9. Neurobiology Flashcards
The functional unit of the NS is a _
neuron
Special senses are _ neurons
bipolar
Pseudounipolar neurons are usually _ neurons
sensory
Multipolar neurons are mainly _ neurons
motor
Pseudounipolar neurons don’t have _, these are instead _ on the receiving end of the axon
dendrites
receptors
T/F Oligodendrocytes help to maintain the blood brain barrier
False (astrocytes)
_ cells provide nutrition to the cell bodies in ganglion in the PNS
Satellite
How many vesicles are formed at 4 weeks and what are they in correct order?
3
Prosencephalon
Mesencephalon
Rhombencephalon
How many vesicles are formed at 5 weeks and what are they in correct order?
5 Telencephalon Diencephalon Mesencephalon (Midbrain) Metencephalon Myelencephalon
Telencephalon develops into the _ and _
cerebral hemispheres
lateral ventricles
Diencephalon develops into _, _, and _
Thalamus
hypothalamus
3rd ventricles
Mesencephalon develops into _ and _
cerebral aqueduct
periaqueductal gray
Metencephalon develops into _, _ and _
cerebellum
pons
4th ventricle
Mylencephalon develops into _ and _
medulla oblongata
4th ventricle
T/F CNs 1 and 2 develop from the mesencephalon
False (prosencephalon)
CN 3 develops from _
mesencephalon
CNs 4-12 develop from _
rhombencephalon
What are the arches for CNs 5, 7, 9, 10
b1
b2
b3
b4
What are the rhombomere sensory ganglion location for CN 5,7,9,10?
r2
r4
r6
r7
What are the rhombomere motor nucleus locations for CN 5,7,9,10?
2,3
4,5
6,7
7,8
Ventral horn of spinal cord has _ neurons while dorsal horn has _ neurons
motor
sensory
T/F The lateral horn involves autonomic nerves
True
The central canal is lined by _
ependymal cells
T/F There are 4 lobes in the brain
False (there are 5, the 5th lobe is the internal lobe that is responsible for emotions)
The brainstem is composed of 3 parts, the _
Midbrain
pons
medulla oblongata
Rexed’s laminae are what?
segmented out portions of the gray matter in the spinal cord
Lamina 2 is also called _ and looks like a gel substance
substantia gelatinosa
The dorsal horn is composed of segments _ to _
1 to 6
The lateral horn is composed of segment _
7
The ventral horn is composed of segments _ to _
8 to 10
