Anatomy Ch 6 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
definition | term |
functions of skeletal system | protection storage blood cell formation fat storage movement support |
bones organized by... | shape |
longer than wide | long bone |
cube-shaped, as long as they are wide | short bone |
thin, broad bones | flat bone |
don't fit in other classes | irregular bone |
bones within tendons | sesamoid bone |
long bone example | bones in arms and legs |
short bone example | bones in wrist/ankle |
flat bone example | ribs, sternum |
irregular bone example | vertebrae, certain skull bones |
sesamoid bone example | patella |
develop when stress is put on tendons | sesamoid bones |
makes red and white blood cells + platelets | red bone marrow |
made mostly of triglycerides and adipocytes | yellow bone marrow |
65% minerals + hydroxyapatite crystals | inorganic matrix |
osteoid with collagen, proteglycans, GAGs, glycoproteins, + bone-specific proteins | organic matrix |
bone-building cells that perform bone deposition | osteoblasts |
osteoblasts surrounded by bone matrix in lacuna | osteocytes |
means break down bone | osteoclasts |
mean build bone | osteoblasts |
multinucleated cells break down bone for remodeling | osteoclasts |
dissolve components of inorganic matrix | hydrogen ions |
break down organic matrix | enzymes |
process of bone formation | ossification/osteogenesis |
occurs within membrane | intramembranous ossifictaion |
forms many flat bones | intramembranous ossification |
occurs inside hyaline cartilage | endochondral ossification |
forms long bones arms + legs | endochondral ossification |
long bones develop by... | - chondrocytes swell -osteoblasts build bony collar for support - chondracytes die from lack of nutrients - bone builds to fill space |
chondrocytes divide in epihyseal plate | longitudinal growth |
can be recruited for bone growth | zone of reserve cartilage |
zone of dividing chondrocytes | zone of proliferation |
contains mature chondrocytes | zone of hypertrophy/maturation |
dead chondrocytes + some calcified | zone of calcification |
calcified chondrocytes + osteoblasts | zone of ossification |
zones epiphyseal plate: close-far | - zone of reserve cartilage - zone of proliferation - zone of hypertrophy/maturation - zone of calcification |
bones grow in width | appositional growth |
new, round lamella are formed | appositional growth |
osteoblasts put calcium into bloodstream | bone deposition |
osteoclasts break down bone to reabsorb calcium | bone resorption |
physical factors why bone remodel | - tension/stress + compression increase tissue in bone |
hormonal factors why bone remodel | - testosterone/estrogen stimulate bone growth |
dietary factors why bone remodel | - calcium ion - vitamin D -vitamin C - vitamin K - Protein |
increase blood calcium ion levels | parathyroid hormone |
increase osteoclast activity to relase calcium | parathyroid hormone |
tells digestive system to absorb calcium in food | parathyroid |
inhibits calcium in urine | parathyroid |
Hormone decreasing calcium ion levels | calcitonin |
Hormone that leads to bone deposition | calcitonin |
Affects the absorption of calcium ions from the gut | Vitamin D |
Created by:
arenjustice
Popular Biology sets