Written anatomy skeletal system

0.0(0)
Studied by 0 people
call kaiCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/6

encourage image

There's no tags or description

Looks like no tags are added yet.

7 Terms

1
New cards

functions of the skeletal system

1.support: frame work for entire body, small tissue held by bone, every muscle is attached to bone

  1. protection: skull protects brain, ribcage lungs, sternum heart

  2. movement cassit: muscle does most work but bones assists

  3. red blood cells production: produced in red blood cells marrow

  4. storage of energy: yellow bone marrow, lipids

  5. mineral homeostasis: calcium, phosphorous, stored in bones


2
New cards

what is bone made of?

matrix- bone tissue

  1. 25% of water

  2. 25% protein fibers

  3. mineral salts (other 50%)-what makes it hard

  4. other things like magnesium, fluoride, and sulfates


3
New cards

bone formation

  1. Osteorognenitor: makes new cells, unspecialized cell that help makes new bones when it breaks down

  2. osteoblasts: make bone matrix, lose ability to do mitosis, secrete collagen, elastin, and minerals

  3. oestocytes: true bone cell (mature bone cell) comes from oestoblasts when trapped

  4. oestoclasts: breaks it down, typically surface of the bone, breaking down old stuff, resorption


4
New cards

made in matrix

compact bone: makes majority of of skeletal system (the hard stuff)

osteons: also called haversian system

central canal: run length wise (where blood vessels/ nerves are at)

5
New cards

whole bone formation

  1. tramenbransus: formed within other tissues (soft tissue hardens in matrix)

  2. endochondral: cartiledge (best observed in long bones) happens on growth plate


6
New cards

long bone growth

takes place on growth plate=cartilage

aka hyaline cartilage

-zone of resting cartilage: top, condracytes, because they are resting: not in process of long bone

-zone of proliferating cartilage: large carorcells dividing, pushes diaphysis to epiphysis, gets bigger to zone of maturing

zone of maturing cartilage: more levels, cells getting bigger, pushed further further apart

zone of calcified cartilage: secrets mineral salts from blasts

7
New cards

stages in bone healing

  1. hematoma formation: great bleeding, cells rush to cite, inflammed

  2. formation of callus: repairs tissue, formed a few days after, soft callus forms

  3. Bony callus formation: osteoblasts begin to produce new bone and takes 3-4 weeks

  4. Bone remodeling: dead portions are removed by osteoclasts and compact bone replaces spongy bone