Skeletal System Overview. Bones are alive These are dead bones These are living bones.
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Transcript of Skeletal System Overview. Bones are alive These are dead bones These are living bones.
Skeletal System Overview
Bones are alive
These are dead bones These are living bones
Bones are alive
Living bones: Form Grow Repair Remodel Move at joints (with
help from muscles)
Skeletal System Overview – Structure
System = Skeletal
Organs = Bones + Joints Newborns have 270 individual bones Adults have 206 individual bones Joints include bone, muscle, tendons,
ligaments and cartilage
Tissues = Connective Bone = compact bone; spongy bone Cartilage = hyaline cartilage;
fibrocartilage Tendons and ligaments = dense
Skeletal System Overview – Functions
Movement Involves (2) or more bones at joints Variety of joint types provides a variety of
movement types
Protection Skull and ribs
Support You would be an ameoba without it
Mineral Storage Stores calcium required by nerves and muscles
Blood Cell Formation In bone marrow
Skeletal System – Normal Function
Skeletal System
Normal Function
Support
Protection
Movement
Mineral Storage
Blood Cell Production
Skeletal System Unit
Normal Physiology Bones – Anatomy and Physiology Joints – Anatomy and Physiology
Abnormal Physiology Case Study: Osteoporosis Orthopedic Knee Problem Project
Ligament Injury Cartilage Injury Osteoarthritis Rheumatoid Arthritis
Skeletal System- Abnormal Function
Skeletal System
Abnormal Function
InjuryBone Joint
DiseaseInfectionCancerGenetic
EnvironmentalDevelopmental
No/LimitedMovement
SupportProtection
Mineral StorageBlood Cells
Skeletal System Abnormalities - Injury
Bone Fractures – simple or compound Loss of support and movement
Ligament – tear or strain Loss of joint stability
Cartilage – tear Loss of joint stability Interferes with normal movement
Skeletal System Abnormalities – Disease
Cancer Abnormal Cell Growth Damages bone
structure Can spread to other
tissues
Skeletal System Abnormalities – Developmental
Joint Formation Lumbosacral agenesis Improper vertebral joints
impair movement
Skeletal System Abnormalities – Genetic/Environmental
Scoliosis Abnormal curvature of
spine Caused by multiple
factors Produces painful/limited
movement
Skeletal System Abnormalities – Genetic/Environmental
Rheumatoid Arthritis Autoimmune disease
– body attacks its own tissues
Damages joint tissue Pain and abnormal
structure interferes with normal movement
Skeletal System Abnormalities – Genetic
Dwarfism Abnormal skeletal growth 20+ different forms of
dwarfism Genetic cause
Skeletal System Abnormalities – Multiple Causes
Osteoporosis ‘Pores in the bone’ Caused by loss of
calcium-based matrix Weakened bones are
more prone to fracture Aging, diet and various
diseases can be the cause