A&P Module 7 Spinal Cord

The ________ nervous system provides involuntary regulation of smooth muscle, cardiac muscle, and glandular activity.

• autonomic

• peripheral

• central

• somatic

Tags

NGSS.HS-LS1-3

Motor neurons and interneurons are examples of:

• anaxonic

• bipolar

• multipolar

• tripolar

Clusters of RER in neurons are called

• neurofilaments

• neurofibrils

• perikaryon

• Nissl bodies

The neuroglial cells that participate in maintaining the blood-brain barrier are the ________.

• ependymal cells

• astrocytes

• microglia

• oligodendrocytes

Tags

NGSS.HS-LS1-4

The sum of the electrical and chemical forces acting on an ion is known as its ________________.

• permeability gradient

• therndoynamic difference

• electrochemical gradient

• action potential

If voltage-gated sodium channels were blocked, what effect would it have on the function of neurons?

• the dendrites could not receive signals

• the dendrites could not have temporal summation

• the axon would repeatedly generate an action potential

• the axon could not generate an action potential

Tags

NGSS.HS-PS2-5

Rapid impulse conduction from "node" to "node" is called ____________.

• Morton's conduction

• Alternating conduction

• Internodic conduction

• saltatory conduction

Which of the following types of nerve fiber possesses the fastest speed of impulse propagation?

• Type A fibers- large diameter + myelinated

• Type B fibers - smaller diameter + myelinated

• Type C fibers - Smaller unmyelinated fibers

• Type D fibers - larger unmyelinated fibers

The period during which an excitable membrane can respond to further stimulation if the stimulus is larger than normal is termed the ________ .

• absolute refractory period

• resting refractory period

• relative refractory period

• inter-refractory period

The site in the neuron where EPSPs and IPSPs are integrated (summated) is the ________________.

• dendrite

• axon hillock

• soma

• teledendria