Topic: Skeletal SystemTopic: Skeletal System

AimAim: How does the skeletal system help : How does the skeletal system help us survive?us survive?

Do NowDo Now: What is the name for a group of : What is the name for a group of tissues working together to perform a tissues working together to perform a

function?function?

Topic: Skeletal SystemTopic: Skeletal System

AimAim: What are tissues? How many : What are tissues? How many different tissues are in our body?different tissues are in our body?

Do NowDo Now: Take your quiz.: Take your quiz.

Review: How is the body Review: How is the body organized?organized?

• Cells Cells Tissues Tissues Organs Organs Organ Organ Systems Systems Organism Organism

• CellsCells: smallest unit of structure and : smallest unit of structure and function in living thingsfunction in living things

• TissuesTissues: similar cells performing one : similar cells performing one functionfunction

• OrgansOrgans: group of tissues performing a : group of tissues performing a functionfunction

• Organ SystemsOrgan Systems: group of organs : group of organs performing a functionperforming a function

• Together, each level makes up an Together, each level makes up an organismorganism

What are the different types of What are the different types of tissues?tissues?

1.1. Muscle tissueMuscle tissue: only kind of tissue in : only kind of tissue in your body that can contract or shortenyour body that can contract or shorten

2.2. Nerve tissueNerve tissue: carries messages back : carries messages back and forth between the brain and other and forth between the brain and other parts of the bodyparts of the body

3.3. Connective tissueConnective tissue: supports and : supports and connects the body and its partsconnects the body and its parts

– Examples: bone (solid) and blood (liquid)Examples: bone (solid) and blood (liquid)

4.4. Epithelial tissueEpithelial tissue: covers and protects : covers and protects surfaces inside and outside the bodysurfaces inside and outside the body

What are our organ systems?What are our organ systems?

• RespiratoryRespiratory• ExcretoryExcretory• ImmuneImmune• MuscularMuscular• EndocrineEndocrine• ReproductivReproductiv

ee• DigestiveDigestive• CirculatoryCirculatory• SkeletalSkeletal• NervousNervous

Organ Systems

Skeletal Circulatory

Nervous

Immune

Respiratory

Digestive Reproductive

Endocrine

MuscularExcretory

What are the functions of the What are the functions of the skeletal system?skeletal system?

1.1. Provides shape and supportProvides shape and support

2.2. Allows for movementAllows for movement

3.3. Protects organs and tissuesProtects organs and tissues

4.4. Produces blood cellsProduces blood cells

5.5. Stores mineralsStores minerals

Topic: Skeletal SystemTopic: Skeletal System

AimAim: What are joints?: What are joints?

Do NowDo Now: Where are blood cells made?: Where are blood cells made?

Topic: Skeletal SystemTopic: Skeletal System

AimAim: What are bones?: What are bones?

Do NowDo Now: List the four types of tissue : List the four types of tissue found in our bodies and give an example found in our bodies and give an example

of each.of each.

What makes up the skeletal What makes up the skeletal system?system?

1.1. BonesBones

2.2. CartilageCartilage

3.3. LigamentsLigaments

4.4. TendonsTendons

What are bones?What are bones?• Made up of 2 Made up of 2

minerals, minerals, phosphorus and phosphorus and calcium, that calcium, that provide strengthprovide strength

• Marrow is found Marrow is found inside of the bone inside of the bone and produces and produces blood cellsblood cells

• Nerves and blood Nerves and blood vessels are found vessels are found in the canalsin the canals

What is osteoporosis?What is osteoporosis?

• Bones become weak and break easilyBones become weak and break easily

What is cartilage?What is cartilage?• Flexible connective tissueFlexible connective tissue• Provides protection, support, and Provides protection, support, and

cushioningcushioning• Can be found in nose, ears, ends of Can be found in nose, ears, ends of

bones, and between vertebraebones, and between vertebrae

What is a ligament?What is a ligament?

• Connects bone to boneConnects bone to bone

What is a tendon?What is a tendon?

• Connects muscle to boneConnects muscle to bone

What is a joint?What is a joint?• Where 2 bones meetWhere 2 bones meet• Two types of joints:Two types of joints:

1.1. ImmovableImmovable – allows NO movement – allows NO movement– Example: skullExample: skull

2.2. MovableMovable – allows movement – allows movement– Example: elbowExample: elbow

Immovable Joint - Immovable Joint - SkullSkull

What are the four types of What are the four types of movable joints?movable joints?

1.1. Ball and SocketBall and Socket: allows for circular motion: allows for circular motion• Examples: hip and shoulderExamples: hip and shoulder

2.2. PivotPivot: one bone rotates around another; : one bone rotates around another; allows side to side or up and down motionsallows side to side or up and down motions

• Example: neckExample: neck

What are the four types of What are the four types of movable joints?movable joints?

3.3. HingeHinge: “door hinges” allow forward : “door hinges” allow forward and backward motionsand backward motions

• Examples: elbow and kneeExamples: elbow and knee

4.4. GlidingGliding: allows one bone to slide over : allows one bone to slide over anotheranother

• Examples: ankle and wristExamples: ankle and wrist

Joints in MotionJoints in Motion

• http://www.bbc.co.uk/science/humanbody/body/factfiles/joints/spine_joints.shtml

Topic: Skeletal SystemTopic: Skeletal System

Aim: How can we diagnose bone injuries?

Do NowDo Now: Fill in #s 1-4 on the chart:: Fill in #s 1-4 on the chart:The Skeletal System

Part Function

Bone 1.

2. Connects muscles to bones

3. Flexible connective tissue found at the ends of bones and used as cushioning

Ligament 4.

Makes blood cellsTendo

nCartilage

Connects bone to bone