Skeletal System Flashcards
It is the internal framework of the body.
Skeletal System
It consists of bones, cartilages, and joints.
Skeletal System
Give the 5 Functions of the Bones:
- Support
- Protection
- Allow Movement
- Storage
- Blood Cell Production
It is a blood cell formation that occurs within the cavities of certain bones.
Hematopoiesis
What are the kinds of Bone Cells?
Osteblast, Osteocytes, Osteoclasts
It is a bone-building cells; produce colagen and secrete calcium and phosphate.
Osteoblast
It is the formation of new bone by osteoblasts.
Ossification
The Bone Matrix must have?
35% Organic: collagen & phosphate
65% Inorganic: Calcium Phosphate Crystals (HYDROXYAPATITE)
What happened to the bone if it has less collagen?
It makes the bone brittle.
What happened to the bone if it has less calcium?
The bone will become bendable.
It is a matured bone cells that covers the 90-95% of bone cells.
Osteocytes
What is the lofe span of an osteocytes?
25 years
It is a small canals for transport of nutrients and waste product.
Canaliculi
It is a thin sheets of extracellular matrix; the layers of compact bone.
Lamallae
It is a bone destroying cells; Bone reabsorption.
Osteoclasts
A bone stem cells that developed embryologically from Mesenchymal Cells; It is the first bone cell.
Osteoprogenitor Cells
A multipotent stem cells that can differentiate into a variety of cell types.
Mesenchymal Cells
The total bone of an adult skeleton.
206 bones
The 2 Types of Bones:
Spongy Bone and Compact Bone
It is a Cancellous Bone that consists of interconnecting rods or plates and found between the trabeculae.
Spongy Bone
It is a cortical bone and the solid, outer layer sorrounding each bone.
Compact Bone
It is the functional unit of a long bone.
Osteons
It is the interconnecting rods or plates of bone.
Trabeculae
A central canal where blood vessels enter.
Haversian Canal
It is a perforating canals that deliver blood to one central canal to another.
Volkmann Canal
Give the 5 kinds of shape does a Bone have:
- Long Bones
- Short Bones
- Flat Bones
- Irregular Bones
- Sesamoid Bone
It is the majority of Bones in the body.
Long Bones
Give an Example of a Long Bones.
Humerus & Femur
It is called the shaft of a long bones; the center portion of the bone.
Diaphysis
It is called the ends of long bones; Made if thin layer of conpact bone; covered with hyaline cartilage.
Epiphysis
It is alse called as a growth plate and located between epiphysis and the diaphysis.
Epiphysial Plates
When bone growth stops, the cartilage of each epiphyseal plate is replaced by bone and becomes _____?
Epiphyseal Line
The site of hematopoiesis or blodd formation; found in fetus.
Red Marrow
It is mostly adipose tissue and contains mesenchymal stem cells to produce cartilage.
Yellow Marrow
A connective tissue membrane covering the outer surface of a bone.
Periosteum
A peforating fibers are collagen fibers of tendons or ligaments that penetrate the periosteum for attachment.
Sharpey Fibers
It is the interior framework of spongy bone sandwiched between two layers of conpact bone.
Flat Bones
Give an example of a Flat Bones:
Sternum, scapula, pelvis, cranial bones.
These are compact bon surfaces sorrounding a spongy bone center with small spaces that are usually filled with marrow.
Short Bones
Give an example of Short Bones:
Tarsals & Carpals
It is similar to shortbones, not elongated abd no diaphysis.
Irregular Bones
Give an example of Irregular Bones:
Vertebra (spine), facial bones
Bones that embedded on tendons and protect tendons from stress and wear.
Sesamoid Bone