BIO 201 Final Study Guide Exam Questions and Answers 100% Pass
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Course
BIO 201
Institution
BIO 201
BIO 201 Final Study Guide Exam
Questions and Answers 100% Pass
action potentials can be generated by virtually all cells of the body because
all cell possess cell membranes - false, only cells with excitable
membranes can generate ap
The nodes or Ranvier are found only on myelinated, periphera...
action potentials can be generated by virtually all cells of the body because
all cell possess cell membranes - ✔✔false, only cells with excitable
membranes can generate ap
The nodes or Ranvier are found only on myelinated, peripheral neural
processes - ✔✔true
efferent nerve fibers may be described as motor nerve fibers - ✔✔true
a positive feedback cycle is the main force in the generation of graded
potentials at receptor ends - ✔✔false
a graded potential that is the result of a neurotransmitter released into the
synapse between two neurons is called a postsynaptic potential - ✔✔true
In myelinated axons the voltage-gated sodium channels are concentrated
at the nodes of Ranvier - ✔✔true
The two major classes of grade potentials are transmitter potentials and
receptor potentials - ✔✔False, generator potentials and post-synaptic
potentials
,If bacteria invaded the CNS tissue, microglia would migrate to the area to
engulf and destroy them - ✔✔true
Myelination of the nerve fibers in the CNS is the job of the oligodendrocyte
- ✔✔true
Neurons in the CNS are organized into functional groups - ✔✔true
Reflexes are rapid, automatic responses to stimuli - ✔✔true
Large-diameter nerve fibers conduct impulses much faster than small-
diameter fibers. - ✔✔true
During depolarization, the inside of the neuron's membrane becomes less
negative. - ✔✔true
the oligodendrocytes can myelinate several axons - ✔✔true
sensory neurons have long dendrites, while motor neurons have long
axons - ✔✔true
Enkephalins and endorphins are peptides that act like morphine. - ✔✔true
A stimulus traveling toward a synapse appears to open calcium ion
channels at the presynaptic end, which in turn promotes fusion of synaptic
vesicles to the axonal membrane. - ✔✔true
,Saltatory conduction occurs because of the presence of salt around the
neuron - ✔✔false, signal jumping from node to node along the axon
Neurons that are far away from the center of the neuron pool and that are
not easily excited by and incoming stimulus are in the discharge zone -
✔✔false, facilitated zone
Acetylcholine is not a biogenic amine - ✔✔true
A synapse formed between the axon ending of one neuron and the cell
body of another neuron is called an axosomatic synapse. - ✔✔true
Voltage is always measured between two points and may be called the
potential between these two points. - ✔✔true
the all-or-non phenomenon as applied to nerve conduction states that the
whole nerve cell must be stimulated for the conduction to take place -
✔✔false
Cell bodies of sensory neurons are located in ganglia lying outside the CNS
- ✔✔true
Strong stimuli cause the amplitude of AP generated to increase - ✔✔false
Is the main switch station for memory; if the right and left areas are
damaged, the past is lost. - ✔✔amygdala
In stage 3 sleep, these waves and delta waves appear. - ✔✔theta
, The largest nuclear mass in the midbrain - ✔✔substantia nigra
These are valvelike and protrude externally through the dura mater to
absorb cerebrospinal fluid into venous blood. - ✔✔arachnoid villi
he large tract that connects the right and left sides of the brain - ✔✔corpus
callosum
a temporary cessation of breathing during sleep found most commonly in
the elderly - ✔✔sleep apnea
a 24-hour cycle of sleep and wakefulness - ✔✔circadian
includes the thalamus, hypothalamus, and epithalamus - ✔✔diencephalon
The fourth ventricle is continuous with this part of the spinal cord. -
✔✔central canal
The infundibulum connects the hypothalamus to this. - ✔✔pituitary gland
is a conduction pathway between higher and lower brain centers and
houses nuclei for cranial nerves V-VII. - ✔✔pons
this type of memory requires practice, and is remembered by doing. -
✔✔skill
Sensory neurons enter the spinal cord via which type of horn? -
✔✔posterior
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