Bone Tissue Flashcards
True or false bone tissue is alive
True
How how many year does it take to replace bone tissue
7-10 years
What is made in bone marrow?
red and white blood cells
Red blood cells
transport oxygen
White blood cells
body’s immune system
What 4 shapes of bones are there?
long, short, flat, and irregular
What 2 types of bone are in all bones?
compact and spongy
Osteogenic cells
stem cells in the osteum
Osteoblasts
building cells that arise from a stress
Osteocytes
trapped osteoblasts that send signals to communicate
Osteoclasts
break down (chew) away old bone and self destruct
What 3 types of marrow are there?
red, yellow, gelatinous
Intramembranous ossification
the way the skull and clavicle are formed
Endochondral ossification
occurs at articular/epiphyseal growth plates and is the way most of the bones grow
Interstitial
length of bone (young)
Appositional
width of bone (mature)
Deposition
deposits calcium into the bone
Resorption
dissolves bone into the blood
Hypocalcemia
low calcium in blood
Hypercalcemia
high calcium in blood
Rickets/osteomalacia
deficient vitamin D, has to do with the liver and kidney
Osteitis deformans
more osteoblasts than osteoclasts
Achondraplasia dwarfism
head and trunk normal, long bones short (involves DNA)
Pituitary dwarfism
short everything, normal proportions (involves growth hormone)
Ectopic ossification
too much calcification
Osteoporosis
brittle bones due to loss of both inorganic (minerals) and organic (collagen)
Osteomyelitis
infection in bone tissue/marrow
Osteoma
benign bone tumor
Osteochondroma
benign bone and cartilage
Osteosarcoma
cancer of the bone, deadly
Chondrosarcoma
cancer in hyaline cartilage
