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The part of the liver or other organ where its vessels and nerves enter; the hilus.

Causing, or giving rise to, pressure or to an increase of pressure; as, pressor nerve fibers, stimulation of which excites the vasomotor center, thus causing a stronger contraction of the arteries and consequently an increase of the arterial blood pressure; -- opposed to depressor. Landois & Stirling.…

The science of the connection between nerve action and consciousness; the science which treats of the relations of the psychical and physical in their conjoint operation in man; the doctrine of the relation of function or dependence between body and soul.

oot proceeding from a main stock or channel; as, the ramifications of an artery, vein, or nerve.

the highest point, predicted the coming reaction. Macaulay. Reaction time (Physiol.), in nerve physiology, the interval between the application of a stimulus to an end organ of sense and the reaction or resulting movement; -- called also physiological time. -- Reaction wheel (Mech.), a water wheel driven by the react…

A combining form signifying straight; as, rectilineal, having straight lines; rectinerved.

Running back toward its origin; as, a recurrent nerve or artery. Recurrent fever. (Med.) See Relapsing fever, under Relapsing. -- Recurrent pulse (Physiol.), the pulse beat which appears (when the radial artery is compressed at the wrist) on the distal side of the point of pressure through the arteries of the palm of…

The transference of an excitement from one nerve fiber to another by means of the nerve cells, as in reflex action. See Reflex action, under Reflex. Angle of reflection, the angle which anything, as a ray of light, on leaving a reflecting surface, makes with the perpendicular to the surface. -- Angle of total reflecti…

ormed involuntarily in consequence of an impulse or impression transmitted along afferent nerves to a nerve center, from which it is reflected to an efferent nerve, and so calls into action certain muscles, organs, or cells. -- Reflex nerve (Physiol.), an excito-motory nerve. See Exito- motory.

ch have been severed, so that they become anatomically perfect; as, the regeneration of a nerve.

rtaining to respiration; serving for respiration; as, the respiratory organs; respiratory nerves; the respiratory function; respiratory changes. Respiratory foods. (Physiol.) See 2d Note under Food, n., 1. -- Respiratory tree (Zoöl.), the branched internal gill of certain holothurians.

A net or network; a plexus; particularly, a network of blood vessels or nerves, or a part resembling a network.

hich the back part of the globe of the eye is lined, and in which the fibers of the optic nerve terminate. See Eye.

part of the ocelli, or ommatidia, of the eyes of invertebrates, and contain the terminal nerve fibrillæ. See Illust. under Ommatidium.

ont of the prosencephalon, consisting of the two olfactory lobes from which the olfactory nerves arise.

The chief nerve, or one of the chief nerves, of a leaf.

ion. The imminent and constant risk of assassination, a risk which has shaken very strong nerves. Macaulay.

aste; herb of grace. It is used in medicine. Then purged with euphrasy and rue The visual nerve, for he had much to see. Milton. They [the exorcists] are to try the devil by holy water, incense, sulphur, rue, which from thence, as we suppose, came to be called herb of grace. Jer. Taylor.

Of, pertaining to, or in the region of, the saphenous veins; as, the saphenous nerves; the saphenous opening, an opening in the broad fascia of the thigh through which the internal saphenous vein passes.

to the hip; in the region of, or affecting, the hip; ischial; ischiatic; as, the sciatic nerve, sciatic pains.