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Exam 4 review BIO 227 Flashcards | StudBud
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Exam 4 review BIO 227
Exam 4 review BIO 227
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Answers
1
Which glial cell helps produce and circulate CSF?
ependymal
neurons
astrocytes
microglial
2
____ summation occurs when a single presynaptic neuron repeatedly releases neurotransmitter
spatial
temporal
3
A drug that blocks acetylcholinesterase would...
increase attention span
decrease attention span
4
Match the action to the location of the brain responsible: sudden startled movements due to visual or auditory stimuli
cerebral nuclei
midbrain
cerebellum
5
The peripheral nervous system is made up of nerves and ganglia
False
True
6
When does neurulation begin?
3rd week of embryonic development
end of the 4th week of embryonic devleopment
puberty
immediately upon conception
7
Most gyri and sulci are present by birth
True
False
8
hyperpolarization is caused by an excess opening of ____ channels
sodium
calcium
potassium
9
The telencephalon becomes the...
cerebrum
cerebellum
hypothalamus
midbrain
10
Synaptic knobs of a neuron have what function?
they conduct graded potentials to the initial segment
they release neurotransmitter into the synaptic cleft
they recieve graded potentials from dendrites
they produce synaptic vesicles containing neurotransmitter
11
A fly landing on your arm would trigger which type of receptors?
somatic
visceral
12
The wernicke area aids in ____, while the broca area helps with ____
olfactory senses, auditory processing
auditory processing, olfactory senses
the ability to understand language, speech production
speech production, the ability to understand language
13
Oligodendrocytes myelinate the PNS
False
True
14
The primary motor cortex controls skeletal muscle activity on same side of the body
True
False
15
Which segment includes the axon hillock?
inital
receptive
conductive
transmissive
16
A(n) ____ neuron has no axon/it can not be differentiated from the dendrites
unipolar
multineuron
bipolar
anaxonic
17
Which of the following is part of the PNS? (choose multiple)
the brain
microglia
the spinal cord
satellite cells
neurolemmocyte
ganglia
18
Which glial cells are located only in the CNS? (choose multiple)
schwann cells
neurolemmocytes
oligodentrocytes
astrocytes
microglia
ependymals
19
Match the action to the location of the brain responsible: riding a bicycle
cerebellum
midbrain
cerebral nuclei
20
Which of the following is
not
a function of the hypothalamus?
initaites involuntary skeletal movement
controls endocrine system
controls autonomic nervous system
regulates sleep wake cycles
21
Which embryonic layer gives rise to the neural plate?
mesoderm
ectoderm
endoderm
22
The diencephalon becomes the...
pons and cerebrum
medulla oblongata
thalamus, hypothalamus, epithalmus
midbrain and pons
23
The generation of IPSP begins in the receptive segment
False
True
24
Association fibers
connect regions within the same hemisphere, while
commissure fibers
connect different hemispheres
False
True
25
The blood brain barrier is reduced in the
choroid plexus
to allow for the production of CSF
True
False
26
At an electrical synapse, presynaptic and postsynaptic membranes interface through which structure?
gap junctions
neurotransmitters
neurofibril nodes
terminal extensions
27
The _____ is composed of multiple cerebral and diencephalic structures that collectively process and experience emotions
limbic system
reticular activating system
28
The difference between Multiple Sclerosis and Gullian-Barre syndrome is the nervous system they effect...
MS affects the PNS, while Gullian-Barre affects the CNS
MS affects the CNS, while Gullian-Barre affects the PNS
29
Where does cerebral spinal fluid circulate? (choose multiple)
ventricles
arachnoid space
subarachnoid space
dura mater
30
White matter
is made up of neuron cell bodies, dendrites, and
un
myelinated axons
False
True
31
The
sensory homunculus
of the primary somatosensory cortex represents the...
distribution of sensory receptors on the body
organization of taste buds on the tongue according to taste sensitivity.
motor control of various body movements in the brain
32
Potassium is the most important factor in establishing the specific value of the resting membrane potential.
True
False
33
EPSPs are caused by the movement of what ions?
Na+ out of the cell
Na+ into the cell
K+ into the cell
both Na+ and K+ into the cell
34
Current is ____ related to voltage and ____ related to resistance (Ohm's Law_
Inversely, directly
directly, inversely
35
The ________ coordinates and fine-tunes skeletal muscle movement initiated by the cerebrum
cerebellum
brainstem
midbrain
cerebrum
36
Which neurons are located only within the CNS?
sensory
afferent
glial
interneurons
37
The cardiovascular and respiratory center are located within the....
midbrain
cerebellum
medulla oblongata
pons
38
Which type of neuronal pool utilizes feedback to repeatedly stimulate the circuit?
parallel-after-discharge circuit
reverberating circuit
converging circuit
diverging circuit
39
CSF is formed by the
choroid plexus
in each ventricle, and had
more
Na+ and Cl- than plasma.
True
False
