Skeletal Tissues

57 terms by IzzahKhan 

Create a new folder

Advertisement Upgrade to remove ads

Long bones

Femur and humerus

short bones

carpals and tarsals

flat bones

ribs, pelvis, sternum, skull

irregular bones

vertebrae, facial bones

Sesamoid bones

patella

Diaphysis and Epiphyses

seperated by epiphysis plate

Diaphysis

main shaft, compact bone for support

Epiphyses

ends with spongy bone; has red marrow, tendon muscle attachment

Articular cartilage

hyaline, cartilage, covers joints; cushion

periosteum

covers bones; attaches tendons

medullary cavity

yellow marrow (fat)

endosteum

lines medullary cavity

inorganic salts

calcium and phosphate crystals

Calcification

Deposit crystals

measuring bone mineral density

osteoporosis (indicator)

organic matrix

fibers, protein, polgysaccharides, chondrotin sulfate and gulcosamine for repair (over the counter)

Compact bone

...

Osteon

unit of compact bone

lamellae

concentric rings of calcified matrix

lacunae

spaces with bone cells

canaliculi

connect lacunae

haversian canal (central canal)

blood vessels and nerves (longitdunal (length))

perforating canal (volkmann canals)

blood vessels and nerves (horizontal) connect haversian canals

Cancellous bone

no osteons or haversian system

spicules

needlelike bondy structure; line along lines of stress

trabeculae

network made of spicules

types of bone cells

osteoblasts, clasts, and cytes

osteoblasts

bone forming cells

osteoclasts

active erosion of bone; breaks down bone cells

osteocytes

mature nondividing osteoblasts

bone marrow

myeloid tissue, red marrow, yellow marrow

myeloid tissue

...

red marrow

produce red blood cells (RBC) adults - ribs vertrabe humerus, femur and pelvis

yellow bone

replace red marrow, cell filled with fat

Functions of bone

support, protection, movement, mineral storage, hematoposeiss

Movement

join and muscle attachment

mineral storage

calcium and phosporous

hematopoesis

blood cell formation (red marrow)

machanisms of calc homeostasis

parayhtroid hormon, calcitonin

parathyroid hormone

increase calcium absorpotion (From intestine to blood) stiumlate oesteoclasts and releace calcium in blood

calcitonin

stimulate depression of osteoblasts (build bone by having calciuim from blood and into bone matrix)

Development of bone

intramembranous ossifiction, endochondral

intramembranous

formed with in tissue membrane, added to outer surface (oppositiional growth)

Endochondral ssification

Formed in cartilage - most bones form this way

Primary ossification center

middle of diaphysis

Secondary ossifc center

in epiphysis

Epiphyseal plate

(growth plate- add length to bones) carilage btw epi and diaphysis adds cartilage as you grow = then osisfied. Reduced thru childhood and and absent as adult

Bone growth and resorption

To incraese diameter - osteoclasts enlarge medullary cavity and osteoblasts built to outsides

stages of repair

Formation of fracture hematoma

formation of callus

bone remodeling

Formation of fracture hematoma

form blood clot

Formation of callus

temp. bind broken ends

bone remodeling

esteoclasts break down callus and osteoblasts replace w/ normal bone)

Types of cartilage

Hyaline, elastic, fibrocartilage

Hyaline cartilage

most abdundant (Ribs, sternum, and trachea, nose)

elastic cartilage

elastic fibers (ear, epiglottis)

fibrocartilage

mostly collagen fibers (pubic symphysis, vertebral disc)

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set