Which of the Following Occur When the Chemoreceptors in the Medulla

question 78

Multiple Choice

Which of the following occur when the chemoreceptors in the medulla oblongata detect a low blood pH?

• A)Parasympathetic stimulation increases.
• B)The heart rate and stroke volume decrease.
• C)The adrenal medulla increases the secretion of epinephrine and norepinephrine.
• D)Blood flow to the lungs decreases.
• E)The cardioregulatory center decreases sympathetic stimulation.

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Definitions:

Chemical Message

Information passed between organisms or cells, often in the form of hormones or neurotransmitters, that affects physiological or behavioral changes.

Synapse

The junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.

Nerve Impulse

A signal transmitted along a nerve fiber, consisting of a wave of electrical depolarization that reverses the electric potential along the membrane of the nerve cell.

Neighboring Neuron

A neuron that is located adjacent to another neuron, facilitating neural communication.