Chapter 3: Nervous System Organization Flashcards
1
Q
SNS
A
- somatic nervous system
- spinal and cranial nerves
2
Q
self-repair
A
- very limited in CNS
3
Q
meninges
A
- dura mater (outer)
- arachnoid membrane
- pia mater (inner)
4
Q
CSF
A
- cerebrospinal fluid
- in subarachnoid space
5
Q
brain’s blood supply
A
- two carotid arteries
- two vertebral arteries
6
Q
stroke
A
- by blood clot in arteries
- worse when at the base of arteries
7
Q
stem cells
A
- number remains constant in adults
- progenitor cells
- precursor cells
- blasts, either neuro- or gliablasts
8
Q
types of neurons
A
- sensory
- interneuron
- motor
9
Q
bipolar neuron
A
- a sensory neuron
- speeds information conduction
10
Q
ependymal cells
A
- form choroid plexus
11
Q
astroglia
A
- provide support and nutrition
12
Q
microglia
A
- fight infections
- remove debris
13
Q
oligodendroglia
A
- insulate CNS neurons
14
Q
Schwann cells
A
- insulate PNS neurons
15
Q
reticular matter
A
- mix of cell bodies and axons
- net-like appearance
16
Q
ganglia
A
- clusters of cells in PNS
17
Q
ventricles
A
- two lateral ventricles in cortex
- thrid and fourth in brain stem and spinal cord
18
Q
cerebral aqueduct
A
- connects third and fourth ventricle
19
Q
prosencephalon
A
- telencephalon and diencephalon
20
Q
mesencephalon
A
- just the midbrain
