Skeletal System (Exam 2) Flashcards
The skull, vertebral column, and rib cage comprise the
axial skeleton
The bones of the upper limb are part of the
appendicular skeleton
Which of the following is a function of the axial skeleton?
supports trunk of body
The axial skeleton
forms the vertical axis of the body
explains why the number of bones varies with age
Many bones fuse together during development, resulting in fewer bones in the adult.
entire sequence of bones that extend from the skull to the tailbone
vertebral column
refers to a prominent expanded end of a bone that is sometimes rounded
head
crest
a narrow ridge
An extended region superior to a condyle
Epicondyle
A slightly raised, elongated ridge
line
A bony outgrowth or protruding part
Protuberance
Tubercle
A small rounded process
The axial skeleton can be defined as
The bones of the supporting central axis of the body
A pit or socket
alveolus
a shallow,broad,or elongated basin
fossa
a small pit
fovea
a groove for a tendon, nerve, or blood vessel
sulcus
How many bones does the skeleton typically contain at birth?
270
Which bones are classified as cranial bones?
total of 8
- frontal 1
- parietal 2
- temporal 2
- occipital 1
- sphenoid 1
- ethmoid 1
a rounded knob that articulates with another bone
condyle
a smooth,flat, articular surface
facet
A tooth socket is a(n)
alveolus
The sagittal, squamous, coronal, and lambdoid sutures border the
parietal bone
Which cranial bones are paired?
parietal and temporal
flat and vertical part that also contains the zygomatic process (temporal bone)
squamous part
contains the styloid process and a small ring of bone surrounding the external acoustic meatus (temporal bone)
tympanic part
found posterior to the tympanic part and is filled with small air sinuses that communicate with the middle-ear cavity (temporal bone)
mastoid part
contains the internal acoustic meatus and the middle and inner ear cavities (temporal bone)
petrous part
The mandibular condyle articulates with which part of the temporal bone?
Mandibular fossa
