Chapter 9: Nerve Tissue & the Nervous System
Which of the following is characteristic of the chromatophilic material called Nissl substance in neural tissue?
a. Found throughout neurons
b. Site of mRNA translation for proteins of the axolemma
c. Most abundant in unipolar neurons
d. Becomes more abundant as an individual gets older
e. An example of intermediate filament proteins
Which of the following events occurs immediately after an action potential reaches a synapse at an axon terminal?
a. Vesicle fusion with the presynaptic terminal membrane
b. Calcium ion influx at the presynaptic terminal
c. Neurotransmitter binding to receptors on the postsynaptic membrane
d. Neurotransmitter release into the synaptic cleft
e. Binding of the neurotransmitter at the presynaptic terminal
A report from a hospital pathology laboratory indicates that a microscope slide with a small specimen of neural tissue contains “numerous GFAP-positive” cells. What is the most likely source of this specimen?
a. A region of white matter
d. A region of gray matter
In the choroid plexus, water from capillaries is transported directly into the cerebrospinal fluid by what structure(s)?
c. Cells of the arachnoid mater
d. Lining of the central canal
What term applies to collections of neuronal cell bodies (somata) in the central nervous system?
Which structure contains trabeculae around which cerebrospinal fluid (CSF) flows?