taste and smell part 2 Flashcards
Olfactory receptor cells
replaced every 1-2 months by basal cells in the olfactory epithelium
olfactory epithelium
olfactory receptor cells/neurons, basal cells and support cells
—– of olfactory receptor cells extend to the surface of the olfactory epithelium and terminate with a ——–region from which non-motile cilia project.
Dendrites of olfactory receptor cells extend to the surface of the olfactory epithelium and terminate with a rounded knoblike-region from which non-motile cilia project.
Cilia
extend into the mucus layer and possess receptors for odorant molecules
Unmyelinated axons of olfactory receptor cells to
olfactory filia to olfactory nerve
Unmyelinated axons of olfactory receptor cells
pass through the lamina propria
place where the olfactory axons synapse After passing through the cribiform plate
Receptors responsive to different odorant molecules are —– in the olfactory epithelium
Receptors responsive to different odorant molecules are intermingled in the olfactory epithelium
Unmyelinated axons of olfactory receptor cells travel through the —— —–(ethmoid bone) and terminate in the —–
Theses axons travel through the cribiform plate (ethmoid bone) and terminate in the olfactory bulb.
cribiform plate
ethmoid bone
At the level of the glomeruli, the axons of olfactory neurons carrying — olfactory information synapse in the — glomerulus.
©At the level of the glomeruli, the axons of olfactory neurons carrying similar olfactory information synapse in the same glomerulus.
tf CN1 will emerge thru ant cranial fossa
T thru cribiform plate
Neurons in the anterior olfactory nucleus cross via the —– commissure, to the —— olfactory bulb
Neurons in the anterior olfactory nucleus cross via the anterior commissure, to the contralateral olfactory bulb
Glomeruli respond selectively to — —– that characterize the complex odor.
Glomeruli respond selectively to one or two molecules that characterize the complex odor.
tf Odor information is carried along the olfactory tract (axons of mitral and tufted cells) to one areas
Odor information is carried along the olfactory tract (axons of mitral and tufted cells) to several areas
The relay through the thalamus occurs after afferents reach the —– —– —– but prior to olfactory info traveling to association cortex (eg. —–)
The relay through the thalamus occurs after afferents reach the primary olfactory cortex but prior to olfactory info traveling to association cortex (eg. orbitofrontal cortex
Convergence in the orbitofrontal cortex,
from the gustatory, somatosensory, olfactory and visual cortical areas
Mitral Cells and tufted cells
also contribute to the glomerulus)
Primary olfactory cortex
(piriform cortex, periamygdaloid cortex, anterior parahippocampal gyrus)
which of follwowing areas is not where Olfactory tract fibers terminate
Anterior olfactory nucleus
post olfactory nucleus
Olfactory tubercle
Amygdala
olf. bulb
post olfactory nucleus
and olf bulb
ability to discriminate and identify odors
Primary Olfactory Cortex
Primary Olfactory Cortex
is located in the uncus of the temporal lobe
Anterior parahippocampal gyrus
Primary Olfactory Cortex
perception of flavor
integration in orbitofrontal cortex
Taste-responsive cells of primate amygdala and hypothalamus
complex tastemediated behaviors
Hippocampus –
concerned with learning associated with feeding
projections from prim olfactory cortex
concerned with feeding behaviors
Hypothalamus
(has projections from primary olfactory cortex)
Bilateral lesions in the ventral medial hypothalamus
voracious appetite and resulting obesity
Bilateral lesions of the ventral lateral hypothalamus
failing to feed and wasting
