Nervous System: Organization & Cells

What two organs are found in the central nervous system?

• brain/spinal cord

• spinal cord/motor neurons

• motor/sensory neurons

• only brain

Part of the nervous system made of the nerves that are not part of the brain or spinal cord.

• central nervous system
• peripheral nervous system

What does the autonomic nervous system control?

• Voluntary movement
• Cardiac muscles only
• Involuntary responses
• The spinal cord

Tags

NGSS.HS-LS1-3

This involuntary response occurs during high stress and usually begins with a surge of adrenaline.

• Sympathetic
• Parasympathetic
• Slow
• Sensory

This involuntary response occurs AFTER a period high stress and causes body to calm down

• Sympathetic
• Parasympathetic
• Slow
• Sensory

Communication between neurons occurs at the gap known as the:

• Axon terminal

• Synapse

• Muscle fiber

• Neuron membrane

What is the substance that is used to pass a nerve impulse from one neuron to the next?

• Calcium ions
• Sodium ions
• Potassium ions
• Neurotransmitters

What is structure labeled H in the picture?

• Nucleus
• Schwann Cell
• Node of Ranvier
• Myelin Sheath

What is the insulating membrane that surrounds parts of the axon that helps the impulses travel faster called?

• Axon
• Dendrites
• Node of Ranvier
• Myelin Sheath

What is the name of cells that support the cells that send information?

• Neurons
• Axons
• Dendrites
• Neuroglia