Nervous System Quiz

The chemical messengers that cross a synapse are called a(n) _______.

• neurotransmitters

• neurons

• synaptic vesicles

• axon terminals

A(n) (a)   is an automatic response to a stimulus.

• reflex
• reaction
• response
• action

The basic units of structure and function of the nervous system are the (a)   .

• neuron
• cell
• atom
• molecule

A gap that exists between an axon and a dendrite is called a (a)   .

• synapse
• neuron
• axon
• cell

The part of a neuron that is the control center is called the (a)   .

• cell body
• axon
• dendrite
• synapse

The main control center of the central nervous system is the (a)   .

• brain
• heart
• lung
• stomach

The largest part of the brain is the (a)   .

• cerebrum
• cerebellum
• medulla
• pons

The part of the brain that controls balance and posture is the (a)   .

• cerebellum
• cerebrum
• medulla
• hypothalamus

The part of the central nervous system that controls heartbeat, breathing, and blood pressure is the (a)   part of the brain stem.

• medulla
• cerebrum
• cerebellum
• hypothalamus

An involuntary action that uses the spinal cord but not the brain is called a (a)   .

• reflex
• impulse
• reaction
• response