Skeletal System Flashcards
What are the functions of the skeletal system
support and protection; body movement- muscles “pull” on bones
What is blood cell formation called
hematopoiesis
where does hematopoiesis occur
red bone marrow
What does the skeletal system store
inorganic materials (calcium, magnesium, sodium, potassium)
How many bones are in the body
206
What are the two divisions of the skeletal system
axial and appendicular
What does the axial portion include
head, neck, trunk, skull, hyoid bone, vertebral column, ribcage, sternum
How many pairs of ribs are there
12
What does the appendicular portion include
limbs and bones connecting limbs to pectoral and pelvic girdle
What is the pectoral girdle
scapula, clavicle, upper limbs
Pelvic girdle
coxal bones, lower limbs
What does fibrodysplasia cause
soft tissue (mucles, tendons, and ligaments) to turn to bones
What causes flare-ups in bone growth
minor trauma to tissue
what are ends of the bones called
epiphysis
what are shaft of the bones called
diaphysis
what is the cartilage covering the bones called
articular cartilage
What is the membrane covering the entire bone called
Periosteum
what long bone structure contains bone marrow
medulla
Proximal epiphysis
closest to the bodys center
distal epiphysis
farthest from the bodies center
flat bones function
protection
flat bones examples
sternum, ribs, skull bones
Long bones function
support weight and movement
long bones example
femur and tibia
