Nervous System (in gen)
What direction is afferent?
What direction is efferent?
afferent: toward brain
efferent: away from brain
The neuron is supported by 6 glial cells.
How many in CNS and how many in PNS?
4 in CNS
2 in PNS
Glial Cells-
What is the most numerous glial cell?
astrocytes
Somatic motor efferent neurons innervate what type of muscle?
skeletal muscle
Which cell makes CSF (cerebrospinal fluid) from blood (the capillary bed)?
Ependymal Cells
(these are glial cells in the NS, and CSF surround brain for cushion/buouncy or shock absorption)
Which division is rest and digest?
parasympathetic
Neurons-
Located between dendrities axons:
cell body (has nucleus & ER)
Glial Cells-
Which cell helps maintain the Blood-Brain-Barrier?
Astrocyte
(hand picking what nutrients can leave the blood to enter neurons & BBB)
*also functions to maintain ECM nutrients*
vasoconstriction is likely caused by
sympathetic autonomic motor
What cell does the myelination in the CNS?
oligodendrocytes
Which division is fight or flight?
sympathetic
neurons structure-
these type of neurons are in all cutaneous receptors (ruffini, Meissners for example). No integration, just going straight thro:
unipolar
Glial Cells-
What cell does the myelination in he PNS?
neurolemmocytes (Schwann cells)
* compare to oligodenorocytes in CNS (COPS)
arrector pili muscles innervated by:
Sympathetic
autonomic motor efferent
What is the functional/structural unit of the Nervous System?
neuron
Which division uses efferent & afferent neurons?
both!
Neuron structure-
Heavy integration, high surface area to listen to many cells.
Multipolar (good in brain)
What are the glial cells of the CNS?
oligodendrocytes
microglia
astrocyte
ependymal cells
The heart is innervated by what?
sympathetic Autonomic Motor efferent
what does oligo stand for?
few, scanty (reaches many other axons)
Which division does Duncan call "functional deviation from homeostasis"?
sympathetic
T/F: Oligodendrocytes myelinate the neurons heading to the kidneys.
FALSE
Oligo are only in CNS (not PNS)
COPS mneumonic
What are the glial cells of the PNS?
satellite cells
neurolemmocytes (schwann cells)
The sympathetic nervous system uses what kind of neurons to innervate sweat glands?
autonomic motor efferent neurons
Autonomic motor efferent neurons can innervate:
glands