WitrynaAnatomy of the Eye. Choroid. Layer containing blood vessels that lines the back of the eye and is located between the retina (the inner light-sensitive layer) and the sclera (the outer white eye wall). Ciliary Body. … The iris is a contractile structure, consisting mainly of smooth muscle, surrounding the pupil. Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil. This is known as the pupillary light reflex. The iris contains two groups of smooth muscles; a circular group called the sphincter pupillae, and a radial group called the dilator pupillae. When the sphincter pupillae contract, the iris decrease…
Is the Brain a Muscle, an Organ, or Fat? What You Need to Know - Healthline
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Biology: QUIZ 3: BODY CONTROL AND INTERACTION WITH ENVIRONMENT
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