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Duplicate of CH 11 and Part of CH 12 Flashcards | StudBud
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Duplicate of CH 11 and Part of CH 12
Duplicate of CH 11 and Part of CH 12
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chapter 11 nervous system anatomy and physiology review
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Which of the following is NOT a function of the nervous system?
Sensory Input
Motor Output
Integration
Protection
2
If the cerebral cortex is the site of the conscious mind, what does it control? (3 correct answers)
sensory areas
voluntary movement
involuntary movement
motor areas
3
Which cell lines the central cavities of the brain and spinal cord?
Microglia
Astrocytes
Oligodendrocytes
ependymal cells
4
Which of these is true when a neuron is at rest
Inside is positive
There is no voltage
Outside is negative
Inside is negative
5
Which of the following defines integration in the nervous system?
process and interpretation of sensory input to motor output
activating effector organs
monitoring changes both inside and outside the body
increasing level of one substance in response to decrease
6
A neuron w/ many nerve fibers arising from its cell & that carries impulses away from the brain
Mutlipolar
Bipolar
Unipolar and sensory
Multipolar and motor
7
Which of these is NOT a sensory area of the cerebral cortex?
Broca's area
Somatosensory association cortex
Primary auditory cortex
Visual association area
8
Which of the following is NOT a function of myelin
to recapture and recycle released neurotransmitters
to electrically insulate nerve fibers
to protect nerve fibers
to increase the speed of transmission of nerve impulses
9
Which of the following is NOT true about the CNS?
It has both grey and white matter
the central cavity is surrounded by gray matter
brains regions: cerebral hemispheres, diencephalon, brain stem, &cerebellum
The diencephalon consists of the midbrain, pons, and medulla oblongata
10
Which is NOT true about the brain hemispheres composition
the 3 regions are cerebral cortex, white matter, and basal nuclei
Cerebral cortex is the site of the conscious mind
Cerebral hemispheres form superior part of brain
frontal lobe is found the temporal, parietal, and insula lobes
11
The point at which an impulse from one nerve cell is communicated to another nerve cell is the
Axon hillock
Synapse
Receptor
Effector
12
CSF-filled chambers that are continuous to one another and to central canal of spinal cord would be lined with...
white matter
oligodendrocytes
neuron cell bodies
ependymal cells
13
Which is true about cerebral cortex?
The cerebral cortex is made up of white matter
The motor area controls voluntary movement and sensory awareness
The cerebral cortex is only associated with sensory awareness
Each hemisphere is concerned with contralateral (opposite) side of body
14
At rest,__ ions are most abundant on the outside cell, while _ ions are on the inside
Potassium, sodium
Potassium, Calcium
Sodium, Potassium
Calcium, Phosphate
15
What type of current flows in the cell during repolarization
Sodium
Chloride
Potassium
Calcium
16
What is the main difference between autonomic and somatic nervous system?
Autonomic is a sensory division, Somatic is a motor division
Somatic affects hollow organs, Autonomic is skeletal muscles
Somatic is part of CNS, Autonomic is part of PNS
Autonomic is involuntarily controlled, Somatic is voluntary
17
Gray matter is composed of (2 correct answers)
both myelinated and unmyelinated axons
short unmyelinated axons
neuron cell bodies
mostly myelinated axons
18
Surface markings on the cerebral hemispheres include
gyri
which are ____ while
sulci
are ____ .
the cerebral hemisphere does not have surface markings
shallow grooves; deep grooves
ridges; shallow grooves
shallow grooves; ridges
19
Which of the following are the main input regions of a neuron?
Axons
Neurofibrils
Ganglia
Dendrites
20
Which is associated with increased conduction velocity (speed) in an axon?
increased number of dendrites
large diameter
absence of myelin
small diameter
21
Which glia cells are small, thorny, and phagocytize microorganisms/debris?
Astrocytes
Schwann cells
Microglia
Oligodendrocytes
22
Spatial summation occurs when
multiple local potential at same synapse
multiple potentials at the same time from different locations
multiple local potentials at the same time
EPSP activated in rapid fire
23
Neuron won't respond to 2nd stimulus of equal strength to 1st to which it already responded
Because the neuron is myelinated
Action potential is an all or none event
Because the neuron is in absolute refractory period
Neurons are self propogating
24
A signal that lessens the chance of an action potential via hyperpolarization is an
dendritic signal
IPSP
calcium efflux
EPSP
25
Which glia cells are the most abundant and anchor neurons to capillaries?
Schwann cells
Oligodendrocytes
Astrocytes
Microglia
26
What are the 5 brain hemispheres?
Frontal, posterior, teporal, occipital, and insula
Frontal, parietal, temporal, occipital, and cortex
Frontal, parietal, temporal, occipital, and insula
frontal, anterior, temporal, occipital, and insula
27
Which of the following events is NOT involved in a chemical synapse
Neurotransmitters bind to the postsynaptic receptors
Calcium channels open in the presynaptic region.
Ions flow directly from one neuron to the next.
ion channels open in postsynaptic neuron
28
An IPSP is inhibitory because
Changes threshold of neuron
It hyperpolarizes the post synaptic membrane
Reduces amount of NT released
Prevents calcium ion entry
29
The cells that conduct impulses towards the brain are
neuroglia
motor neurons
interneurons
sensory neurons
30
Sulci and fissures are both types of grooves on the cerebral hemispheres. How are they different?
fissures are more common than sulci
sulci are more common than fissures
fissures are shallow grooves while sulci are deeper grooves
sulci are shallow grooves while fissures are deeper grooves
