FINAL EXAM Lecture 18 Olfaction and the Limbic System

Question 1

The Olfactory System uses this fiber type

Answer 1

SVA

Special Visceral Afferent

Question 2

The receptors of the olfactory system are located in ______ ______ within the ______ nasal cavity.

Answer 2

Olfactory Epithelium

Upper

Question 3

First order neurons in the olfactory system are also known as: _____ _____

The ____ olfactory neurons are located in the _____ _____. The _______ axons of these neurons gather into bundles that collectively form the ______ ______. Olfactory nerve bundles penetrate the _____ plate of the ______ bone to enter the ______ _______.

Answer 3

Receptor Cells

Bipolar

Olfactory Epithelium

Non-Myelinated

Olfactory Nerve

Cribiform

Ethmoid

Olfactory Bulb

Question 4

Second Order Neurons in the hypothalamus are also known as _____ _____ in the olfactory bulb.

The axons of these cells form the ____ _____ ( ____ ).

[Histologically, the olfactory bulb features several layers, including superficial to deep, a ______ _____, where olfactory nerve fibers synapse on the dendrites of ____ ____; a ______ _____ ____ and a _____ _____.]

Answer 4

Mitral Cells

Olfactory Tracts (Striae)

Glomerular Layer

Mitral Cells

Mitral Cell Layer & a Granuel Cell Layer

Question 5

The ____ ____ terminates by bifurcating into a medial and lateral olfactory stria, which project, respectively, to the ____ _____ ( ________ reflexes) and ______ ______.

Answer 5

Olfactory Tract

Septal Area (Olfactovisceral)

Piriform Cortex

Question 6

5 Limbic Structures

Answer 6

1. Hippocampus
2. Septum
3. Amygdala
4. Hypothalamus
5. Thalamus

Question 7

10 Clinical Signs Associated with Damage to the Limbic Strucutres:

Answer 7

1. Dullness
2. Lethargy
3. Sleepiness
4. Stupor or semicoma
5. Dementia
6. Failure to recognize owners or familiar environment
7. Inability to Learn
8. Destructive Behavior
9. Irritability of aggressiveness
10. Propulsive pacing or circling

Question 8

Functions of Limbic System

2 main

Answer 8

Emotions of importance to survival

processes involved in Learning and Memory