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Flashcards in Olfaction Deck (25):
0

What TWO (2) CONDITIONS must be met for a substance to be SMELLABLE?

1.) Must be VOLATILE or VAPOROUS at ORDINARY TEMPERATURES.

2.) Must be SOLUBLE in FAT or WATER solvents.

1

What are the SEVEN (7) CLASSES a of ORDOR?

1.) Camphorous
2.) Musky
3.) Floral
4.) Pepperminty
5.) Ether-Like
6.) Pungent
7.) Putrid

2

Give an example of a CAMPHOROUS ODOR.

Mothballs

3

Give an example of a MUSKY ODOR.

Heavy Oil

4

Give an example of a FLORAL ODOR.

Roses

5

Give an example of a PEPPERMINTY ODOR.

Peppermint

6

Give an example of an ETHER-LIKE ODOR.

Dry Cleaning Fluid

7

Give an example of a PUNGENT ODOR.

Vinegar

8

Give an example of a PUTRID ODOR.

Rotten Eggs

9

True or False: olfactory sense is more sensitive than taste.

TRUE,

OLFACTION is MORE SENSITIVE than taste

10

What are the TWO (2) CELL TYPES that make up the OLFACTORY EPITHELIUM?

Columnar Cells
Olfactory Cells

*see illustration*
*see HANDOUT*

11

At the BASE of the OLFACTORY CELLS, FIBERS group themselves in small bundles that PASS THROUGH OPENINGS in the ______________ of the ____________.

Cribform Plate
Ethmoid Bone

12

The ETHMOID BONE is found at the _____________ between ___________ at the ROOF OF THE NOSE.

Anterior BASE of CRANIUM
2 ORBITS

13

OLFACTORY FIBERS enter into the ____________.

Olfactory Bulb

*see HANDOUT*

14

OLFACTORY FIBERS end together in a SYNAPSE with ____________ neurons, the SYNAPTIC AREA is called a ___________.

SECOND-ORDER
GLOMERULUS

15

Cells who's DENDRITES synapse with FIRST-ORDER NEURONS in the GLOMERULUS are either __________ or _________ CELLS.

Mitral
Tufted

16

AXONS of MITRAL and TUFTED CELLS form the _______________.

Olfactory Tract

17

AXONS of MITRAL CELLS form the ________________.

Lateral Olfactory Stria (LOS)

18

AXONS of the TUFTED CELLS form the ______________.

Medial Olfactory Stria (MOS)

19

The LATERAL OLFACTORY STRIA goes ACROSS the ____________ SURFACE of the ____________ LOBE and terminates in the ____________ LOBE and the ___________.

Ventral
Frontal
Temporal
Amygdala

20

The _____________ is the MAJOR sensory PATHWAY for SMELL.

Pyriform Cortex

21

BEFORE MITRAL cells FORM the LATERAL OLFACTORY STRIA, they send a number of recurrent COLLATERALS that CONNECT with ____________ cells.

Granule Cells

22

What are TWO (2) possible FUNCTIONS of GRANULE CELLS?

1.) Makes REPEATED FIRING of MITRAL and TUFTED cells possible.

2.) GRANULE cells INHIBIT succeeding IMPULSES from mitral and tufted cells.

*Fig.7.19 p.180*

23

This is known as SMELL BLINDNESS.

Anosmia

24

This is DISTORTION of the sense of SMELL.

Parosmia