Nervous System Quizizz Review

The central nervous system consists of the:

• brain & motor neurons

• brain & spinal cord

• peripheral nervous & spinal cord

• sensory & motor neurons

There are pairs of spinal nerves, and pairs of cranial nerves.

• 12, 150

• 12, 31 

• 31,31

• 31, 12

The skeletal muscles (voluntary) are controlled by the: 

• cerebellum

• autonomic nervous system

• somatic nervous system 

Which of the neuroglial cells provides the insulating sheath surrounding the axons?

• oligodendrocytes

• astrocytes

• microglial cells

• ependymal cells

 Gaps in the myelin sheath surrounding the axons are called:

• effectors

• interneurons

• nodes of Ranvier

• Schwann cells

Which tool is used to diagnose someone with multiple sclerosis?

• MRI

• electrocardiogram

• urinalysis

• X-ray

The neuron consists of a cell body, an axon and the ___ which receives information.

• synapse

• dendrite

• vesicle

• neurotransmitter

The junction (space) between two communicating neurons is the: 

• vesicle

• schwann’s area

• synapse

• node of Ranvier 

Once a threshold is achieved, an event called the ____ occurs.

• diffusion

• wave

• excitation

• action potential

What causes the demyelination of neurons in patients with multiple sclerosis? 

• toxins from the blood

• immune cells

• bacteria

• a virus