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Skeletal System
Skeletal System
33
Anatomy
9th Grade
11/12/2012

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Cards

Term
What is bone?
Definition
mineralized connective tissue
Term
What is the function of bone? (2)
Definition
1.protects the internal soft tissue
2.allows for movement
Term
What is the function of the bones of the skull? (2)
Definition
1.protect brain for injury
2.form our facial features
Term
What are landmarks of bones important for?
Definition
for nerve and blood vessel position
Term
What is the name of the bones that house the brain?
Definition
the cranium/neurocranium
Term
What do the viscerocranium bones make up?
Definition
the face
Term
How many bones is the maxilla composed of?
Definition
two bones(maxillae) fused together
Term
What else is the maxilla composed of?
Definition
-a body
-4 processes
Term
What are these 4 processes?
Definition
1.frontal process
2.zygomatic process
3.alveolar process
4.palatine process
Term
How many plates are in the palatine bones? What are they called?
Definition
-2
-vertical and horizontal plates
Term
What does the horizontal plate form?
Definition
posterior portion of the hard palate
Term
What does the vertical plate form?
Definition
part of the lateral wall of nasal cavity and part o the orbit
Term
What is the only freely movable bone of the skull?
Definition
the mandible
Term
What does the mandible articulate with to form the TMJ?
Definition
temporal bones
Term
What are the two major parts of the mandible?
Definition
body and ramus
Term
What are the three portions of the temporal bone?
Definition
1.squamous
2.tympanic
3.petrous
Term
What is the squamous portion of the temporal bone like?
Definition
flat, fan shaped
Term
What does the squamous portion articulate with? (3)
Definition
1.sphenoid bone
2.parietal bone
3.occipital bone
Term
What are three landmarks on the zygomatic process?
Definition
1.articular fossa
2.articular eminence
3.postglenoid process
Term
What does the tympanic portion of the temporal bone form?
Definition
most of the external auditory meatus
Term
What are some landmarks of the petrous portion of the termporal bone? (3)
Definition
1.mastoid process
2.mastoid notch
3.styloid process
Term
What is the sphenoid bone?
Definition
midline bone that connects cranial bones to facial bones
Term
What is the sphenoid bone made up of?
Definition
a body and processes
Term
What are the 4 processes of the sphenoid bones?
Definition
1.greater wings
2.lesser wings
3.lateral pterygoid plates
4.medial pterygoid plates
Term
What does the body of the spenoid contain?
Definition
the paired sphenoidal sinuses
Term
What does sella turcica gold?
Definition
the putitary gland
Term
What is sella turcica also known as?
Definition
hypophyseal fossa
Term
What does the ethmoid bone form? (3)
Definition
1.part of the nasal cavity
2.nasal septum
3.orbit
Term
What are the paranasal sinuses?
Definition
air-filled cavities lined with mucous membranes
Term
How do the sinuses communicate with the nasal cavity?
Definition
via small openings in the nasal wall
Term
What are these small opening called?
Definition
ostia
Term
What is the function of the sinuses?
Definition
1.to lighten skull
2.act as sound resonators
3.provide mucous for the nasal cavity
Term
What is sinusitis?
Definition
inflamed sinuses, can be primary or secondary
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