Nervous System Test Review

Miss Rodriquez & Mr Pitts

Motor neurons carry impulses from the brain and spinal cord to the

A. Heart

B. Muscles and glands

C. Touch receptors

D. Bones and skin

What is represented by the number 1?

The gaps in the myelin sheath surrounding neuron extensions are

called

A. Schwann cells

B. Motor neurons

C. Myelin gaps

D. Nodes of Ranvier

What is represented by the number 2?

What is represented by the number 3?

Impulses moving from the brain to muscles and glands move through

• Autonomic nervous system

• Motor neurons

• Sensory neurons

• Central nervous system

What is represented by the number 4?

An action potential can be caused by

A. Resting

B. Cutting a neuron

C. Electrically stimulating a neuron

D. Drinking water

What is represented by the number 5?

Resting potential in neurons is restored by

• The sodium-potassium pump

• The calcium influx

• ATP from respiration

• Glucose from photosynthetic tissues in human skin and hair

What is represented by the number 6?

Refer to the diagram. What happens when an action potential

travels along a neuron

A. K+ ions are pumped into the axon

B. Resting potential does not change

C. A small part of the axon reverses polarity

D. Na+ ions rush out of the cell

What is represented by the number 1?

What is the function of brain area A?

There are many more sodiums outside a neuron than inside when

A. the action potential sweeps by

B. during the state of resting potential

C. a small part of the axon reverses polarity

D. an the neuron dies

What is the function of brain area B?

Which of the following involves 2 or 3 neurons, is not learned, and is

not a conscious thing?

A. Digestive processes

B. Control of heart rate

C. Lifting weights

D. Reflexes

What is represented by letter A?

What is the gap between these neurons called?

Extensions from a neuron that receive input are

A. Axons

B. Dendrites

C. Motor neurons

D. Autonomic neurons

Neurotransmitters are released into the synapse when

A. You are startled

B. An action potential reaches the end of the axon

C. An action potential reaches the end of the dendrite

D. You take morphine or other narcotic drugs

What is the function of brain area C?

What is represented by letter B?

Insulating axons and speeding the impulse transmission is the job of

A. Nodes of Ranvier

B. Dendrites

C. Sodium-potassium pumps

D. Myelin sheaths

What is the function of brain area D?

What is the function of brain area E?

What is represented by letter C?

The brain and spinal cord are the

A. CNS / Central Nervous System

B. PNS / Peripheral Nervous System

C. Motor Neurons

D. Sensory Neurons

What is the function of brain area F?

What is represented by letter D?

Messages from receptors are transmitted to the CNS by

A. Autonomic Neurons

B. Somatic neurons

C. Motor Neurons

D. Sensory Neurons

What is represented by letter E?

Pathways to and from the CNS are provided by the

A. Autonomic Neurons

B. Somatic neurons

C. PNS / peripheral nervous system

D. Sensory Neurons

What is represented by letter F?

Involuntary functions of the internal organs are controlled by the

A. Autonomic nervous system

B. Somatic nervous system

C. Motor Neurons

D. Sensory Neurons

The sympathetic nervous system responds to

A. Typical homeostatic moments

B. Situations involving relaxation

C. Situations of threat

D. Situations of low blood sugar