skeletal system

31問 • 2年前

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major function

major support for tge body bones protect internal organ joints allow body movement bones storeand release mineral bone marrow give rise to blood cells and platelet

extracellular matric

bones cartilage tendons ligaments are all connective tissue

component of skeletal

bone cartilages tendons an ligaments

Works as a support structure for your body. • It gives the body its shape, allows movement, makes blood cells, provides protection for organs, and stores minerals.

skeletal system

4 categories of bone and their shape

long bone short bone flat bone irregular bone

Are cells that form bone tissue. It can synthesize and secrete bone matrix and participate in the mineralization of bone to regulate the balance of calcium and phosphate ions in developing bone. Responsible for formation of bone, repair, and remodeling,

osteoblast

• contribute to bone repair and remodeling by removing existing bone called bone reabsorption

osteoclast

BONES ARE MADE OF TWO TISSUE TYPES

Compact bone also known as cortical bone, this hard-outer layer is strong and dense. Cancellous bone- also known as trabecular bone, this spongy inner layer network of trabeculae is lighter and ess dense than cortical bone.

it is found in the long bones and it is surrounded by compact bone.

spongy bone

surrounds spongy bone. They are heavy. tough and compact in nature

compact bone

structural unit of comoactbone and LLCCO

osteon

ring of bone matrix

lamella

space between lamella

lacunae

interconnecting rods in which soaces contains marrow

trabeculae

The process of bone formation by osteoblast (occurs in utero);

bone ossification

after an osteoblast becomes surrounded by bone martric it became an

osteocytes

Types of Bone Formation

Intramembranous ossification endochondral ossification

this occurs within the connective tissue membranes: primarily in skull bones

intramembranous ossification

this occurs inside hyaline cartilage: primarily in all bones (except skull) Chondroblasts build a cartilage model, the chondroblasts become chondrocytes

Endochondral Ossification

formerly called compound fracture; occurs when an open wound extends to the site of fracture or when a fragment of bone protrudes through the skin.

Open Fracture

formerly called simple fracture; occurs when the skin is not perforated 3. Complicated Fracture-occurs when the soft

Closed Fracture

-occurs when the soft tissues around a closed fracture are damaged

Complicated fracture

comprised of the upper and lower extremities, which include the shoulder girdle and pelvis.

appendicular skeleton

made up of the 80 bones within the central core of your body. It includes bones in our skull ears, neck, back, and ribcage.

axial skeleton

This occurs by the deposition of new bone lamellae onto existing bong or other connective tissue. Bone elongation occurs at the epiphyseal plate as the chondrocytes proferate enlarge, die, and are replaced by bone

bone growth

is a process in which the bone increases in width or diameter,

appositional growth

Long bones lengthen at epiphyseal plate and widen by adding more lamella

infancy and youth

Epiphyseal plate is replaced by an epiphyseal line

end of bone( in length)

This is the removal of existing bone by osteoclasts and deposition of new bone by osteoblasts which occurs in all bones. It is responsible for changes in bone shape, bone repair, adjustment of bone to stress, and cium ion regulation

bone removal

bones become thick or develop abnormal spurs, or projections that can interfere with normal function

Too much is deposited

weakens the bones & making them susceptible to fracture

too little bone formation

MODULE 3a

charish · 23問 · 2年前

MODULE 3a