chapter 12 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
The somatic nervous system controls what? | Skeletal muscle contractions |
The effectors of the autonomic nervous system includes: | Skeletal muscle |
which two branches of the nervous system commonly work as anatgonists to each other? | papasympathetic and sympathetic |
clusters of rough endoplasmic reticulum and free ribosomes within the cell body of a neuron appear dark when stained. These are called: | Nissl bodies |
If axons divide into branches, the branches are called: | collaterals |
most sensory neurons are ___ neurons. | unipolar |
motor neurons and most interneurons are ___ neurons. | multipolar |
____ are receptors that monitor position and movements of skeletal muscles and joints. | proprioceptors |
at a synapse, neurotransmitters are released from the __ cell. | presynatic |
___ are cells that produce, circulate, and monitor cerebrospinal fluid (CSF) | Ependymal cells |
phagocytic cells in neural tissue of the CNS are: | microglia |
in the preipheral nervous system, ___ produce the myelin sheath. | oligodendrocytes |
___ are the most numerous of the neuroglial cells. they form the blood-brain barrier. | astrocytes |
___ are neuroglial cells that surround neuron cell bodies in ganglia of the perpheral nervous system. they oxygen, carbon dioxide, and nutrient levels for the associated neurons. | astrocytes |
Nonmyelinated regions along a myeliated axon are called: | internodes |
a shift in the resting membrane potential from -70V to -61V is called: | a graded potential |
In the generation of an action potential, voltage-regulated sodium gates open at ___ millivolts and a tremendous amount of sodium ions diffuse into the cell. | -60V |
Sodium ions spread along the cytoplasm at the surface of an axolemma by: | local potentials |
At ___ millivolts, the voltage-regulated sodium gates close and voltage-regulated potassium gates open. | +30 |
when the voltage-regulated gates open, potassium floods outward and may create a moment of ____. | hyperpolarization |
The ___ is (are) responsible for maintaining resting membrane distributions of sodium and potassium across the neuron cell membrane. | sodium-potassium pump |
The period of time in which a stimulated neuron cannot respond to another stimulus is called the: | absolute refractory period |
Along myelinated axons, action potentials travel rapidly by ___. | saltatory propagation |
Action potentials travel fastest long ___ fibers. | type A |
the neuromuscular junction is an example of a ___. | cholinergic synapse |
the most important excitatory neurotransmitter in the brain is: | dopamine |
inadequate ___ production may be responsible for many cases of chronic depression. | serotonin |
Created by:
apurcel1
Popular Anatomy sets