Quizizz Quiz: Nervous System Basics

What is the primary function of the central nervous system (CNS)?

• To transmit signals from the brain to the rest of the body

• To process and integrate information

• To regulate involuntary body functions

• To control voluntary muscle movements

Which of the following is a component of the peripheral nervous system (PNS)?

• Brain

• Spinal cord

• Cranial nerves

• Cerebellum

How does the sympathetic nervous system prepare the body for a "fight or flight" response?

• By decreasing heart rate

• By increasing digestive activity

• By dilating pupils

• By constricting airways

Explain how the parasympathetic nervous system affects heart rate.

• It increases heart rate to prepare for physical activity.

• It decreases heart rate to promote relaxation.

• It maintains a constant heart rate regardless of activity.

• It has no effect on heart rate.

Compare the roles of the sympathetic and parasympathetic nervous systems in regulating the body's response to stress.

• Both systems increase heart rate and energy expenditure.

• The sympathetic system increases energy expenditure, while the parasympathetic system conserves energy.

• Both systems decrease heart rate and promote relaxation.

• The sympathetic system conserves energy, while the parasympathetic system increases energy expenditure.

Analyze the impact of a malfunction in the central nervous system on the peripheral nervous system.

• It would have no impact as they function independently.

• It could lead to impaired signal transmission to the body.

• It would enhance the functioning of the peripheral nervous system.

• It would only affect voluntary muscle movements.

Evaluate the importance of the parasympathetic nervous system in maintaining homeostasis.

• It is not important as homeostasis is maintained by the endocrine system.

• It plays a crucial role by promoting rest and digest functions.

• It only functions during sleep and is not involved in homeostasis.

• It disrupts homeostasis by increasing energy expenditure.

What would be the consequence of a complete failure of the sympathetic nervous system?

• Increased heart rate and blood pressure

• Decreased ability to respond to stress

• Enhanced digestive processes

• Improved immune response

Describe the interaction between the central nervous system and the peripheral nervous system during a reflex action.

• The CNS directly controls the reflex without PNS involvement.

• The PNS sends signals to the CNS, which then processes and responds.

• The PNS independently manages reflex actions without CNS input.

• The CNS and PNS work together, with the PNS initiating the reflex and the CNS processing it.

Predict the effects on the body if the parasympathetic nervous system is overactive.

• Increased heart rate and blood pressure

• Enhanced stress response

• Excessive relaxation and decreased metabolic rate

• Improved physical performance