Flashcards in 01a: Neuroanatomy Intro Deck (23)
List the major neuron types, distinguished on basis of (X). Star the most common type.
X = morphology;
T/F: All signals traveling through neurons are in form of action potentials.
T/F: Action potentials are not produced in Bipolar Neurons.
Bipolar neurons are primarily found in which human structure(s)?
2. Olfactory bulb
True unipolar neurons are primarily found in which human structure(s)?
None - not found in humans
Psuedo-unipolar neurons are primarily found in which human structure(s)?
Sensory ganglia (DRG, CN, etc.)
(X) neuron type is specialized for transmission of electrical signals.
X = pseudo-unipolar
List pseudo-unipolar neuron process(es) and their associations. Star those with morphology like axon. Put an (M) next to those that are myelinated.
1. Input (peripheral receptor)* (M)
2. Output (CNS)* (M)
T/F: Multipolar neurons have multiple axons and dendrites.
False - multiple dendrites, one axon
There is/are typically (X) number of NT associated with any one neuron.
X = one
List the main excitatory NT.
List the main inhibitory NT.
List anatomical characteristics of excitatory synapse (as seen by EM).
1. Wide cleft
3. Asymmetric density in pre/post-synaptic membranes
4. Round vesicles
List anatomical characteristics of inhibitory synapse (as seen by EM).
1. Pleomorphic (oval) vesicles
3. Narrow cleft
4. Symmetric density in pre/post-synaptic membranes
Asymmetry in (excitatory/inhibitory) neurons refers to:
Post-synaptic membrane more dense than pre-synaptic membrane
Axons of (X) contribute to named tracts (i.e. corticospinal).
X = relay cells
Axons of (X) tend to stay within vicinity of parent cell body. They're typically (excitatory/inhibitory).
X = interneurons
R cerebral hemisphere processes sensory info from (R/L) side of body and produces motor commands to (R/L) side muscles.
R cerebellar lobe processes sensory info from (R/L) side of body.
Thalamus relays information to:
Funiculi refers to:
Area of SC white matter that contains a number of different pathways
Fasciculi refers to:
Grouped axons from given nucleus that travel together