The Nurse Is Explaining How the Retina Works to a Patient

question 22

Multiple Choice

The nurse is explaining how the retina works to a patient who is experiencing visual changes. Which factor shared by the nurse is correct?

• A)The retina reacts to chemical stimulation from rods and cones.
• B)The rods and cones are stimulated by chemical stimulation of the retina.
• C)The fovea centralis is located directly behind the center of the lens and contains cones.
• D)The rods of the retina are most sensitive to light and are most responsible for color vision.

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Definitions:

Control Coils

Electromagnetic coils used within devices like relays and contactors to control the opening and closing of circuits.

Momentary-Contact

Momentary contact refers to an electrical switch or relay contact designed to close or open a circuit briefly, usually for as long as the actuating mechanism is held.

Jog Circuit

A control circuit method used to momentarily energize a motor or device, allowing for short movements or adjustments without continuous operation.

Jog Function

A control feature that enables a brief activation of a motor to adjust its position without initiating a full start cycle.