the skeletal system structure of bone. skeletal system the entire framework of bone and their...
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The Skeletal System
Structure of Bone
Skeletal System The entire framework of bone and
their associated cartilages
Each individual bone is considered an organ because it is composed of several different tissues working together.
Osteology The study of the structure of bone
and the treatment of bone disorders
Orthopedics The branch of medicine that deals
with the preservation and restoration of bone
Functions of Bone and The Skeletal System Bone tissue and the skeletal
system perform several basic functions: Support Protection Movement Mineral Storage Hemopoiesis Energy Reserve
Support Provides a framework for the body
by supporting soft tissues and providing points of attachment for most skeletal muscles
Protection Protects many internal organs from
injury
Movement Skeletal muscles attach to bones.
When the muscle contracts, it pulls the bones to create desired movements
Mineral Storage & Homeostasis Bone tissue stores minerals such
as calcium and phosphorus. Bone can release these minerals into the blood to maintain critical concentrations and maintain homeostasis
Production of Blood Cells Red Bone Marrow – a connective
tissue within certain bones that produces RBC’s, WBC’s and platelets. Hemopoiesis – the process of making
blood cells
Triglyceride Storage Yellow bone marrow found in
certain bones stores triglycerides in adipocytes. These are a potential energy reserve for the body.
TYPES OF BONES There are 6 main types of bones:
Long Short Flat Irregular Sutural Sesamoid
Long Bones Bones that are greater in length
than they are in width Have 2 main parts
Body (shaft); Ends (extremities) Ex: Arms, Legs, Fingers, Toes
Short Bones Bones that are just as wide as they
are long Ex: Wrist and Ankle
Flat Bones Thin and Flat (duh) Used for protection and muscle
attachment Ex: cranial, sternum, ribs, scapula
Irregular Bones Complex shapes that cannot be
classified into any of the other categories
EX – Vertebrae, Facial bones
Sutural Bones Small bones that form between
joints in the cranium. The number can vary between individuals.
Sesamoid Bone Bone that develops in a tendon
where there is a lot of pressure
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