20 - Non-Parasympathetic CNs Flashcards Preview

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Flashcards in 20 - Non-Parasympathetic CNs Deck (57)
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1

This CN modality provides special senses derived from ectoderm. Sight, sound, and balance.

Special Somatic Sensory (SSS)

2

This CN modality provides special senses derived from endoderm. Taste.

Special Visceral Sensory (SVS)

3

This CN modality contain muscles derived from pharyngeal arches.

Special Visceral Motor (SVM)

4

This CN modality provides general sensation from the viscera.

General Visceral Sensory (GVS)

5

This CN modality goes to smooth muscles of the gut tract and is autonomic motor.

General Visceral Motor (GVM)

6

This CN modality provides general senses from ectoderm (skin).

General Somatic Sensory (GSS)

7

This CN modality goes to skeletal muscles.

General Somatic Motor (GSM)

8

Cranial nerves typically have same basic structure as spinal nerves, such as...

Dorsal and ventral root
Dorsal root ganglion

9

Motor components of cranial nerves begin within the brain within motor nuclei, comparable to spinal cord _______ _______.

Anterior horns

10

Cell bodies of sensory fibers are located in...

Dorsal root (cranial) ganglia

11

Most cranial nerves, however, are not typical. Cranial nerves _____ and _____ are sensory tracts/nerves but have no dorsal ganglia or roots. Some cranial nerves are strictly motor and have no dorsal ganglia or roots.

CN I
CN II

12

______ ______ cranial nerves are actually tracts and have no motor nuclei and no sensory ganglia.

Special sensory

13

_______ cranial nerves begin in cranial motor nuclei. They have no sensory roots and no sensory root ganglia.

Motor

14

_______ cranial nerves have both cranial motor nuclei and sensory ganglia. Sensory ganglia are usually given specific names.

Mixed

15

List all the cranial nerves.

Olfactory (I)
Optic (II)
Oculomotor (III)
Trochlear (IV)
Trigeminal (V)
Abducens (VI)
Facial (VII)
Vestibulocochlear (VIII)
Glossopharyngeal (IX)
Vagus (X)
Accessory (XI)
Hypoglossal (XII)

16

What are the non-parasympathetic cranial nerves?

Olfactory (I)
Optic (II)
Trochlear (IV)
Abducens (VI)
Vestibulocochlear (VIII)
Spinal accessory (XI)
Hypoglossal (XII)

17

The olfactory nerve is made up of many fibers that pass from the upper third of the olfactory (nasal) mucosa. Olfactory receptor cells pass through ______ ______ to the olfactory bulbs.

Cribriform plate

18

What modality is the olfactory nerve?

SVS

19

Olfactory epithelium is located in the nasal cavity roof and made up of what type of epithelial cells?

Pseduostratified columnar epithelium without goblet cells

20

These are stem cells that give rise to immature olfactory cells.

Basal cells with pigment granules

21

Olfactory cells are _______ neurons, with the apical end projecting into the nasal cavity as a knoblike ending with nonmotile cilia. The cilia possess G-protein-linked ______-specific receptors.

Bipolar
Odor

22

Olfactory cells are bipolar neurons, with the basal end of the cell extending as an __________ axon, bundled with other similar axons through the ethmoid plate to mitral cells located in the olfactory bulb.

Unmyelinated

23

Olfactory cells senesce and are replaced from ______ cells.

Basal

24

This is located in the lamina propria and secrete odorant-binding protein. Odorant-binding protein binds to odorant molecule in nasal cavity.

Olfactory glands of Bowman

25

Olfactory _______ are slender extension of the forebrain.

Tracts

26

These are expanded endings of the olfactory tracts that lie on either side of the crista galli within the cribriform fossa. Sites where axons of olfactory neurons synapse with dendrites of mitral cells.

Olfactory bulbs

27

Axons of _______ cells form the major connecting tracts with the olfactory centers within the brain.

Mitral

28

What is the function of the olfactory nerve (CN I)?

Smell

29

This cranial nerve begins in the ganglionic layer of retina (not rods and cones) and exits the orbit through the optic canal.

Optic (CN II)

30

The optic nerve has 50 percent _________ in the optic chiasma near the pituitary gland and internal carotid.

Decussation