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Anatomy Final

Terms in this set (30)

Two divisions of the skull
Calvarium and Facial Skeleton
What divides the face into left and right halves?
Nasal Septum
At what point does the mandible articulate with the maxilla?
temporomandibular joint (TMJ)
At what age is the facial skeleton 90% the adult size?
age 12
Which bone is perforated? Why?
Ethmoid bone
Passage of many nerves
How many bones surround the nose and the mouth? Which are not paired?
14 (all are paired except the mandible and the vomer)
Which bones are the "cheek bones"? Which bones does it articulate with?
Zygomatic Bones
(Maxilla, temporal bone, sphenoid bone, frontal bone)
Which bones form the bridge of the nose? What do these articulate with?
Nasal Bones
(Frontal bone, maxilla, nasal septum)
Which bone is the smallest/most fragile of the facial bones? What does it form? What does it articulate with?
Lacrimal Bone
Anteromedial wall of the orbit
(Maxilla, Frontal bone, Ethmoid Bone)
Which bone forms the posterior inferior portion of the nasal septum? Which cartilage forms the anterior inferior portion of the nasal septum? What does the bone sit on top of?
Vomer
Septal Cartilage
Maxilla/Palatine bones that form the hard palate
Where are the meninges anchored on the ethmoid bone?
crista galli
Which bone forms the inferior turbinate? Which bone forms the superior and middle turbinates? Which of these two contains all of the holes?
Inferior Nasal Concha
Ethmoid Bone
Ethmoid Bone
How is the nasal cavity lined and why?
Mucous membrane to warm and humidify the air entering the body
Which bones form the posterior 1/3 of the hard palate? What shape do these bones make?
Which two bones do these bones lie between?
Palatine Bones
L shape
Lie between the maxilla (anterior) and sphenoid (posterior)
Where does the velum attach posteriorly to?
palatine bones
Name the three important foramen of the facial skeleton?
What nerve enters each of these foramen? What type of nerves are these?
Supraorbital foramen (V1 opthalmic trigeminal)
Infraorbital foramen (V2 maxillary trigeminal)
Mental foramen (V3 mandibular trigeminal)
PURELY SENSORY
Name the four processes of the maxilla, which two are important for speech?
frontal, alveolar, zygomatic, palatine
Alveolar and palatine processes are important for speech
What bone makes up the anterior 2/3 of the hard palate? What is the function of the hard palate?
maxilla
separates the nasal and oral cavities
what are the ridges in the alveolar process behind the teeth called? what do these do?
rugae
break up food, useful for therapeutic purposes
what is the most anterior part of the maxilla behind the central and lateral inscisers called?
Premaxillary segment
what is the hole at the tip of the premaxillary segment/medial suture called? when does this normally close off? What is it called if left open?
incisive foramen
closes during embryonic development
palatal fistula
what is the central posterior landmark of the hard palate that fuses last during development?
posterior nasal spine
what is the name of the bilateral foramen on the palatine bones of the hard palate?
greater palatine foramen
what occurs in the facial skeleton during the 8th, 9th, and 11th week of development?
8 = premaxillary and palatine processes join
9 = hard palate is completed
10 = soft palate is completed
what week are critical for development of bones of the lower face?
4-10
which facial bone fuses at birth and is the largest/strongest facial bone?
Mandible
Explain the location of the body, ramus, genu, mental symphysis, mental foramen, and alveolar process of the mandible
Which process of the mandible do the temporalis and masseter attach to?
lateral pterygoid?
coronoid process (anterior)
condyloid process (posterior)
What are the three ligaments of the temporomandibular joint?
what movement does each limit?
temporomandibular ligament (down and back)
sphenomandibular ligament(down and back)
stylomandibular ligament (down and forward)
What fluid surrounds the TMJ? what cartilage covers the condyle?
synovial fluid
articular disk
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