Lab Guide 79-88 Flashcards Preview

Block 6- SHANE > Lab Guide 79-88 > Flashcards

Flashcards in Lab Guide 79-88 Deck (52)
1

What are the borders of the submandibular (suprahyoid) region?

anterior and posterior digastric bellies and the inferior border for the mandible

2

What forms the roof of the submandibular region?

superficial layer of the cervical fascia and platysma muscle

3

What are the main contents of the submandibular region?

- submandibular gland, duct, and ganglion
- lingual and hypoglossal nerves
- facial artery and vein
- lymph nodes

4

The submandibular gland is superficial to which muscle?

the mylohyoid muscles

5

What vein is directly superficial to the submandibular gland?

the facial vein

NOTE: the facial artery is directly deep to the gland

6

What does the submental artery branch from?

the facial artery

7

The mylohyoid nerve is a branch of which nerve?

the inferior alveolar nerve (branch of V3)

8

What does the mylohyoid nerve innervate?

the mylohyoid muscle and the anterior digastric belly

9

What is the posterior digastric belly innervated by?

the facial nerve

10

What is the stylohyoid muscle innervated by?

branches of the facial nerve

11

What is the origin of the mylohyoid m.?

the mylohyoid line of the mandible

12

T or F. The mylohyoid mm. have free inferior borders

T

13

What does the geniohyoid do?

draws the mandible and hyoid toward each other

14

What two muscles does the deep part of the submandibular gland sit between?

the mylohyoid and hyoglossus (thus, the duct is superficial to hyoglossus)

15

What muscles does the submandibular duct course superficial to during its course to the sublingual caruncle?

the hyoglossus and genioglossus m.

16

What does the lingual nerve convey?

general somatic sensory to the mucosa of the mouth and the anterior 2/3 of the tongue, taste fibers from the anterior 2/3rds of the tongue and parasympathetic fibers to the submandibular and sublingual glands

Courses from lateral, inferior, to medial to the submandibular duct

17

The submandibular ganglion is suspended inferiorly from which nerve?

the lingual n.

18

Does the lingual artery course deep or superficial to the hyoglossus?

deep

19

All of the muscles of facial expression are derived from which branchial arch?

2nd (all innervated by the facial nerve)

20

What muscle does the facial a. and v. ascend up the lateral face upon?

the buccinator (the buccinator has vertical fibers)

21

Which four muscles do the facial a. and v. run deep to in the face?

the levator labii superioris, the zygmoaticus minor and major, and the risorius

22

What does the facial a. terminate as near the medial aspect of the orbit?

the angular a.

23

Between what two muscles does the superior labial a. branch from the facial a.?

the minor and major zygomaticus m. (the facial a. also gives off the nasal a. near the top of the nose and it descends down the outside on the brim)

24

Does the facial v. lie lateral or medial to the facial a.?

lateral

25

The supraorbital n. can be found deep to which muscle?

frontalis muscle

26

The infraorbital n. can be found deep to which muscle?

levator labii superioris

27

The mental n. can be found deep to which muscle?

depressor labii inferioris

28

The facial a. and v. continue as what?

angular a. and v

29

The facial v. communicates with what venous systems?

the pterygoid plexus and the transverse facial v. However, it empties into the common facial v. which dumps into the IJV

30

The infraorbital n. becomes subcutaneous deep to which muscle?

the levator labii superioris

31

The mental n. becomes subcutaneous deep to which muscle?

the depressor labii inferioris

32

The buccinator can be thought of an extension of what posterior muscle from the pteryomandibular raphe?

the superior contrictor

33

The isthmus of the parotid gland is wedge between what structures?

posterior digastric belly and stylohyoid posteriorly and the ramus of the mandible, and its attached medial pterygoid and masseter anteriorly

34

The masseter m. spans which bones?

the lateral surface of the angle of the mandible and the zygomatic arch of the temporal bone

spans the SCM to masseter

35

The parotid duct enter the vestibule where?

opposite the upper 2nd molar tooth by piercing buccinator

36

What branch of the facial n. runs with the parotid duct?

buccal nerve

37

Behind the substance of the parotid gland, what are the three structures from superficial to deep?

facial n., retromandibular v., and external carotid with superficial temporal a., maxillary, and posterior auricular branches

38

The retromandibular v. forms from what?

the maxillary and superficial temporal v. just deep to the superior part of the parotid gland

39

Where can the superficial temporal a. be found in relation to the zygomatic arch?

just posterior to it

40

What three muscles arise from the styloid process?

the stylohyoid, stylopharyngeus, and the styloglossus (7,9, and 12)

41

What four bones contribute to the pterion?

Frontal Bone
Parietal Bone
Temporal Bone (Squamous Part)
Greater Wing of Sphenoid Bone

42

Which nerve passes through the mandibular notch?

masseteric branch

43

Describe the course of the buccal n.

Embedded in the anterior fibers of temporalis near its insertion, and becomes cutaneous at the buccal fat pad

44

Tributaries from the pterygoid plexus form what?

maxillary v.

45

What attaches to the lingua of the mandible?

the sphenomandibular ligament

46

What n. and a. pass through the heads of the lateral pterygoid?

the buccal n. of 5 and the maxillary a.

47

The medial pterygoid plate originates on which two bones?

the maxilla and the lateral plate of the sphenoid

48

The TMJ inserts on what two points on the temporal bone?

the articular tubercle and the mandibular fossa (and inserts on the condylar process of the mandible)

49

What is the anterior tonsillar pillar?

palatoglossus fold

50

What is the posterior tonsillar pillar?

palatopharyngeal fold

51

What innervates the palatopharyngeus and palatoglossus mm.?

the pharyngeal branch of the vagus

52

What forms the hard palate?

the palatine process of the maxilla and the horizontal process of the palatine bone