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;
16 Cards in this Set
- Front
- Back
|
Describe the Olfactory System Receptors.
|
Bipolar olfactory sensory receptor neurons are located in cribiform plate of ethmoid bone
|
|
|
Olfactory neurons have single dendrites that terminate in olfactory mucosa as ____________.
|
olfactory knobs---cilia arise from the knobs
|
|
|
Describe the olfactory neuron axon.
|
SINGLE Unmyelinated axon
|
|
|
What is the fxn of Sustenacular Cells?
|
supporting cells- in olfactory epithelium and help in detoxifying chemicals that come in contact with olfactory epi.
|
|
|
Describe the Sensory transduction of olfaction.
|
Bowmans gland secretes Olfactory binding protein--carries/concentrates odorant around cilia--receptor/odorant complex is formed--activates G protein-- Ca+ channels opened--Cilia are depolarized--AP is generated--conducted along axon of Olfactory sensory neuron
|
|
|
What discriminates amongst odors?
|
Olfactory Bulb
|
|
|
What modulates the activity of mitral and tufted cells?
|
Granule cells
|
|
|
What are clusters of nerve terminals from olfactory sensory neurons, dendrites of tufted cells, mitral cells, and periglomerular cells?
|
Glomerular Layer
|
|
|
Lateral Olfactory tract axons that project to the Hippocampus are called ________________.
|
Perforant Cortex
|
|
|
What tract do the axons from mitral cells and tufted cells exit?
|
Lateral Olfactory Tract--LARGEST BUNDLE
|
|
|
Mitral and tufted cells that exit ipsi to basal limbic forebrain such as Substantia Innonmata, Medial septal Nucleus, and Stria Terminalis run what tract?
|
Medial Olfactory tract
|
|
|
What recevies sensory signlas from mitral and tufted cells and relays them to CONTRA olfactory bulb via the Anterior Commissure?
|
Anterior Olfactory tract
|
|
|
What send recurrent collateral fibers to ipsi olfactory bulb, crossed fibers to CONTRA Anterior Olfactory Nucleus and synapse on Internal Granule cells?
|
Anterior Olfactory tract
|
|
|
What is anosmia?
|
loss of olfactory sensation
|
|
|
What is hyposmia?
|
reduction of olfactory fxn
|
|
|
What is cacosmia?
|
olfactory hallucination of unpleasant smells (Uncinate Fit) generated by temporal lobe seizure
|
