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NURS403 Exam Questions And Correct Answers
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NURS403 Exam Questions And Correct AnswersNervous system first divided into peripheral
central
Subdivisions of peripheral nervous system - Answer autonomic and somatic
12 pairs of cranial nerves
31 pairs of spinal nerves
Autonomic system - Answer "involuntary"
fibers that connect the CNS w/ smooth muscle, cardiac muscle, internal organs and
glands
parasympathetic
sympathetic
Somatic nervous system - Answer "voluntary"
fibers that connect the CNS w/ structures of the skeletal muscle and skin
Neurons - Answer basic functional unit w/in CNS
perform data integration and transmit signals
10 billion
Neuroglia - met the support infrastructure of the NS with protection and providing a
structural framework for neurons
4 types: astrocytes, oligodendroglia, ependyma, microalgia
,6-10 more neuroglia than neurons
Macrostructures of the NS -Answer brain and spinal cord
Cranium -Answer outermost protective portion that encases the portions of the CNS
foramen magnum is the large opening at the base where the brainstem connects to the
spinal cord
Meninges - protection 3 layers (dura, arachnoid, pia)
lie below the cranium
for: protection
Dura mater - outermost meningeal layer
fibrous layer that protects/supports CNS, nerves and vascular structure
Arachnoid mater - surrounds brain tissue but delicate and fragile
arachnoid villi can absorb CSF
Pia mater - adheres directly to brain tissue
rich in blood vessels
3 spaces - epidural
subdural
subarachnoid
Epidural space - between dura mater and skull
, Subdural - Answwer between dura and arachnoid
Subarachnoid - Answer between arachnoid space and pia mater
Macrostructure-ventricular system - Answer compromised of four canals that contain
CSF and lined with ependymal cells
foramen of monroe is the communication between the 2 lateral ventricles
two large lateral ventricles that lie within each hemisphere
3rd ventricle located above the midbrain
4th between brainstem and cerebellum
Characteristics of CSF - Answer clear, colourless, odourless
contains:
protein, glucose, electrolytes, and water
fills ventricles and subarachnoid space to act as shock absorber
secreted by chlorus plexus
How much CSF is produced by choroid plexus? - Answer 500ml.day
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