Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
|
3 neuron structure types
|
multipolar - bipolar - unipolar
|
|
|
multipolar number of process
|
many dendrites + 1 axon
|
|
|
multipolar cns/pns
|
cns/pns
|
|
|
multipolar are all ____ efferent neurons
|
motor
|
|
|
all multipolar are ____ neurons
|
association
|
|
|
multipolar neurons are most common in the ____
|
cns
|
|
|
bipolar number of processes
|
1 dendrite - 1 axon
|
|
|
bipolar cns/pns
|
pns
|
|
|
bipolar are located in ____ ____ organs
|
special sensory
|
|
|
bipolar neuron location examples
|
olfactory, mucosa, retina
|
|
|
unipolar number of processes
|
1 extension acting as axon + 1 dendrite
|
|
|
unipolar cns/pns
|
pns
|
|
|
unipolar neurons locations (2)
|
dorsal root ganglia + sensory ganglia on cranial nerves
|
|
|
unipolar neurons are mostly
|
afferent
|
|
|
3 neuron function types
|
afferent (sensory) - efferent (motor) - association (interneuron)
|
|
|
the nucleus of a neuron is located in the ____
|
soma
|
|
|
myelin is made of the membranes of ____ ____ & ____
|
schwann cells (pns) - oligodendrocytes (cns)
|
|
|
____ carry impulses away from the cell body of a neuron
|
axons
|
|
|
____ neurons are always sensory
|
afferent
|
|
|
____ neurons can be found in the retina of the eye
|
bipolar
|
|
|
schwann cells are only found in the ____ nervous system
|
peripheral
|
|
|
myelin ____ conduction velocity
|
increases
|
|
|
the ____ ____ ____ is an interruption in the myelin sheath which enhances conduction velocity by allowing saltatory conduction
|
node of ranvier
|
|
|
membranes and therefore myelin are made of ____ & ____
|
protein - lipid
|
|
|
vesicles are membrane-bound sacs that contain
|
neurotransmitters
|
|
|
the cell bodies of neurons often cluster together. Clusters of cells bodies in the cns are called ____ & in the pns these clusters are called
|
nuclei - ganglia
|
|
|
synonyms for sensory and motor are ____ & ____
|
afferent - efferent
|
|
|
outer membrane of the axon is called
|
axolemma
|
|
|
what substance is myelin sheath composed of
|
lipid - protein
|
|
|
what substance are nissl bodies composed of
|
rough ER
|
|
|
what is the function of the node of ranvier
|
saltatory conduction - speeds up impulse
|
