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Flashcards in Anatomy Deck (65)
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1

What is the ala of the nose?

the side of the nostrils

2

What is the philtrum?

the dip in the upper lip

3

Superior bone of the nasal cavity

the ethmoid

4

Inferior bone of the nasal cavity

the vomer

5

What does the ethmoid bone contribute to in the nose? (3)

the roof, the lateral walls and the septum

6

What does the ethmoid bone contribute to in the roof of the nose?

the cribiform plate and the crista galli (the anterior cranial fossa)

7

What does the ethmoid bone contribute to in the lateral wall of the nose?

the superior and middle conchae, ethmoid air cells and orbital plate of the ethmoid

8

Which Le Fort fractures can disrupt the cribiform plate?

types II and III

9

3 types of epithelium in the nasal cavities?

keratinised stratified squamous epithelium; respiratory epithelium; olfactory mucosa

10

What is the pterion

the H-shaped sutures between the frontal, parietal, temporal and sphenoid bone which is the thinnest part of the skull

11

Which bone contains the oragns of hearing and balance ?

Temporal bone

12

Which nerves are contained within the temporal bone?

Facial nerve, vestibulocochlear

13

What are the two parts to the temporal bone?

the squamous and petrous part

14

Where is the external ear?

from the auricle to tympanic membrane

15

Where is the middle ear?

the tympanic membrane to the oval window

16

What is contained in the middle ear?

the eustachian tube

17

What is the role of the middle ear?

amplify and conduct the sound waves to the internal ear

18

Where is the internal ear?

the oval window to the internal acoustic meatus

19

What is the role of the interal ear?

converts special sensory info into fluid waves and APs --> the brain

20

What is the helix of the ear?

the ring of cartilage around the outside of the ear

21

Nerve supply to the auricle of the ear (4)

C2,3 spinal nerve (most of auricle); CN VII (dotted around the opening); CN X (the inferior part of the external acoustic meatus + some tympanic membrane); CN V3 (the superior part of the external acoustic meatus + most of tympanic membrane)

22

where does the lateral surface of the superior half of the auricle drain?

parotid lymph nodes

23

Where does the cranial surface of the superior half of the auricle drain?

mastoid lymph nodes (deep and cervical)

24

Where does the rest of the auricle drain?

the superficial lymph nodes

25

Where is the eventual pathway of all the auricular lymphatic drainage?

deep cervical nodes --> thoracic duct or R. lymphatic duct --> venous angle

26

Skeleton of the external ear?

temporal bone and elastic cartilage

27

Type of cartilage around the external ear?

elastic cartilage

28

What composes the ear canal?

skin, cartilage, bone

29

What glands produce earwax?

ceruminous glands

30

What direction should you pull the auricle when examining a child?

posterioinferiorly