SCIENCE 10 ( Nervous System) – Multiple choice

What is the primary function of the nervous system?

To regulate the body's responses to internal and external stimuli

Which of the following is an example of a stimulus?

A change in temperature

Which of the following is NOT a function of the nervous system?

Producing red blood cells

The central nervous system (CNS) consists of which two main parts?

Brain and spinal cord

Which part of the brain controls posture, balance, and coordination?

Cerebellum

Which part of the brain connects to the spinal cord and controls automatic functions like breathing and heart rate?

Brain stem

What is the main role of the peripheral nervous system (PNS)?

To relay information between the brain and the rest of the body

Which division of the PNS is associated with voluntary control of body movements?

Somatic nervous system

Which division of the PNS is responsible for the "fight or flight" response?

Sympathetic nervous system

Which division of the PNS is responsible for the "rest and digest" response?

Parasympathetic nervous system

What is the basic unit of the nervous system?

Neuron

What is the small gap at the end of a neuron that allows signals to pass to the next neuron called?

Synapse

What part of the nerve cell carries nerve impulses toward the cell body?

Dendrite

What part of the nerve cell carries nerve impulses away from the cell body?

Axon

What is the tendency of an organism to maintain a stable internal environment called?

Homeostasis

Which part of the brain plays a significant role in maintaining homeostasis and links the nervous and endocrine systems?

Hypothalamus