A Lens That Is Thicker at the Center Than at the Edge

question 14

Multiple Choice

A lens that is thicker at the center than at the edge is

• A) a diverging lens only.
• B) a convex lens only.
• C) a converging lens only.
• D) both a convex lens and a converging lens.

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Definitions:

Crossed Extensor Reflex

A reflex action that involves the simultaneous contraction of muscles on one side of the body and the relaxation of muscles on the opposite side, often in response to pain.

Withdrawal Reflex

An involuntary response to a harmful stimulus, resulting in the removal of a body part from the source of pain.

Flexor Muscles

Muscles that decrease the angle between two bones at a joint, commonly involved in bending or flexing parts of the body.

Inhibitory Interneuron

A type of neuron that reduces or inhibits the activity of other neurons, playing a key role in neural circuits.