Neuron Anatomy and Nerve Impulses

A nerve cell can also be termed

• Neuron
• Cell Body
• Dendrite
• Axon

Myelin sheaths are formed around what structure of the neuron?

• Axon
• Dendrite
• Cell Body
• Node of Ranvier

What type of cell creates a myelin sheath in the peripheral nervous system?

• Schwann cell
• Oligodentrite
• Osteocyte
• Cell Body

What is the gap between the axon terminal of one neuron and the dendrite of the next neuron called?

• Synapse
• Node of Ranvier
• Joint
• Neuromuscular Junction

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 are the 2 major divisions of the nervous system?

• Central and Peripheral
• Sensory and Motor
• Sympathetic and Parasympathetic
• Somatic and Autonomic

The central nervous consists of what?

• Brain and Spinal cord
• Spinal and Cranial Nerves
• Afferent and Efferent pathways
• Somatic and Autonomic nervous systems

The peripheral nervous system is composed of all of the following EXCEPT

• Brain and Spinal cord
• Spinal and Cranial Nerves
• Afferent and Efferent pathways
• Somatic and Autonomic nervous systems

Through which type of nerve fibers do impulses travel fastest?

• Unmyelinated
• Myelinated
• Somatic
• Autonomic

What is structure labeled B in the picture?

• Dendrite
• Axon
• Cell Body
• Axon Terminal

Tags

NGSS.MS-LS1-2