Pupil

The round opening in the center of the iris (the colored tissue that makes the "eye color" at the front of the eye). The pupil changes size to let light into the eye. It gets ...

pupil

Animals; Birds

The pupil is the dark circular, hollow passage in the middle of the iris through which the light enters the eye and forms an image on the back of the eye.

pupil

Health care; General

The opening in the center of the iris.

kinase

Health care; Genetic disorders

Any of various enzymes that catalyze the transfer of phosphate groups from a high-energy phosphate-containing molecule (as ATP or ADP) to a substrate--called also phosphokinase.

hyperostosis

Health care; Genetic disorders

Increase in the mass of bone per unit volume.

type I skeletal muscle fibers

Health care; Genetic disorders

Skeletal muscle fibers having low myofibrillar ATPase activity, low glycogen content, and high myoglobin content, high mitochondrial oxidative enzyme activities, and an ...

pericardium

Health care; Genetic disorders

The fibroserous sac surrounding the heart and the roots of the great vessels.

fetus

Health care; Genetic disorders

An unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind; specifically: a developing human from usually two months after conception to ...

myosin light chain

Health care; Genetic disorders

The smaller subunits of myosins that bind near the head groups of myosin heavy chains. The myosin light chains have a molecular weight of about 20 KDa and there are usually one ...