skeletal system Flashcards
composed of bones, and associated connective tissues such as cartilage, tendons and ligaments.
SKELETAL SYSTEM
division of skeletal system
axial skeleton(skull, hyoid, thoracic cage, vertebral column and auditory ossicles)
appendicular skeleton (upper and lower extremities, pectoral and pelvic girdle)
Functions
- Support for tissues and muscle
- Protection for vital organs
- Movement through bones and attached muscles
- Storage for minerals and immature blood cells
process of bone cell formation
Ossification
cells of the bone
Osteocytes
number bones comprise the adult skeletal system
206
number bones comprise the infant skeletal system
270
Types of bone: shape
long bones
short bones
flat bones
irregular bones
longer than they are wide
long bones
broad as they are long
short bones
relatively thin, flattened shape
flat bones
shapes that are undetermined
irregular bones
example of long bones
humerus, femur, radius, ulna and the like
example of short bones
carpals, tarsals
example of flat bones
Ribs, scapulae, certain skull bones
example of irregular bones
vertebrae
What minerals do bones store
Calcium and phosphorus
Types of bone: histological structure
compact bone
cancellous bone
is mostly solid matrix and cell with few spaces
compact bone
is mostly solid matrix and cell with few spaces
cancellous bone
