WorksheetsCh.7 The nervous system dynamic study module
Total questions: 12
Worksheet time: 6mins
The cerebellum aids in maintenance of ___________
Speech
Balance and posture
Emotional behavior
Binocular vision
The cell bodies of sensory neuron whose fibers enter the spinal cord are found in the _________
Dorsal root ganglion
Autonomic ganglia
Ventral root
Ventral root ganglion
Supporting cells in in the PNS include _________ that form the myelin sheaths and satellite cells that act as protective cushioning cells.
Astrocytes
Neurofibrils
Schwann cells
Dendrites
Which of the following statements regarding the nerve impulse is TRUE?
During repolarization, sodium ions diffuse rapidly into the cell
A stimulus changes the permeability of a “patch” of the membrane, and sodium ions (Na+) diffuse rapidly into the cell
If a stimulus is strong enough, hyperpolarization causes membrane polarity to be completely reversed, and an action potential is initiated
The external face of resting membrane is slightly negative, and it’s internal face is slightly positive
The ______ produce cerebrospinal fluid
Mammillary bodies
Pineal gland
Choroid plexuses
Corpora quadrigemina
Collectively, the supporting cells in the CNS are called ________
Microglia
Oligodendrocytes
Neuroglia
Schwann cells
Damage to which cranial nerve(s) may impair the sense of taste?
The facial (N VII) and the glossopharyngeal (N IX)
Facial (N VII)
Hypoglossal (N XII)
Glossopharyngeal (N IX)
Which of the following is NOT a central nervous system glial cell?
Microglia
Neuron
Ependymal cell
Astrocyte
The deep groove that separates the two hemispheres of the cerebrum is called the _______
Postcentral gyrus
Longitudinal fissure
Central sulcus
Precentral gyrus
The ______ nervous system includes the brain and spinal cord
Peripheral
Efferent
Afferent
Central
An action potential i) occurs when the graded potential is strong enough, ii) obeys the all-or-none rule, iii) is initiated by the opening of “gates” for sodium channels, iv) is characterized by a series of depolarization/ repolarizations along the membrane
All the statements are correct
Only (ii) and (iv) are correct
Only (i) and (iii) are correct
Only (i),(ii) and (iii) are correct
The axon of a neuron _________
Is the only process of a multipolar neuron
Conducts nerve impulse toward the neuron cell body
Conducts nerve impulses away from the neuron cell body
Can be one of many attached to the cell body
