When You Are Walking on a Smooth Surface with Bare

question 10

Multiple Choice

When you are walking on a smooth surface with bare feet and step on a small rock, you notice the rock more than you notice the feeling of a smooth surface. How does stepping on the rock affect the conduction of sensory information to the central nervous system?

• A) The raised surface of the rock produces a stronger stimulus that leads to a greater number of action potentials in those sensory neurons.
• B) The raised surface of the rock produces a stronger stimulus that leads to a greater amplitude of action potentials in those sensory neurons.
• C) The raised surface of the rock produces a stimulus that leads to action potentials in those sensory neurons, while the sensory neurons stimulated by a smooth surface do not respond.
• D) All of the sensory neurons in the foot respond equally, but filtering in the central nervous system causes you to notice the rock.

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Definitions:

Vulnerability

The state in which there is a risk of encountering harm or assault, emotionally or physically.

Social Trigger

An environmental or interpersonal stimulus that influences one's emotional state or behavior.

Reuptake

A process in neurotransmission where neurotransmitters released into the synaptic gap are reabsorbed back into the pre-synaptic neuron, affecting the intensity and duration of neurotransmission.

Synapse

The junction between two neurons or a neuron and a muscle cell where electrical or chemical signals are transmitted across the gap.