Anatomy 1 (Lectures 1 and 2) Flashcards Preview

Study Notes - Gastroenterology > Anatomy 1 (Lectures 1 and 2) > Flashcards

Flashcards in Anatomy 1 (Lectures 1 and 2) Deck (100)
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1

Parts of the GI tract (11)

Oral cavity
Pharynx
oesophagus
stomach
small intestine
large intestine (including rectum and anal canal)
accessory organs (tongue, salivary glands, pancreas, liver, and gallbladder)

2

What joint is involved in opening the mouth

The temperomandibular joint (TMJ)

3

3 pairs of jaws "closing" muscles names?

Masseter
Temporalis
Medial pterygoid

4

Where does the masseter stretch?

From angle of mandible to zygomatic arch

5

Where does the temporalis run?

From coronoid process of mandible to temporal fossa

6

Where does the Medial Pterygoid run?

From angle of mandible (medial side) to pterygoid plates of sphenoid bone

7

What is the 1 pair of jaw opening muscle and where does it run

lateral pterygoid
Condyle of mandible to pterygoid plates of sphenoid bone

8

What supplies all the jaw muscles

Mandibular division of trigeminal nerve - CN V3

9

What cranial nerve number is the trigeminal nerve and what division is the mandibular division?

CN 5
3rd division

10

CN V3 course:
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course

Pons
Inferior to the edge of the tentorium cerebelli between the posterior and middle cranial fossa
foramen oval of sphenoid bone
From foramen oval towards structures they supply

11

What part of the mouth is particularly sensitive to touch

the posterior wall of the oropharynx

12

What is aspiration?

Inhalation of liquid or solid matter into the lungs (different from choking)

13

What are the arches of the soft palate made from?

Skeletal muscle covered in mucosa

14

Surface anatomy of the mouth (8)

Hard palate
Soft palate (made up of arches)
Upper dental arch
Lower dental arch
Palatine tonsils
tongue
uvula
gingivae

15

What 2 parts can the tongue be divided into and how much of each tongue is classed as what

Anterior 2/3rds (horizontal and in oral cavity)
Posterior 1/3rd (vertical and not in oral cavity)

16

What supplies the:
general sensory parts of the tongue?
Special sensory areas of the tongue
general and sensory supply of posterior 3rd of tongue

CN V3 (3rd division of trigeminal nerve)
CN VII (facial nerve)
CN IX (glossopharyngeal)

17

What gives general sensation to the gingiva of oral cavity and palate (superior half)

CN V2

18

What gives general sensation to the gingiva of oral cavity and floor of mouth (inferior half)

CN V3

19

What is the gag reflex

A protective reflex that prevents foreign bodies from entering the pharynx or larynx

20

Sensory part of gag reflex

CN IX

21

Motor part of gag reflex

CNIX and CNX

22

What CN's does spraying a local anaesthetic block the sensory action potentials of

CN V2, CN V3, CN VII and CN IX

23

What does the gag reflex cause that helps close off the entry to the body

Constrict the pharynx

24

CN V2 course:
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course

Pons
Inferior to the edge of the tentorium cerebella between the posterior and middle cranial fossae
Formane rotundum in sphenoid bone
From foramen rotunda towards structures they supply

25

CN VII course (special sensory, sensory, motor and parasympathetic):
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course

junction between the pons and medulla
Directly into internal acoustic meatus in the posterior cranial fossa
Passes through the temporal bone through the internal acoustic meatus and stylomastoid foramen
most fibres pass through he stylomastoid foramen

26

What branch of CN VII connects to the lingual nerve branch of CN V3?

The chorda tympani

27

What does the chorda tympani contain?

Taste axons for the anterior 2/3rds of the tongue
Parasypathetic axons for salivary glands

28

where does the chorda tympani branch off of CN VII

At the stylomastoid foramen

29

CN IX course (special sensory, sensory, motor, visceral afferent and parasympathetic):
CNS part
Intracranial part
Base of skull foramen part
Extra-cranial part of course

Medulla
Directly towards jugular foramen in the posterior cranial fossa
Jugular foramen at the junction between the temporal bone and occipital bone
Axons mainly pass to or from the tongue and palate
posterior wall of oropharynx
parasympathetic secretomotor to parotid salivary glands

30

3 pairs of salivary glands

Parotid
Submandibular
Sublingual