Nervous System (1)

The skeletal muscles are controlled by the ____ nervous system.

• afferent
• somatic
• involuntary

________ cells form the myelin sheaths around nerve fibers in the PNS

• satellite
• ependymal
• schwann
• nerve

Support cells in the central nervous system are collectively called ________.

• myelin sheaths
• neuroglia
• oligodendrocytes
• microlia

) The part of the neuron that typically conducts nerve impulses away from the cell body is the ________.

• dendrite
• cell body
• synaptic cleft
• axon

The gaps between Schwann cells found at regular intervals in peripheral system neurons are called ________.

• synaptic clefts
• axon terminals
• nodes of Ranvier
• myelin sheaths

The nervous system is structurally subdivided into two systems: ________ nervous system and ________ nervous system.

• central; peripheral
• somatic; autonomic
• parasympathetic; sympathetic
• autonomic; sympathetic

The cell bodies of the ________ neurons are always located within the CNS

• proprioceptor
• afferent
• motor
• sensory

Myelinated fibers (tracts) form ________ matter while unmyelinated fibers form ________ matter. 

• sensory, motor
• gray, white
• motor, sensory
• white, gray

________ connect sensory and motor neurons in neural pathways and their cell bodies are typically located in the central nervous system

• Interneurons (association neurons)
• afferent
• efferent
• Proprioceptors

During repolarization, ________ ions are pumped out of the cell. 

• sodium
• potassium
• both sodium & postassium
• calcium

Tags

NGSS.HS-LS1-3