26 results found

Search Results for: pupil

Pupil

pupil 1. A youth or scholar of either sex under the care of an instructor or tutor. Too far in years to be a pupil now.... Read More

Pupillary light reflex

Definition noun, plural: pupillary light reflexes A reflex marked by the constriction of the pupil in response to the... Read More

Amaurotic pupil

Amaurotic pupil pupil in an eye that is blind because of ocular or optic nerve disease; this pupil will not contract to... Read More

Seclusion of pupil

seclusion of pupil The condition resulting from posterior annular synechia, in which the iris is bound down throughout the... Read More

Ganglia

Ganglia Definition What are ganglia? To simply define ganglia in biology, it is the structure of an oval shape that... Read More

Accommodation reflex

Definition noun, plural: accommodation reflexes A reflex reaction of the eye in response to focusing on near object followed... Read More

Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... Read More

Core

Core 1. The central mass of necrotic tissue in a boil. 2. A metal casting, usually with a post in the canal of a tooth Root,... Read More

Blindness – Evolutionary regression? Maybe not!

The recent Netflix's hit flick, Bird Box, surely startled the viewers with the thrilling scenarios revolving around the... Read More

Adaptation

Adaptation Definition In biology and ecology, adaptation refers to the process of adjusting in behavior, physiology, or... Read More

Aristotle

Aristotle --> aristotle, Asclepliad of Stagira (Science: person) The son of a physician and old Asclepiad family was born... Read More

Monitor

monitor 1. One who admonishes; one who warns of faults, informs of duty, or gives advice and instruction by way of reproof... Read More

Ball

Ball 1. Any round or roundish body or mass; a sphere or globe; as, a ball of twine; a ball of snow. 2. A spherical body of... Read More

Iris

Iris Origin: L. Iris, iridis, the goddess, gr, the rainbow, iris of the eye, the plant iris. Cf. Orris. 1. The goddess of... Read More

Anhidrosis

Definition noun, plural: anhidroses A pathological condition characterized by the inability to sweat... Read More

Lead

Lead 1. To guide or conduct with the hand, or by means of some physical contact connection; as, a father leads a child; a... Read More

Parasympathetic nervous system

Definition noun A division of the (vertebrate) autonomic nervous system whose physiological effects are mostly in opposition... Read More

Orienting reflex

orienting reflex An aspect of attending in which an organism's initial response to a change or to a novel stimulus is such... Read More

Felis

Definition noun (taxonomy) A genus of the family Felidae and includes domestic cat, sand cat, black-footed cat, wildcat,... Read More

Aqueous humor

Definition noun, plural: aqueous humors A clear, watery body fluid secreted by the ciliary epithelium, and fills the... Read More

Servomechanism

servomechanism 1. A control system using negative feedback to operate another system. 2. A process that behaves as a... Read More

Accommodation

Accomodation, in general sense, may refer to the dwelling or a transient lodging. In biology, it refers to an adjustment or... Read More

Apt

Apt 1. Fit or fitted; suited; suitable; appropriate. They have always apt instruments. (Burke) A river . . . Apt to be... Read More

Back aperture

Back aperture (Science: microscopy) The exit pupil of a microscope objective lens. The objective lens back aperture, which... Read More

Pause

pause 1. A temporary stop or rest; an intermission of action; interruption; suspension; cessation. 2. Temporary inaction or... Read More

A Look Into Natural Selection and its Mechanisms

Charles Darwin is credited with outlining the fundamentals of evolution. He was a smart and eager pupil and protégé,... Read More