section 11.1 your skeletal system slide 1 of 24 objectives identify the five main roles of the...
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Section 11.1 Your Skeletal System
Slide 1 of 24
Objectives
Identify the five main roles of the skeletalsystem.
Section 11.1 Your Skeletal System
Explain how you can keep your skeletal system healthy.
Section 11.1 Your Skeletal System
Slide 2 of 24
Your skeletal system has five main roles.
Functions of the Skeletal System
• provides support
• protects internal organs
• allows your body to move
• stores and produces materials that your body needs
Section 11.1 Your Skeletal System
Slide 3 of 24
• Your skeleton is made up of all the bones inyour body.
Support and Protection
• *Your skeleton gives your body its basic shape and provides the support that you need.
• *Many bones of the skeletal system protect internal organs.
Section 11.1 Your Skeletal System
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*In coordination with your muscular and nervous systems, your skeletal system allows you to move.
Movement
Section 11.1 Your Skeletal System
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• *Your bones store essential substances which are released when other parts of the body need them.
Storage and Production of Materials
• *Some bones also produce blood cells.
Section 11.1 Your Skeletal System
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The Skeletal System
1) Sternum (breastbone)
2) Vertebral column (backbone)
3) Carpals
4) Metacarpals
5) Phalanges
6) Tarsals
7) Metatarsals
8) Phalanges
9) Clavicle (collarbone)
10) Scapula (shoulder blade)
11) Humerus
12) Ribs
13) Radius
14) Ulna
15) Pelvic girdle
16) Femur
17) Patella
18) Fibula
19) Tibia
Skull
Section 11.1 Your Skeletal System
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• Your bones are living structures that undergo change throughout your life.
Development of Bones
• Cartilage is a tough supportive tissue that is softer and more flexible than bone.
• By young adulthood, most of this cartilage is replaced by bone in a process called ossification (ahs uh fih KAY shun).
• In a process called ossification minerals, such as calcium and phosphorus, are deposited within the cartilage, making it hard.
Section 11.1 Your Skeletal System
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• Bone consists of two different types of tissue—compact bone and spongy bone.
Structure of Bones
• Another type of tissue called marrow fills the spaces in bones.
• *There are two types of marrow—red and yellow.• Red Makes Red Blood Cells • Yellow stores fat cells
Section 11.1 Your Skeletal System
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• Adequate intake of calcium and phosphorus will help your bones grow to their maximum size and strength.
Eating Well
• *Osteoporosis is a condition in which the bones become weak and break easily.
Section 11.1 Your Skeletal System
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• *Another way to build strong bones and prevent osteoporosis is to get plenty of weight-bearing exercise.
Exercising
• *Activities in which the bones support the entire weight of your body help your bones grow strong and dense.
Calcium RDA (Recommended Daily Amount)
Section 11.1 Your Skeletal System
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Medical Conditions of the Spine
• *Scoliosis (skoh lee OH sis), an abnormal curvature of the spine.
• *Lordosis, an abnormal arch in the lower back (lumbar)
• i.e. Swayback• *Kyphosis, a posture problem characterized by
rounded shoulders and sunken chest
Section 11.1 Your Skeletal System
Slide 12 of 24
1
2
345
67
8
910
1112
13
1415
16
1718
19
The Skeletal System
1) Sternum (breastbone)
2) Vertebral column (backbone)
3) Carpals
4) Metacarpals
5) Phalanges
6) Tarsals
7) Metatarsals
8) Phalanges
9) Clavicle (collarbone)
10) Scapula (shoulder blade)
11) Humerus
12) Ribs
13) Radius
14) Ulna
15) Pelvic girdle
16) Femur
17) Patella
18) Fibula
19) Tibia
Skull