What is the name of the transparent part of the eye that is located behind the lens and helps to focus light onto the retina?
A. Vitreous humor
B. Aqueous humor
C. Retina
D. Crystalline lens
Correct Answer: B. Aqueous humor
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A. Vitreous humor
B. Aqueous humor
C. Retina
D. Crystalline lens
A. To protect the eye
B. To focus light onto the retina
C. To control the amount of light entering the eye
D. All of the above
A. They create the electrical charge of the impulse
B. They transmit the impulse across the synapse
C. They control the strength of the impulse
D. They regulate the frequency of impulses
A. By diffusion
B. By active transport
C. By facilitated diffusion
D. By saltatory conduction
A. Sodium ions
B. Calcium ions
C. Potassium ions
D. Chloride ions
A. Small pox
B. BCG
C. Cholera
D. Typhoid
A. Heart
B. Liver
C. Lungs
D. Brain