An Axon That Has a -55 Mv Electric Potential Across

question 24

Multiple Choice

An axon that has a -55 mv electric potential across its membrane ____.

• A) probably does not have any myelin sheathing
• B) is going to fire an action potential
• C) has a very large concentration of Na+ ions inside the axon
• D) has just released several neurotransmitters

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Definitions:

Thermoreceptors

Sensory nerve endings under the skin that respond to changes in temperature at or near the skin and provide input to keep the body’s temperature at 98.6 degrees Fahrenheit.

Endorphins

Natural pain-relieving peptides produced by the body during exercise, excitement, pain, and sexual activity, known to induce feelings of pleasure or euphoria.

Cones

Cells in the eye's retina called photoreceptors are crucial for seeing colors and work optimally in well-lit conditions.

Chemical Senses

Pertains to the senses, including taste and smell, that involve the detection and processing of chemical stimuli.