Study Biology notes on The Human Eye for O-Level. Useful for revision, homework, and exam preparation in Zimbabwe.
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This is the O-Level Biology notes. It is a free notes for revision.
THE HUMAN EYE The frontal view of the human eye You need to be able to label parts of the eye on diagrams. - The eyebrow stops sweat running down into the eye. - Eyelashes help to stop dust blowing into the eye. - Eyelids can close automatically (blinking is a reflex) to prevent dust and other particles getting into the surface of the cornea. - Blinking also helps to keep the surface moist by moving liquid secretions (tears) over the exposed surface. Tears also contain enzymes that have an antibacterial function. Horizontal section through human eve BIOLOGY MADE SIMPLE © MR TEE 2016 Page 1