1.2 - The Nervous System

The __________ look like branches coming off the soma and are responsible for receiving information from other neurons.

• axons

• myelin

• dendrites

• axon terminals

The axon:

• releases neurotransmitters across the synapse.

• controls the metabolism and maintenance of the neuron.

• protects the neuron from potential chemical and physical interference.

• carries information towards the cells that communicate with that neuron.

The human nervous system is composed of which two parts?

• central nervous system; somatic nervous system
• central nervous system; peripheral nervous system
• autonomic nervous system; somatic nervous system
• sympathetic nervous system; somatic nervous system

Which two parts constitute the autonomic nervous system?

• brain; spinal cord

• sensory nerves; motor nerves

• brain; somatic nervous system

• sympathetic nervous system; parasympathetic nervous system

The parasympathetic nervous system is not responsible for:

• dilating the pupils.

• contracting the bladder.

• stimulating salivary glands.

• slowing the heart rate and dilating arterioles.

What is homeostasis?

• an excitatory state
• the normal state of the body
• part of the central nervous system
• a state of balance in the body’s metabolism

A motor neuron:

• moves information throughout the body.
• communicates messages from the central nervous system to the body’s muscles
• communicates messages from the sensory organs to the central nervous system
• transmits information between motor and sensory neurons and the central nervous system

What is space between two neurons called?

• axon

• soma

• synapse

• dendrite

The sympathetic nervous system is responsible for:

• constricting bronchi
• stimulating intestines
• stimulating tear-glands
• inhibiting the stomach and pancreas

Where are neurotransmitters released from?

• myelin

• dendrites

• glial cells

• terminal buttons