Reflexes, Touch, and Eye

Front

What is the function of the cornea in the eye?

Back

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. It refracts light and helps focus it onto the retina.

Front

What is a reflex arc?

Back

A reflex arc is the neural pathway that mediates a reflex action, consisting of a receptor, sensory neuron, integration center, motor neuron, and effector.

Front

What is the role of an effector in a reflex arc?

Back

The effector is the muscle or gland that responds to the motor neuron signal, producing a response to the stimulus.

Front

What are proprioceptors?

Back

Proprioceptors are sensory receptors located in muscles, tendons, and joints that provide information about body position and movement.

Front

Where is the pupil located?

Back

The pupil is located at the center of the iris.

Front

What happens to the pupil in bright light?

Back

In bright light, the pupil constricts to limit the amount of light entering the eye.

Front

What is the difference between exteroceptors and interoceptors?

Back

Exteroceptors respond to external stimuli (e.g., touch, temperature), while interoceptors respond to internal stimuli (e.g., hunger, thirst).

Front

What is the function of the retina?

Back

The retina is the light-sensitive layer at the back of the eye that converts light into neural signals for vision.

Front

What is the iris?

Back

The iris is the colored part of the eye that controls the size of the pupil and the amount of light that enters the eye.

Front

What is the role of the lens in the eye?

Back

The lens is a transparent structure that changes shape to help focus light onto the retina.