CNS Final Flashcards
What is part of the midbrain?
Mesencephalon
White matter is composed mainly of what?
Axons
Which ganglia is in the CNS?
Basil Ganglia
Which lobe controls emotion?
Limbic
What is the most common synapse?
Axo-dendritic
What part of the neuron transmits signals faster?
Axon
What is the most common connection in the body?
Synapse
Which is found in the PNS?
Schwann Cells
Which cells aids in cellular metabolism?
Astrocyte
Which cells are phagocytic?
Microglia
What is a derivative of neural crest cells?
Sensory Neurons
Where do neural crest cells originate?
Neural Fold
What is the largest part of the brain?
Telencephalon
Diencephalon gives rise to what?
Third Ventricle (3rd)
Mesencehalon (midbrain) gives rise to what?
Cerebral Aqueduct
What is surrounded by the pons, medulla, and cerebellum?
Fourth Ventricle
Which layer houses stem cells for the future spinal cord?
Ventricular Area
How much CSF is present at any given moment?
150mL
What connects brocca’s to wernicke’s area?
Arcuate association fibers
What artery runs in the lateral fissure?
Middle Cerebral
What artery supplies the lateral brain?
Middle Cerebral
What artery supplies the visual cortex?
Posterior Cerebral
What lobe contains the visual cortex?
Occipital Lobe
What deep vein goes to the straight sinus?
Great cerebral vein of Galen
Territory from which a sensory unit can be excited?
Receptive Field
Receptors that respond to stimuli from the internal environment?
Interoceptors
Which is not encapsulated?
Free ending
What type is follicular?
Mechanoreceptors
Which detects pain?
Nocioreceptors
What dermatome is present in the upper extremity?
C7
Where do fibers originate that form the gracile fasiculus?
?
Aging on motor units results in?
Loss of motor neurons from the cord and stem.
Which is a stretch receptor?
Muscle Spindle
What is the sensory fiber of a muscle spindle?
II
Which receptor responds to excessive contraction?
Golgi
Patellar reflex =
Mytactic
Which reflex has crossed effects?
Withdrawal
The recticular formation is located where?
In the tegmentum of the midbrain, pons, and medulla.
What provides levels of awareness?
Ascending Reticular Activating System (ARAS)
2nd order neurons are found in:
the Nucleus Cuneatus and Nucleus Gracilis