Nervous System Quiz

The part of the nervous system that controls smooth muscle, cardiac muscle, and glands is the

• Central nervous system

• Autonomic nervous system

• Somatic nervous system

• Peripheral nervous system

The sensory (afferent) division of the peripheral nervous system

• Transmits action potentials from the CNS to effector organs

• Conveys action potentials to the CNS

• Stimulates smooth muscle and glands

• Stimulates skeletal muscle

The motor (efferent) division of the peripheral nervous system

• Transmits action potentials from the periphery to the CNS

• Conveys action potentials away from the CNS

• Is part of the brain

• Is part of the spinal cord

Motor neurons and interneurons are

• Pseudounipolar neurons

• Bipolar neurons

• Multipolar neurons

• Sensory neurons

Neuroglia that produce cerebrospinal fluid are

• Astrocytes

• Microglia

• Ependymal cells

• Oligodendrocytes

Neuroglia that are phagocytic within the central nervous system are

• Astrocytes

• Microglia

• Oligodendrocytes

• Satellite cells

Gaps in the myelin sheath are called

• Schwann segments

• Nodes of Ranvier

• Internodes

• Axon terminals

Most sodium (Na⁺) channels are located in the

• Myelin sheath

• Nodes of Ranvier

• Soma

• Dendrites

A neuron at rest has a membrane potential of approximately

• –70 mV

• –55 mV

• +30 mV

• 0 mV

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A local change in membrane potential that decreases with distance is called a

• Action potential

• Threshold potential

• Graded potential

• Resting potential