A&P CH8 Flashcards
Afferent vs efferent
Afferent = going towards, efferent = going away
Osteoblasts vs osteoclasts
Osteoblasts create, osteoclasts destroy
Nervous vs endocrine response speed
Nervous quick, endocrine slower
2 divisions of nervous system
Central (axial) and peripheral (appendicular)
3 components of nervous system process
Receptor, command center, and effector
division of PNS (2) and what are they
somatic (voluntary) and autonomic (involuntary)
def dendrite
receptors
def axon
carries outgoing signals to the synaptic terminals
def synaptic terminals
area where neuron communicates with other cells
3 types of neurons
unipolar, bipolar, multipolar
Def unipolar
dendrites and axons continuous, cell body off to side
Def bipolar
have 1 axon and 1 dendrite, cell body between, relay information from receptor to other neurons
Def multipolar
2+ dendrites, single axon
Where are multipolar found and what do they control?
Most common in CNS, controls all skeletal muscles
Unipolar found where?
Majority of sensory neurons in PNS
Bipolar found where?
Occur only in special sense neurons
Visceral motor neurons where? what kind of cell?
Touch some kind of organ, cardiac; autonomic
2 types of neuroglia
Satellite and Schwann
Axons surrounded by Schwann cells are…?
Neurilemma
What is saltatory propagation?
action potential jumps from node to node, fight or flight response
What is resting potential of a neuron?
-70 mV
Membrane potential also known as?
Resting potential
Extracellular membrane potential is…?
Sodium (+)
Intracellular membrane potential is…?
Potassium (-)
