5 Questions
What are the three layers that enclose the human eye?
The three layers that enclose the human eye are scleral cornea, choroid/ciliary body/iris, and retina.
What is the outer layer of the eyeball made of?
The outer layer of the eyeball is made of a tough connective tissue called sclera, which forms the white part of the eye.
What is the function of the choroid in the eye?
The choroid contains many blood vessels that nourish the retina and is specialized to form the ciliary body and iris.
What are the two layers that make up the retina?
The retina consists of an outer-pigmented layer and an inner nervous tissue layer.
What is the function of the lens in the eye?
The lens is a transparent eye structure that focuses the light rays.
Study Notes
Structure of the Eye
- The human eye has three encasing layers: sclera, choroid, and retina.
Outer Layer
- The outer layer of the eyeball, the sclera, is made of white, tough, fibrous tissue that provides protection.
Middle Layer
- The choroid, the middle layer, is a layer of blood vessels that supplies the retina with oxygen and nutrients.
Inner Layer
- The retina, the inner layer, is composed of two layers: photoreceptor cells (rods and cones) and neural cells.
Lens Function
- The lens, located behind the iris, changes shape to focus light onto the retina, allowing for near and far vision.
Test your knowledge of human physiology with this quiz from the BSc Psychology Semester-3 course. Explore topics such as the nervous system, endocrine system, and other physiological processes.
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