chapter 8 skeletal system Flashcards
what are the number of bones in the body at birth vs at adult hood
270 at birth
206 at adulthood
what are sutural bones
Extra bones than usually in the skull
How many bones are usually in the skull
22
What is a condyle?
A rounded knob that articulates with another bone (occipital condyles of the skull)
what is a head articulation?
Give one example
The prominent expanded end of a bone, sometimes rounded (head of the femur)
what are the 3 types of articulations of bone
condyle articulation
head articulation
facet articulation
what are the 5 types of passageway and cavities of skeletal bone
canal fissure sinus foramen meatus
To palpate means to ?
to feel
sutures are ..
immovable joints that connect bones together
what is a tubercle?
example ?
A small, rounded process on bones
(greater tubercle of the humerus)
Orbit cavity houses the?
eye socket
a skeletal fossa is a?
example?
small shallow depression
examples mandibular fossa
what are the bones of the skull?
which bones are a pair aka 2?
22 BONES TOTAL IN SKULL
8 CRANIAL
14 FACIAL
Frontal bone (1) Temporal bones (2) Parietal bones (2) Sphenoid bone (1) Occipital bone (1) Ethmoid bones (1)
Facial bones are... Maxillae (2) Nasal bones (2) Palatine bones (2) Vomer (1) Zygomatic bones (2) Inferior nasal conchae (2) Lacrimal bones (2) Mandible (1)
fovea are ?
small pits
Sinuses in the skull are
They are connected with the nasal cavity, lined by mucous membranes, and filled with air. They lighten the anterior portion of the skull and act as chambers that add resonance to the voice
Foramens are?
Holes in bone that allows passageway to nerves and vessles
The delicate brain tissue does not come directly into contact with the bones, but is separated from them by three membranes called
meninges
the three meninges starting from deeper are called?
PIA MATTER
ARACHNOID MATTER
DURA MATTER
The calvaria is?
(skullcap) is not a single bone but simply the dome of the top of the skull;
what are the names of the 3 cranial fossas and what part of the brain does it hold
Anterior cranial fossa holds frontal lobe
middle cranial fossa holds temporal lobe
posterior cranial fossa holds cerebellum
how many bones in skull vs
how many cranial bones
22 bones in skull
8 cranial bones
this bone shape with a thick median body and outstretched greater and lesser wings, which give the bone as a whole a ragged mothlike shape.
sphenoid bone