[RECALLS] BATCH 2022 - Intro and Organization and Embryology of the Nervous System Flashcards
What germ layer does the brain/nervous system originate from:
Ectoderm
What separates the supratentorial from infratentorial:
Tentorium cerebelli
What is derived from the mesencephalon:
All of the above: Tectum, Tegmentum, Cerebral aqueduct and Cerebral peduncle
Brainstem originates from:
Mesencephalon and rhomoboencephalon only
Surgeon operating exposes cervical part of spine. How many spinal nerves expected to see?
8 cervical nerves
Function of temporal lobe:
Hearing
CSF is produced by:
Ependymal cells
Which is supratentorial in location?
a. Parietal lobe
b. Spinal cord
c. Medulla
d. Midbrain
a. Parietal lobe
Unique characteristic of type C fibers
Unmyelinated
Most common cause of neural tube defects:
Folic acid deficiency
Area where all 4 lobes meet:
a. Thalamus
b. Fourth ventricle
c. Pineal gland
d. Insular cortex
d. Insular cortex
What day does anterior neuropore close develops into 3 primary vesicles:
25 days
Important factor in organization and function of the brain:
A. genes
B. experience
C. vitamin deficiency
D. all
A. genes
Best describes myelin:
A. CNS myelin by Schwann cells
B. PNS myelin by oligodendrocyte
C. Present in dendrites
D. Causes fast transport of signals in neurons
D. Causes fast transport of signals in neurons
Where does the upper and lower motor neuron meet:
A. Anterior horn
B. Posterior horn
C. Lateral horn
D. Dorsomedial horn
A. Anterior horn
What connects nerve fibers:
Synapse
Characterstic of dendrite rather than axon:
a. one per cell
b. longer process of the neuron
c. maybe covered in myelin
d. contains Nissl bodies in cytoplasm
d. contains Nissl bodies in cytoplasm
Cell body found in:
Gray matter
Axons found in:
White matter
Which glial cell should not be found:
Macroglia
Which is not part of the peripheral nervous system:
a. muscle
b. neuromuscular junction
c. spinal cord
d. peripheral nerve
c. spinal cord
What are the primary brain vesicles:
Prosencephalon
Mesencephalon
Rhomboencephalon
