Lab 7 Flashcards
(49 cards)
what are the four shapes that bones are classified into?
long bones, irregular bones, flat bones, short bones
what is a sesamoid bone?
small and flat, develop in tendons, near joints and knees, hands, feet
what type of bone forms the walls of the diaphysis?
compact bone
what type of bone predominates at the epiphyses?
spongy bone
what is found in the medullary cavity?
red bone marrow
periosteum and endosteum are?
membranes that cover bone surfaces;
periosteum- covers external surface, dense irregular CT
endosteum- covers trabeclae and lines bone cavities
ossification?
formation of bone
calcification?
deposition of calcium salts within a tissue
osteocytes?
cells that maintain bone tissue
osteoblasts?
cells that produce bone matrix
osteoclasts?
cells that dissolve bone matrix
osteoprogenitors?
stem cells that can differentiate into bone cells
endochondral ossification?
type of formation of bone where cartilage is replaced by bone
-long bones use this method
epiphyseal line with ossified epiphyseal plate?
adult
intramembranous ossification?
ossification where bone is formed within fibrous connective tissue
-flat bones
3 main subdivisions of the axial skeleton?
1: skull 2: thoracic cage 3: vertebral column
function of frontal sinus?
lighten skull bones, provide mucus, resignating chambers of speech
parietal bone sutures?
sagittal, coronal, squamous, lambdoid
what passes through the foramen magnum?
spinal cord
occipital condyles articulate with?
superior articular facet of C1 atlas
mastoid process?
site of muscle attachment for sternocleidmastoid muscle
stylohyoid ligament connects the styloid process to which bone?
hyoid bone
external auditory meatus?
where sound enters the ear
zygomatic process?
temporal process of the zygomatic bone, forms zygomatic arch
