The posterior portion of the vascular tunic, associated with the sclera, is the
Question
The posterior portion of the vascular tunic, associated with the sclera, is the
Solution
The posterior portion of the vascular tunic associated with the sclera is known as the choroid.
The choroid is a layer of blood vessels located between the retina and the sclera (the outer layer of the eye). Its primary function is to supply nutrients and oxygen to the outer layers of the retina, which is essential for the health and function of photoreceptor cells. The choroid contains a high concentration of blood vessels that are rich in melanin, which helps to absorb excess light and minimizes scattering within the eye, thus enhancing visual acuity. Additionally, the choroid plays a role in thermoregulation within the eye, maintaining an optimal temperature for visual processing.
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