ear anatomy + miscellaneous

Question 1

frontal region

Answer 1

• created by frontal bone and frontalis muscle
• superior to eyebrows
• includes glabella

Question 2

orbital region

Answer 2

• surrounds eyes
• laterally (root of nose to meeting point of zygomatic and frontal bone)
• inferior/superior (zygomatic bone below socket to frontal bone)

Question 3

infraorbital region

Answer 3

• under eye region
• directly beneath the medial portion of the orbital region
• includes sides of nose to zygomatic arch

Question 4

zygomatic region

Answer 4

• lateral to the infraorbital region (cheeks)
• from lateral border of infraorbital/orbital region to the ear
• also superior/inferior (from lateral corner of eye to base of nose)

Question 5

nasal region

Answer 5

• between the infraorbital regions
• entire nose

Question 6

oral region

Answer 6

• surrounded by orbicularis oris
• from base of nose to top of chin
• between angulus oris eminences

Question 7

buccal region

Answer 7

• lateral border of the oral region to the edge of mandible
• plane lateral of the base of the nose to the bottom of the mandible

Question 8

mental region

Answer 8

• corners of your mouth to the bottom of your mandible (chin area)
• top of your chin to the bottom of your chin

Question 9

what feature changes the least in a lifetime

Answer 9

the ear

Question 10

external auditory meatus anatomical guides

Answer 10

• Front border of ear is in alignment with the external auditory meatus
• tragus protects ear

Question 11

zygomatic arch anatomical guide

Answer 11

• used to locate correct position of a modeled ear, half way point
• helix ends at zygomatic arch

Question 12

mandibular fossa anatomical guide

Answer 12

• lies directly anterior to the ear passage
• offers way to locate restored ear

Question 13

helix

Answer 13

• Outer rim of the ear - resembles a question mark
• Originates in the concha with the crus
• Terminates on the lobe
• Curls over and creates a shadow

Question 14

scaphoid fossa (scapha)

Answer 14

• Shallowest depression of the ear
• Directly medial to the helix
• Separates the helix from the antihelix

Question 15

antihelix

Answer 15

• Medial to the scaphoid fossa
• Originates on the lobe
• Terminates in to the crura

Question 16

triangular fossa

Answer 16

• Upper ⅓ of the ear
• Second deepest/second shallowest depression of the ear
• Depth may be deceptive because of recession of the anterior branch
• Extends relatively far behind front segment of the helix

Question 17

tragus

Answer 17

• Small, wedge like prominence rising from cheek and protecting ear passage
• Front border is often indistinct but may be marked by vertical furrows

Question 18

antitragus

Answer 18

• Lies slightly inferior and posterior to tragus
• Located on the superior portion of the lobe

Question 19

intertragic notch

Answer 19

• Depression between the tragus and antitragus
• Relatively deep and is located immediately below ear passage

Question 20

concha

Answer 20

• Deepest depression of your ear
• Makes up the middle ⅓ of your ear
• Margin resembles a block letter “C”

Question 21

lobe

Answer 21

• Inferior ⅓ of your ear
• Can be attached to the cheek or not
• May blend imperceptibly into cheek, may be marked by a furrow, or may jut prominently with a definite margin

Question 22

types of ear restoration

Answer 22

• complete
• partial
• removal of fluid
• sagging lobe