Refer to the Neuronal Circuitry of Papillary Constriction and Dilation

question 5

Multiple Choice

Refer to the neuronal circuitry of papillary constriction and dilation in Figure 10.1. In the text Which reaction is more of a sympathetic nervous system response?

• A) pupillary dilation
• B) pupillary constriction
• C) both pupillary dilation and constriction
• D) neither pupillary dilation or constriction

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Definitions:

Norepinephrine

A neurotransmitter and hormone involved in arousal, alertness, and regulation of blood pressure, among other physiological processes.

Manic Episode

a period of abnormally elevated mood, arousal, and energy levels, often seen in bipolar disorder.

Neurotransmitter

A chemical substance released at the end of a nerve fiber by the arrival of a nerve impulse, transmitting the impulse to another nerve fiber, a muscle fiber, or some other structure.

Chronic Depression

A prolonged state of depression that lasts for years, often characterized by persistent sadness and loss of interest.