Lecture 12 Taste and Smell

Stimuli that activates the taste sensation are called _____.

Taste is also called ______.

Five tastes and portion of tongue:

Taste cells are located in taste buds. There are about ______ taste celle per taste bud. They wear out every _____. Total of _______ taste buds.

T/F: The taste cells are first order neurons.

______ papillae are best stimulated by bitter, while ____ papillae are best stimulated by sour and salty, _____ papillae are best stimulated by sweet, salty and umami.

The circumvallate papillae and foliate papillae are located in the _____ of tongue, they are innvervated by ________.

The fungiform papillae are located in the _____ of the tongue, they are innervated by ________.

_______ is in charge of the larynx, epiglottis, and pharynx movements.

T/F: There is NO decussation in taste pathway.

Map out the 3-neuron road map of taste

Cell body of 1st degree sensory neuron lie in the ________.

Location of 2nd degree cell body lies in the ____________ located in the (caudal/rostral) medulla.

The tract where the 2nd degree axons ascend is ________.

2nd degree neuron synapses with 3rd degree neuron in the _______ of thalamus.

Where does the 3rd degree neuron go to?

Solitary nucleus is also called the _______. Frontal operculum and insula are also called the ______.

Map out the pathway of taste on
1) cross-section cuts of the brainstem.
2) 2-d sketches of brainstem and tongue.

Solitary tract contains the (1st degree/ 2nd degree) axons from CN VII, IX, and X)

Solitary nucleus contains (1st degree/ 2nd degree) cell bodies.

Identify central tegmental tract on the cross-section of the rostral medulla.

Identify location of central tegmental tract in caudal and rostral pons/mid brain

The 3rd order axon passes through the _____ limb of the internal capsule.

Air from outside into nose is called _______ while air from pharynx to nose is called ______.

Olfactory sensory neurons are _____receptors.

The 1st order sensory neurons are (monopolar/bipolar), (myelinated/unmyelinated) neuron.

The olfactory nerve endings reside in the _________.

The olfactory nerve fascicles have to travel through _____ to get into the telencephalon.

T/F: There is no ganglion for the olfactory nerves.

The olfactory bulb lies in the ___________.

The olfactory circuit is a __-neuron circuit, with ___ order neurons.

What are the goals of the olfactory circuit?

Screwed with my good friend's experence k

Draw the odorant pathway. Which tract does it travel in?

How many different orders can we smell?

Turn over rate of olfactory neurons.

The dendrites synapse with the 2nd order neuron's in the ________.

We can differentiate about ______ ordors.

Collection of active glomeruli for a specific ordor is called the _________.

Where do the 2nd order axons in the olfactory tract project to?

______ is associated with sharpening detection of chemicals

____ is associated with emotion related to the smell.

_______ is associated with visceral responses such as ANS, appetite, and behavior related to the smell.

__________ is associated with 1st degree sensory perception.

_________ is associated with memory with the smell.

The olfactory tract splits into ____ and ___________.

Locate the uncus, piriform cortex, and other structures in the inferior view of the cerebrum.