Examlex
An astigmatism results from unequal curvatures of the cornea or lens.
Nuclei
The plural of nucleus, referring to the membrane-bound organelles in cells that contain genetic material.
Granules
Small particles or grains, often referring to microscopic structures within cells that contain enzymes and other substances.
Open Circulatory System
A type of circulatory system where blood is not always contained within blood vessels but flows freely through cavities in the body, facilitating exchange of nutrients and waste with cells.
Blood Vessels
The tubes in the body through which blood flows, including arteries, veins, and capillaries, responsible for transporting oxygen, nutrients, and waste products.
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