Day 3 (Bone surface features cont.; The skeleton-Intro; the axial skeleton; arthrology; cartilage joints) Flashcards
What is the definition of an osseous fissure?
an irregular slit-like or crack-like appearance between the surfaces of adjacent bones
What are the categories of osseous facets?
flat facets and rounded facets
What are the categories of rounded osseous facets?
articular heads and articular condyles
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
What bones form the axial skeleton?
the skull, hyoid, vertebral column, sternum and ribs
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 skeleton) and the auditory ossicles
What is the total number of bones forming the typical adult skull?
28 bones
What bones form the neurocranium of the typical adult skull?
the frontal, parietal, temporal, occipital, sphenoid and ethmoid
How many bones form the typical adult neurocranium?
8 bones
How many bones form the facial skeleton (splanchnocranium or visceral skeleton)?
14 bones
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
How many bones are present in the typical adult sternum?
1 bone
What regions are present along the typical adult stenum?
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
What term is used to identify the study of ligaments?
syndesmology
What are the three histological classifications of joints?
fibrous, cartilaginous and synovial fluid
What are the characteristics of the (amphiarthrosis) synchondrosis?
they are primary cartilage joints, temporary in longevity, composed of hyaline cartilage and form between ossification centers within a cartilage template
What are examples of a permanent (amphiarthosis) synchondrosis?
costochondral joints or the first sternochondral joint
Which example of a (amphiarthrosis) symphysis is temporary?
symphysis menti
What are the characteristics of a (amphiarthrosis) symphysis?
limited motion, median plane location, support ligaments both anterior and posterior to the joint, more permanent in longevity than synchondrosis and they occur between bones developing by endochondral ossification
