Cranial Nerve 1

Question 1

What is another name for the Cranial N. 1?

Answer 1

Olfactory Nerve

Question 2

What is the name for primary sensory neurons?

Answer 2

Olfactory (bipolar) neurons

Question 3

Where are primary sensory neurons located?

Answer 3

Lining superior part of the nasal cavity

Question 4

What are the cells called that support the primary sensory neurons?

Answer 4

Supporting cells

Question 5

How many olfactory nerves convey info to olfactory bulbs?

Answer 5

10-20

Question 6

True or False

Axons in the olfactory neurons are myelinated.

Answer 6

False

Question 7

What are olfactory neurons covered by?

Answer 7

Schwann cells

Question 8

Olfactory nerves pass thru what bone?

Answer 8

The ethmoid (cribiform plate)

Question 9

True or False

The olfactory nerves enter the olfactory bulb and synapse on bipolar cells

Answer 9

False
Mitral cells (silly Brenna)

Question 10

What are formed at the synapses of mitral cells?

Answer 10

Synaptic glomeruli

Question 11

What are the names of the secondary sensory neurons?

Answer 11

Mitral cells

Question 12

Where are the mitral cells located?

Answer 12

Olfactory bulb

Question 13

True or False

Mitral cells relay information Ant. Via olfactory tract.

Answer 13

False

Posterior

Question 14

Where does the olfactory tract relay information?

Answer 14

Anterior perforated substance

Question 15

Anterior perforated substance splits into it?

Answer 15

Medial and Lateral olfactory striae

Question 16

Where do the Medial Stria fibers travel to?

Answer 16

Crosses the midline via the anterior commisure and travel to the opposite olfactory bulb

Question 17

Lateral stria fibers carry information where?

Answer 17

The primary olfactory cortex
1.Periamygdaloid
2.Preperiform area
3.Uncus (Brdmn 34)
Which is on the medial aspect of the temporal lobe

Question 18

How many neurons are in the C.N.1 Pathway?

Answer 18

2 Neurons

Question 19

True or False

C.N.1 bypasses the Thalamus

Answer 19

TRUUUUUUUUUUUUUUUE

Question 20

What nerve in C.N.1 has an autonomic function? Some believe this nerve helps with the saying “I can smell fear”

Answer 20

Terminal nerve

Question 21

What nerve is poorly developed in humans? It is very important for tracking prey.

Answer 21

Vomeronasal nerve

Question 22

What is it called when you have losses your sense of smell?

Answer 22

Anosmia

Question 23

True or False

Loss of smell is common

Answer 23

False

Rare

Question 24

When you see a patient with a skull fracture and they have fluid dripping out of there nose. What is the thing you will see on a Kleenex if you drip the fluid on there?

Answer 24

Halo sign

Question 25

What is the fluid leaking out if you have a Halo sign?

Answer 25

CSF