Physiological Evidence Suggests That Which of the Senses Is Thought

question 40

Multiple Choice

Physiological evidence suggests that which of the senses is thought to be the first sensory system to develop?

• A) touch
• B) smell
• C) hearing
• D) sight

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Definitions:

Absolute Refractory Period

A phase during the action potential of a neuron in which it is impossible for the neuron to fire again, regardless of the strength of any incoming stimuli.

Neural Impulse

Also known as an action potential, it is the electrical signal that travels along the axon of a neuron.

Resting Potential

The electrical charge of a neuron when it is not active, representing a state of potential energy that can be used for neural communication.

Acetylcholine

A neurotransmitter in the body involved in promoting wakefulness, muscle activation, and memory functions.