Pterygopalatine fossa, Nasal Cavity, and Paranasal sinuses Flashcards Preview

Structure and Function Test 1 > Pterygopalatine fossa, Nasal Cavity, and Paranasal sinuses > Flashcards

Flashcards in Pterygopalatine fossa, Nasal Cavity, and Paranasal sinuses Deck (80):
1

The nose and bilateral nasal cavities are comprised of

Cartilage and bone

2

Divides the nasal cavities and forms their medial wall

-also consists of bone and cartilage

Midline nasal septum

3

The LATERAL walls of the nasal cavities typically contain three shell-like bones called

Concha or turbinates (Superior, middle, and inferior)

4

Increase the surface area of each nasal cavity

Superior, middle, and inferior concha

5

Inferior to each concha is a meatus that baffles air and receives drainage from one or more

Paranasal sinuses

6

The nose and nasal cavity function as a

Respiratory and olfactory organ

7

External air enters the nose through the

Nares

8

External air enters the nose through the nares and passes into the nasal cavities where it is

Warmed, filtered, and humidified

9

External air enters the nose through the nares where it is warmed, filtered, and humidified before it passes to the

Choanae to enter nasopharynx

10

Scent molecules are detected by olfactory nerves underlying the

Olfactory mucosa

11

Superiorly, the nasal cavities communicate with the

Anterior cranial fossa

12

Superiorly, the nasal cavities communicate with the anterior cranial fossa via the

Cribiform plate of the ethmoid bone

13

Inferiorly the nasal cavities communicate with the

Oral cavity

14

Inferiorly, the nasal cavities communicate with the oral cavity via the

Incisive foramen

15

What is transmitted between the nasal cavities and the anterior cranial fossa via the cribiform plate?

Olfactory nerves

16

The nasal cavities communicate superiolaterally with the

Orbit

17

The nasal cavities communicate superiolaterally with the orbit via the

Ethmoid bone

18

The nasal cavities communicate superiolaterally with the orbit via the ethmoid bone to transmit the

Ethmoidal branches of the nasocilliary nerve and opthalmic artery

19

The nasal cavities also communicate with the orbit via the

Bony nasolacrimal canal

20

The nasal cavities also communicate with the orbit via the bony nasolacrimal canal to transmit the

Nasolacrimal duct

21

The nasal cavities communicate with the oral cavity via the incisive foramen to transmit the

Nasopalatine nerve and accompanying blood vessels

22

The nasal cavities communicate with the pterygopalatine fossa via the

Shenopalatine foramen

23

The nasal cavities communicate with the pterygopalatine fossa via the sphenopalatine foramen to transmit the

Sphenopalatine artery, palatine nerves, and lateral and septal nerve branches

24

The mucosa overlying the olfactory area of the nasal cavity is innervated by

Olfactory nerve (CN I)

25

The SOMATIC SENSORY innervation of the RESPIRATORY mucosa is from branches of the

Opthalmic and maxillary divisions of Trigeminal nerve (V1 and V2)

26

Production of nasal mucous is stimulated by

Parasympathetic innervation of mucous glands

27

Describe the innervation of the mucous glands that produce nasal mucous?

Greater petrosal nerve (VII) to Pterygopalatine ganglion then to glands via branches of maxillary nerve (V2)

28

The anterior portion of the nasal cavity receives its blood supply via branches from the

Facial and opthalmic arteries

29

The posterior portion of the nasal cavity is primarily supplied via branches of the

Sphenopalatine artery (branch of 3rd part of maxillary artery)

30

What are the four paired paranasal sinuses in the head

Frontal, ethmoidal, sphenoidal and maxillary

31

Interconnected, air filled chambers lined with a mucous membrane

Frontal, ethmoidal, sphenoidal, and maxillary paranasal sinuses

32

Thought to lighten the head, facilitate growth of the face, and play a role in vocal resonance

-function is not really known though

Paranasal sinuses

33

Paranasal sinuses can easily become inflamed resulting in often painful

Sinusitis

34

The mucous produced in these paranasal sinuses drains into the nasal cavities via openings in a

Meatus

35

Once the mucous from the paranasal sinuses enters the nasal cavities through openings in a meatus, it then enters the

Nasopharynx, where it is ultimately swallowed

36

For the FRONTAL sinus, what is the

1.) Opening
2.) Meatus or recess

1.) Frontonasal duct
2.) Middle meatus

37

For the ETHMOIDAL sinus, what is the

1.) Opening
2.) Meatus or recess

Anterior and middle air cells w/ middle meatus

Posterior air cells w/ superior meatus

38

For the SPHENOIDAL sinus, what is the

1.) Opening
2.) Meatus or recess

1.) Sphenoidal osteum
2.) Sphenoethmoidal Recess

39

For the MAXILLARY sinus what are the TWO

1.) Openings
2.) Meatus or recesses

1.)
a. Maxillary osteum w/ middle meatus

b. Nasolacrimal duct w/ inferior meatus

40

Considered the crossroads of the skull because it and its contents communicate with so many different regions of the skull

