Unit 1 - II. The Skeleton Flashcards
How many bones form the typical adult skeleton?
206 bones
What are the subdivisions of the skeleton?
the axial skeleton and appendicular skeleton
How many bones form the typical adult appendicular skeleton?
126 bones
How many bones form the typical adult axial skeleton?
80 bones
What bones form the axial skeleton?
the skull, hyoid, vertebral column, sternum and ribs
What is the total number of bones forming the typical adult skull?
28 bones
What is the name given to the adult skull minus the mandible?
the cranium
What are the names given to the top of the adult skull?
the calvaria or calva
What are the categories of bone forming the typical adult skull?
the neurocranium, the facial skeleton (splanchnocranium or visceral cranium) and the auditory ossicles
What is the neurocranium?
the bones that support or protect the brain
How many bones form the typical adult neurocranium?
8 bones
What bones form the neurocranium of the typical adult skull?
the frontal, parietal, temporal, occipital, sphenoid and ethmoid
How many bones form the facial skeleton (splanchnocranium or visceral skeleton)?
14 bones
What is the facial skeleton (splanchnocranium or visceral cranium)?
the bones that support the face or front of the head
What bones form the facial skeleton?
mandible, vomer, nasal, maxilla, lacrimal, inferior nasal concha, palatine and zygomatic
By strict definition, what is the splanchnocranium?
the bones that support the face minus the mandible
What bones form the splanchnocranium?
vomer, nasal, maxilla, lacrimal, inferior nasal concha, palatine and zygomatic
How many bones comprise the typical adult auditory ossicles?
6 bones
What bones comprise the typical adult auditory ossicles?
the stapes, incus, and malleus
How many bones are present in the adult hyoid?
1 bone
What bones comprise the typical adult vertebral column or spinal column?
the cervical, thoracic, lumbar vertebrae and the sacrum and coccyx
What is the number of bones comprising each region of the typical adult spinal column or vertebral column?
7 cervical, 12 thoracic, and 5 lumbar vertebrae, 1 sacrum and 1 coccyx
What is the name given to the presacral region of the typical adult vertebral column or spinal column?
the spine
What is the total number of bones forming the typical adult spine?
24 bones
What is the definition of “spine” as it pertains to the vertebral column?
the pre-sacral region of the vertebral column or spinal column
How many bones are present in the typical adult sternum?
1 bone
What regions are present along the typical adult sternum?
the manubrium sterni, the corpus sterni and the xiphoid process
How many ribs are present in the typical adult skeleton?
12 pair or 24 ribs
