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Flashcards in The Ear Deck (52):
1

Another name for the ear.

Pinna

2

This changes less in a lifetime than any other feature.

The ear

3

To capture and direct sound to the earpassage.

Purpose of The Ear

4

The form of the mass of the ear.

Wedge

5

The form of the outer rim of the ear.

Question Mark

6

The linear form of the anterior border of the ear.

Relatively Straight

7

The ear is composed of this.

Cartilage

8

The exception to the ear being made of cartilage.

The Fatty Lobe

9

As paired features, the ears display the most noticable differences in position and form when compared _________.

Together

10

Why would you still be able to model a missing or damaged ear from a remaining ear?

  • The details of both ears can't be viewed together.
  • Unless there is some perculiarity, present people tend to ignore this features intricacies.

11

The details of these cannot be viewed together.

Both Ears

12

Unless there is some peculiarity present, people tend to ______  the ears intricacies.

Ignore

13

The width is two thirds the length, with the widest portion usually in the superior third (of the ears length).

Proportions of The Ear

14

Two thirds it's length.

Width of The Ear

15

The superior third of the ear's length.

Widest Portion of The Ear

16

These provide greater accuracy than proportions for locating the ear.

Anatomical Guides

17

The opening of the ear passage.

External Auditory Meatus

18

Originates from the skull directly superior to the ear passage.

 

Position of the Zygomatic Arch

19

Divides the length of the ear.

Zygomatic Arch

20

Lies directly anterior to the ear passage.

Mandibular Fossa

21

Hidden by the tragus.

Mandibular Fossa

22

Lies posterior and inferior to the ear passage.

Position of The Mastoid Process

23

Hidden by the lob of the ear.

Mastoid Process

24

  • External Auditory Meatus
  • Zygomatch arch
  • Mandibular Fossa
  • Mastoid process

Anatomical Guides for Locating The Ear

25

The keystone to accurate location of the ear.

  • More accurate than facial proportions.

External Auditory Meatus

26

The ear passage aligns  with this.

The front border of the ear.

27

This lies directly above the ear passage and divides the ear into equal halves.

Zygomatic Arch

28

  • Mandibular Fossa- Directly anterior to the ear passage.
  • Mastoid Process- Lies below and behind the ear passage, covered by the lobe.

How to locate the ear when the external auditory meatus and zygomatch arch are destroyed.

29

The outer rim of the ear.

Helix

30

General shape of the helix.

Question  Mark

31

Lies within the concha.

  • Crus- lies upon the zygomatic arch
  • Is flattened into the wall of the concha.
  • Divides the length of the ear.
  • Is deeper than the surface of the cheek.

Origin of the Helix

32

At the top of the lobe.

  • Exception: Is on a "lobeless" ear where the cartilage continues to the cheek.

Termination of the Helix

33

The beginning of the outer rim lying in the concha.

Crus of the Helix

34

The inner rim of the ear.

  • Has a greater width than the Helix

Antihelix

35

At the superior portion of the lobe.

Origin of the Antihelix

36

Where the upper portion bifurcates into two branches (crura).

Termination of the Antihelix

37

The bifurcation of the antihelix.

Crura

38

The upper branch of the antihelix.

Superior Branch of the Crura

39

The measurement of the superior one third of the ear's lenth.

Anterior Branch of the Crura

40

The shallow depression lying between the crura.

Triangular Fossa

41

  • Located in the anterior portion of the ear.
  • Extends relatively far behind the helix.

Location of the Triangular Fossa

42

The fossa between the inner and outer rims of the ear.

  • Is relatively long.

Scapha

43

The shallowest of the depressions.

Depth of the Scapha

44

The concave shell of the ear.

  • Creates the middle third of the lenth of the ear.

Concha

45

Graduated to the earpassage.

Depth of the Concha

46

Behind and above the earpassage.

Location of the Concha

47

The small eminence rising from the cheek and protecting the ear passage.

Tragus

48

  • A wedge-like mass
  • The inferior end attaches to the lobe.
  • The front border is often indistinct.
    • May be marked by a vertical furrow.

Characteristics of the Tragus

49

The small eminence on the upper margin of the lobe.

  • Slightly inferior and posterior to the tragus.

Antitragus

50

The hollow between the tragus and antitragus.

Intertragic Notch

51

Anteriorly on the upper border of the lobe.

Location of the Antitragus

52

The fatty inferior segment of the ear.

  • The lower one third of the ear's length.
  • Mastoid process is the underlying structure.

Lobe