Structures of the Outer Ear - Pinna Flashcards
1
Q
What is another name for the pinna?
A
- Auricle
2
Q
What is the function of the pinna?
A
- Collector of sounds
- Aids in sound localization
3
Q
Label the Diagram
A
4
Q
What/where is the Helix?
A
- Fold of tissue that forms the outer margin of the pinna
5
Q
What is the Crus of Helix?
A
- Leg-like part of helix
6
Q
What/where is the Antihelix?
A
- fold of tissue or ridge anterior to the helix, marking the entrance to the concha
7
Q
What/where is the Crura of antihelix?
A
- Landmark produced by the bifurcation of the antihelix
8
Q
What/where is the Triangular fossa?
A
- Concave space between the two crura of the antihelix
9
Q
What/where is the Scaphoid fossa?
A
- Groove located between the helix and antihelix
10
Q
What/where is the tragus?
A
- Slight protrusion of cartilage anterior to the auditory meatus
11
Q
What/where is the antitragus?
A
- Cartilaginous protrusion opposite to the tragus
12
Q
Where is the Intertragic incisure (notch)?
A
- Region between the tragus and antitragus
13
Q
What/where is the Lobule (lobe)?
A
- Non-cartilaginous inferior portion of the pinna
14
Q
What/where is the Concha (concha cava)?
A
- Entrance to the external auditory meatus (ear canal)
15
Q
Function of concha
A
- Resonates and emphasizes the high frequency sounds
16
Q
What/where is Darwin’s tubercle?
A
- Common landmark of ear
- A prominence located near the inside of the superior helix
