Intro to Nervous System Flashcards
Does assessment deal with afferent or efferent nerve pathways?
afferent
Does control deal with afferent or efferent nerve pathways?
efferent
Paracrine signaling
local, but different cells
Autocrine signaling
local, but same cell/ same cell type
Cell is both signaling and target cell -> like patting yourself on the back
Central Nervous System
brain and spinal cord
Peripheral Nervous System
skin and muscle
Autonomic Nervous System: Sympathetic
- thoracolumbar
- paravertebral ganglion
Autonomic Nervous System: Parasympathetic
- craniosacral
- distributed ganglion
What plexi are involved with the Enteric system?
- myenteric plexus
- tertiary plexus
- deep muscular plexus
- submucous plexus
- mucosal plexus
Supportive cells in the CNS?
- astrocytes
- oligodendrocytes
Supportive cells in the PNS?
- Schwann cells
- satellite cells
Most common first neurotransmitter?
glutamate
Most common second neurotransmitter?
acetylcholine
T/F: Reflexes are stereotypic.
True
What does “stereotypic” mean?
“to repeat without variation”
This means that a certain stimulus will always produce the same response
What is the Logic Gate of a nerve?
Axon Hillock
-final point of integration = past this point, there either will be a signal or there will not be a signal
Metabolic center of the nerve cell?
soma
Common Structural Motifs in Membrane Proteins?
- Sodium Channel Subunits
- Calcium Channel Subunits
- Potassium Channel Subunits
Role of Schwann cells?
myelinated axons in PNS
Role of satellite cells?
ganglion of PNS
Role of Oligodendrocytes in CNS?
form myelin sheaths
Role of Microglia?
phagocytic scavengers
Role of Ependymal cells in CNS?
- line internal brain and spinal cord cavities
- contribute to cerebrospinal fluid
- possibly serve as neural stem cells
