. arcus, a bow]

arc

(ark) [L. arcus, bow]
1. A curved line; a portion of a circle.
2. An electric spark, esp. in defibrillation or cardioversion, that follows an unwanted or potentially hazardous pathway.

nuclear arc

Spiral patterns on the surface of the lens due to a concentric pattern of fiber growth.

painful arc

A portion of the range of motion in which pain is perceived during active movement of an extremity. Pain is usually due to pinching of soft tissues at only a specific portion of the range of motion and may be caused by tendonitis or bursitis.
Enlarge picture
REFLEX ARC FOR PATELLAR TENDON REFLEX

reflex arc

The path followed by a nerve impulse to produce a reflex action. The impulse originates in a receptor at the point of stimulation, passes through an afferent neuron or neurons to a reflex center in the brain or spinal cord, and from the center out through efferent neurons to the effector organ, where the response occurs.
See: illustration

ARC

Acronym for
1. AIDS-RELATED COMPLEX. A lesser form of AIDS, often preceding the fully developed condition.

ARC

Abbreviation for AIDS-related complex.

arc

(ahrk)
1. A curved line or segment of a circle.
See: arch, arcus, arcade
2. Continuous luminous passage of an electric current in a gas or vacuum between two or more separated electrodes.
[L. arcus, a bow]

ARC,

n the abbreviation for AIDS-related complex. See also acquired immunodeficiency syndrome.

arc

a part of the circumference of a circle, or a regularly curved line.

binauricular arc
the arc across the top of the head from one auricular point to the other.
reflex arc
the circuit traveled by impulses producing a reflex action: from the receptor organ, through the afferent nerve, nerve center, efferent nerve, to the effector organ.
References in classic literature ?
As he stood directly beneath a brilliant arc light, waiting for a limousine that was approaching to pass him, he heard his name called in a sweet feminine voice.
Shortening the distance by leaping across a chord of the arc of the other's flight, Michael closed his jaws on the back and side of the neck.
The Mary Rebecca shot around into the wind, the captive fishermen describing a great arc behind her, and forged ahead till she lost way, when lines we're flung ashore and she was made fast.
High overhead was the spirit-like blue of paling skies; the east was a great arc of crystal, smitten through with auroral crimsonings; just above it was one milk-white star of morning, like a pearl on a silver sea.
Then, plunging into the Gulf of Mexico, it subtends the arc formed by the coast of Alabama, Mississippi, and Louisiana; then skirting Texas, off which it cuts an angle, it continues its course over Mexico, crosses the Sonora, Old California, and loses itself in the Pacific Ocean.
It may be that in the distance a fish describes an arc of three or four feet in the air, and there is one bright flash where it emerges, and another where it strikes the water; sometimes the whole silvery arc is revealed; or here and there, perhaps, is a thistle-down floating on its surface, which the fishes dart at and so dimple it again.
Wide and far swung Tarzan of the Apes, until at last, as he reached the highest point of the arc the rope, which rapidly had frayed on the rough bark of the tree limb, parted suddenly.
Eventually they saw a very placid and prosperous man in his shirt sleeves, with a face as round as the recently sunken moon, and rays of red whisker around the low arc of it, who was leaning on a post above the sluggish tide.
I shall attempt in this and the following chapter to record some facts that indicate the path of the law of Compensation; happy beyond my expectation if I shall truly draw the smallest arc of this circle.
The Ghost has attained the southernmost point of the arc she is describing across the Pacific, and is already beginning to edge away to the west and north toward some lone island, it is rumoured, where she will fill her water-casks before proceeding to the season's hunt along the coast of Japan.
Encompassed in a luminous cloud, of which he was now merely the fiery heart, without material substance, he swung through unthinkable arcs of oscillation, like a vast pendulum.
How is your superb house in the Rue Saint-André des Arcs coming on?