Pterygopalatine Fossa

41

The bilateral pterygopalatine fossa are filled with

Parasympathetic ganglion and branches of maxillary nerve and artery

42

You can locate the pterygopalatine fossa on a bony skull by placing a pipe cleaner through the

Pterygomaxillary fissue and sphenopalatine foramen

43

When you do this, part of the pipe cleaner will be visible in

The infratemporal fossa and other part in nasal cavity

44

When you look inferiorly at the skull, the portion of the pipe cleaner that you DON'T see is the

Pterygopalatine fossa

45

What are the 4 main maxillary nerve branches in the pterygopalatine fossa?

Palatine, Nasopalatine, Posterior superior alveolar, and Infraorbital

46

What types of nerve fibers are in the Palatine nerve?

Somatic sensory, postganglionic parasympathetic and sympathetic, and taste

47

The palatine nerve innervates the

Palate, mucosa, and palatine taste

48

What type of fibers are in the nasopalatine nerve?

Somatic sensory, postganglionic parasympathetic and sympathetic

49

The nasopalatine nerve passes through the

Sphenopalatine foramen

50

The nasopalatine nerve innervates the

Nasal cavity mucosa

51

What types of fibers are in the posterior alveolar nerve?

Somatic sensory

52

The posterior superior alveolar nerve passes through the

Pterygomaxillary fissure

53

The posterior superior alveolar nerve innervates the

Maxillary teeth

54

What type of fibers does the infraorbital nerve have?

Somatic sensory

55

The infraorbital nerve passes through the

Inferior orbital fissure

56

The infraorbital nerve innervates the

Face

57

The palatine nerve passes through the

Palatine foramina

58

The pterygopalatine ganglion consists of post ganglionic parasympathetic cell bodies whose axons innervate the

Lacrimal gland and mucous glands of the oral and nasal cavities

59

These post ganglionic axons are distributed with branches of the

Maxillary nerve (oral and nasal cavities) and Opthalmic nerve (lacrimal gland)

60

Preganglionic parasympathetic innervation of the pterygopalatine ganglion is from nerve fibers in the

Greater petrosal nerve (of VII)

61

Somatic sensory fibers from the maxillary nerve enter the pterygopalatine fossa via

-but they don't synapse

Pterygopalatine nerves

62

Postganglionic sympathetic axons reach the pterygopalatine ganglion via the

-Also do not synapse in the ganglion

Deep petrosal nerve

63

Both the greater and deep petrosal nerves reach the pterygopalatine fossa by passing through the

Pterygoid canal

64

While in the pterygoid canal, the greater and deep petrosal nerves collectively are referred to as the

Nerve of pterygoid canal or the Vidian nerve

65

Preganglionic parasympathetic axons from the greater petrosal nerve synapse on cells in the

Pterygopalatine fossa

66

Post ganglionic axons then pass from the pterygopalatine ganglion to the maxillary nerve via

Pterygopalatine nerves

67

The maxillary nerve then gives off the zygomatic branch and the postganglionic fibers travel on it through the

Inferior orbital fissure to reach the orbit

68

The zygomatic nerve carries the postganglionic fibers to a communicating brancgh in the lateral wall of the orbit which then unites with the

Lacrimal branch of opthalmic nerve

69

The postganglionic fibers then travel on the lacrimal nerve to reach the

Lacrimal gland

70

The maxillary artery enters the pterygopalatine fossa from the

Infratemporal fossa

71

The maxillary artery enters the pterygopalatine fossa freom the infratemporal fossa via the

Pterygomaxillary fissure

72

Within the pterygopalatine fossa, the maxillary artery branches into the

Descending palatine, sphenopalatine, posterior superior alveolar, and infraorbital arteries

73

The descending palatine artery travels through the

Palatine foramina

74

The descending palatine artery supplies the

Palate

75

The sphenopalatine artery travels though the

Sphenopalatine foramen

76

The sphenopalatine artery supplies the

Nsala cavity

77

The posterior superior alveolar artery travels through the

Pterygomaxillary fissure

78

The posterior superior alveolar artery supplies the

Maxillary teeth

79

The Infraorbital artery passes through the

Inferior orbital fissure

80

The infraorbital artery supplies the

Face

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