The Skeletal SystemThe Skeletal System

The Skeletal System The Skeletal System What is a Bone? The Inside of a Bone Four Main Jobs of a Bone The Spine Ribs Hands and Feet Hips and Legs Arms Joints Joints Movie Quiz About the Author References Concept Map

Quit

What is a Bone?What is a Bone?

The skeletal system is made up of the bones The skeletal system is made up of the bones and cartilage that forms the framework of your and cartilage that forms the framework of your body.body.

We have bones so that we are not a puddle of We have bones so that we are not a puddle of skin and guts on the floor.skin and guts on the floor.

Babies have more bones in their bodies.Babies have more bones in their bodies. Adults have 206 bones. Adults have 206 bones.

MainMenu

The Inside of a BoneThe Inside of a Bone

A bone is made up of salts, water, and tissue.A bone is made up of salts, water, and tissue. 2 Types of Bone: Compact and Cancellate 2 Types of Bone: Compact and Cancellate Inside a bone there is a jelly substance called Inside a bone there is a jelly substance called

bone marrow.bone marrow. Bone marrow produces blood cells for the Bone marrow produces blood cells for the

body. body.

QuitMainMenu

Four Main jobs of a Bone:Four Main jobs of a Bone:1.1. To protect your body and To protect your body and

give it shape.give it shape.

2.2. To protect your internal To protect your internal organs.organs.

3.3. To provide a scaffolding for To provide a scaffolding for your muscles, allowing you your muscles, allowing you to move.to move.

4.4. To store minerals and make To store minerals and make blood cells.blood cells.

QuitMainMenu

The SpineThe Spine The spine is the central support The spine is the central support

for the body. for the body. The spine is made up of separate The spine is made up of separate

bones called vertebrae.bones called vertebrae. Between each vertebrae is Between each vertebrae is

cartilage which keeps bones from cartilage which keeps bones from rubbing against each other. rubbing against each other.

FUN FACT: there are 26 FUN FACT: there are 26 vertebrae in the human body. vertebrae in the human body.

Quit MainMenu

RibsRibs

““Your rib cage is made up of 12 vertebrae, 24 Your rib cage is made up of 12 vertebrae, 24 ribs and a breastbone in three parts. It protects ribs and a breastbone in three parts. It protects your heart and lungs from knocks and bumps.”your heart and lungs from knocks and bumps.”

Quit MainMenu

Hands and FeetHands and Feet The bones in your hands and feet are VERY flexible. The bones in your hands and feet are VERY flexible. The foot has 26 bones. (tarsals, metatarsels, and The foot has 26 bones. (tarsals, metatarsels, and

phalanges) phalanges) The hand has 27 bones. (metacarpals, carpals, and The hand has 27 bones. (metacarpals, carpals, and

phalanges) phalanges) Bones in the toes are shorter and fatter than the bones Bones in the toes are shorter and fatter than the bones

in the fingers. This helps us to balance on two feet.in the fingers. This helps us to balance on two feet.

QuitMainMenu

Hips and LegsHips and Legs The hip bone helps us to The hip bone helps us to

stand upright and move. Hip stand upright and move. Hip bones support most of bones support most of weightweight

The main bones of the legs The main bones of the legs are the tibia, fibia, and are the tibia, fibia, and femur. femur.

The patella (kneecap) is in-The patella (kneecap) is in-between the leg bones.between the leg bones.

QuitMainMenu

ArmsArms

The bones in the arm are very The bones in the arm are very flexible.flexible.

The three bones that make up The three bones that make up the arm are the ulna, radius, and the arm are the ulna, radius, and humerus. humerus.

The two bones that form the The two bones that form the shoulder are the clavicle and the shoulder are the clavicle and the scapula. scapula.

QuitMainMenu

JointsJointsThe Pivot Joint Hinge JointThe Pivot Joint Hinge Joint

The Gliding Joint Ball-and-socket JointThe Gliding Joint Ball-and-socket Joint

View More on Joints!

QuitMainMenu

Pivot JointPivot Joint

The only pivot joint in your body is located in The only pivot joint in your body is located in your neck.your neck.

It allows you to turn your head left and right.It allows you to turn your head left and right.

Hinge JointHinge Joint

Hinge- Hinge- A hinge joint allows extension and A hinge joint allows extension and retraction of an appendage. (Elbow, Knee)retraction of an appendage. (Elbow, Knee)

Glidding JointGlidding Joint

Gliding- Gliding- In a gliding or plane joint bones In a gliding or plane joint bones slide past each other. Mid-carpal and mid-slide past each other. Mid-carpal and mid-tarsal joints are gliding joints. (Hands, tarsal joints are gliding joints. (Hands, Feet)Feet)

Ball and Socket JointBall and Socket Joint

Ball and Socket-Ball and Socket- A ball and socket joint A ball and socket joint allows for radial movement in almost any allows for radial movement in almost any direction. They are found indirection. They are found in the hips and the hips and shoulders. (Hip, Shoulder)shoulders. (Hip, Shoulder)

QuizQuiz1.1. How many bones are in an adult? 4. What is another name for kneecap?How many bones are in an adult? 4. What is another name for kneecap?A.A. 342342 bones AA. SternumB. 100 bones B. B. PhalangesC. 85 bones C. C. TibiaD.D. 206206 bones D. D. Patella

2. What is the jelly substance inside a bone called?2. What is the jelly substance inside a bone called? 5. The legs are connected to what5. The legs are connected to what ??A. Cartilage A. A. The Hips (Pelvis)B. Bone Marrow BB. SkullC. Compact Bone C. C. HandsD. Joints D. D. Heart

3.What Bone protects the internal organs 3.What Bone protects the internal organs BONUS QUESTION!!!BONUS QUESTION!!! like the lungs and heart?like the lungs and heart? What joint is found in the ankle?What joint is found in the ankle?A. The Spine A. A. Pivot JointB. The Femur B.B. Gliding JointC. The Ribs C.C. Hinge JointD. Pelvis D.D. Ball-and-socket Joint

QuitMainMenu

Video ReviewVideo Review

http://www.discoveryeducation.com/administrators/curricular-resources/science/index.cfm

Minutes 6:44-13:00/ 13:38-15:00Minutes 6:44-13:00/ 13:38-15:00

ReferencesReferences Great Source Education Group. Great Source Education Group. Science Saurus: A Science Saurus: A

Student Handbook. Student Handbook. Wilmington: Great Source Education Wilmington: Great Source Education Group, 2006. Group, 2006.

http://library.thinkquest.org/5777/ske1.htm http://www.mnsu.edu/emuseum/biology/http://www.mnsu.edu/emuseum/biology/

humananatomy/skeletal/skeletalsystem.htmlhumananatomy/skeletal/skeletalsystem.html http://www.dhmc.org/dhmc-internet-upload/http://www.dhmc.org/dhmc-internet-upload/

file_collection/ms.web.ms5347.xray.jpgfile_collection/ms.web.ms5347.xray.jpg www.unitedstreaming.comwww.unitedstreaming.com http://services.epnet.com/getimage.aspx?imageiid=4695http://services.epnet.com/getimage.aspx?imageiid=4695

QuitMainMenu