Transcript Topic: Skeletal System

Topic: Skeletal System
Aim: How does the skeletal system help us
survive?
Do Now: What is the name for a group of
tissues working together to perform a
function?
Topic: Skeletal System
Aim: What are tissues? How many
different tissues are in our body?
Do Now: Take your quiz.
Review: How is the body organized?
• Cells  Tissues  Organs  Organ
Systems  Organism
• Cells: smallest unit of structure and
function in living things
• Tissues: similar cells performing one
function
• Organs: group of tissues performing a
function
• Organ Systems: group of organs
performing a function
• Together, each level makes up an organism
What are the different types of
tissues?
1. Muscle tissue: only kind of tissue in your
body that can contract or shorten
2. Nerve tissue: carries messages back and
forth between the brain and other parts
of the body
3. Connective tissue: supports and connects
the body and its parts
–
Examples: bone (solid) and blood (liquid)
4. Epithelial tissue: covers and protects
surfaces inside and outside the body
What are our organ systems?
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Respiratory
Excretory
Immune
Muscular
Respiratory
Endocrine
Reproductive
Nervous
Digestive
Circulatory
Skeletal
Nervous
Skeletal
Immune
Excretory
Muscular
Organ
Systems
Endocrine
Circulatory
Digestive
Reproductive
What are the functions of the skeletal
system?
1.
2.
3.
4.
5.
Provides shape and support
Allows for movement
Protects organs and tissues
Produces blood cells
Stores minerals
Topic: Skeletal System
Aim: What are joints?
Do Now: Where are blood cells made?
Topic: Skeletal System
Aim: What are bones?
Do Now: List the four types of tissue found
in our bodies and give an example of each.
What makes up the skeletal system?
1.
2.
3.
4.
Bones
Cartilage
Ligaments
Tendons
What are bones?
• Made up of 2
minerals, phosphorus
and calcium, that
provide strength
• Marrow is found
inside of the bone
and produces blood
cells
• Nerves and blood
vessels are found in
the canals
What is osteoporosis?
• Bones become weak and break easily
What is cartilage?
• Flexible connective tissue
• Provides protection, support, and
cushioning
• Can be found in nose, ears, ends of bones,
and between vertebrae
What is a ligament?
• Connects bone to bone
What is a tendon?
• Connects muscle to bone
What is a joint?
• Where 2 bones meet
• Two types of joints:
1. Immovable – allows NO movement
– Example: skull
2. Movable – allows movement
– Example: elbow
Immovable Joint - Skull
What are the four types of movable
joints?
1. Ball and Socket: allows for circular
motion
•
Examples: hip and shoulder
•
Example: neck
2. Pivot: one bone rotates around another;
allows side to side or up and down motions
What are the four types of movable
joints?
3. Hinge: “door hinges” allow forward and
backward motions
•
Examples: elbow and knee
4. Gliding: allows one bone to slide over
another
•
Examples: ankle and wrist
Joints in Motion
• http://www.bbc.co.uk/science/humanbo
dy/body/factfiles/joints/spine_joints.s
html
Topic: Skeletal System
Aim: How can we diagnose bone injuries?
Do Now: Fill in #s 1-4 on the chart:
The Skeletal System
Part
Bone
2.
3.
Tendon
Cartilage
Ligament
Function
1.
Makes blood cells
Connects muscles to bones
Flexible connective tissue
found at the ends of bones
and used as cushioning
4. Connects bone to bone