STRUCTURAL BODY SYSTEMS. SKELETAL SYSTEM What is the skeletal system made up of?
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Transcript of STRUCTURAL BODY SYSTEMS. SKELETAL SYSTEM What is the skeletal system made up of?
![Page 1: STRUCTURAL BODY SYSTEMS. SKELETAL SYSTEM What is the skeletal system made up of?](https://reader035.fdocuments.in/reader035/viewer/2022062305/5697bfb81a28abf838c9f0aa/html5/thumbnails/1.jpg)
STRUCTURAL BODY
SYSTEMS
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SKELETAL SYSTEM
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What is the skeletal system made up of?
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Bones, Cartilage, and tendons
Approximately 206 bones make up the body
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What is in a bone?
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Bones are living organs (made up of several different tissues)
Made up of connective tissue and minerals that are deposited by living cells (osteoblasts)
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What are the two types of tissue? S
pongy
COMPACT
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Compact bone – tissue that doesn’t have much visible open spaces
Spongy bone – provides most strength and support for the bone
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What is bone
marrow?
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Bone marrow produces red and white blood cells.
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What is cartilage?
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Bones start off as a soft and flexible tissue called cartilage.
During childhood growth plates of cartilage remain in most bones to allow for continued growth.
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What is a joint?
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A place where two or more bones connect.
Allow body to move when your muscles contract.
Held together by ligaments
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What is the purpose of
skeletal system?
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ProtectionHeart and lungs are shielded by your ribs
Spinal cord is protected by your vertebrae,
Brain is protected by skull
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StorageStore minerals that help the nerves and muscles function properly
Store fat to use for energy
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MovementSkeletal muscles pull the bones to produce movement
Without them you couldn’t walk, sit or stand
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Blood cell formationFilled with marrow that makes blood cells
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Skeletal Disorders Compound Fracture - when the bone
breaks completely and tears through the skin! OUCH!!!
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Disorders Continued… Ankle Sprain – when damage is done to
ligaments around the ankle.
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Osteoporosis The degeneration of bone mass over time.
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The Muscular System
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What does the muscular system do?
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Works with the skeletal system to move the body
Push blood through vessels
Helps with digestion
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What are the different types of muscles?
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Smooth muscle – found in digestive tract
Cardiac muscle – found in heart
Skeletal muscle – attached to bones for movement (protects inner organs).
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What is the difference between voluntary and involuntary muscles?
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Voluntary – Under your control (working out biceps, triceps etc.)
Involuntary – Not under your control (smooth and cardiac are involuntary).
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How do muscles work in pairs?
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Skeletal muscles work in pairs to cause smooth, controlled movements.
When the biceps contract, the elbow bends. When the triceps contract , the elbow straightens.
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Flexors Flexors are muscles that contract as the
muscle shortens.
Ex. Biceps
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Extensors
Extensors are muscles that contract as the muscle extends.
Ex. Triceps
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What are the two basic types of exercises?
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Resistance exercise – develops strength of skeletal muscles. (Lifting weights, sit ups etc.)
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Aerobic exercise – steady, moderate activity such as jogging, cycling. Strengthens skeletal some, but mostly strengthens heart and increases endurance.
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Oh yeah! Girls can build muscle too!!!
Click to next slide
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Don’t tell my wife. She hasn’t seen this photo yet!
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Integumentary System
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What makes up the integumentary system?
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Skin, hair, and nails
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Why do you need your skin?
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Skin protects you by keeping moisture in your body and foreign particles out.
Nerve endings allow you to feel what’s around you
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Defense Skin is the largest organ.
1st line of defense against infections.
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Helps to regulate your body’s temperature through sweat glands producing sweat.
Helps to get rid of waste.
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Sweat helps to regulate temperature.
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What is melanin?
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A chemical that determines skin color.
The amount of melanin varies from person to person.
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What are the two basic layers of skin?
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Epidermis – The part of the skin that you can see.
Most epidermal cells are dead and filled with a protein called keratin.
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Dermis – the deeper, thicker layer of your skin.
Lies underneath the epidermis
Mostly connective tissue and contains collagen that allows skin to bend without tearing.
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What is the importance of hair?
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Hairs protect skin from ultraviolet light and help keep particles such as dust, out of your eyes and nose.
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What is a hair follicle?
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A tiny sac where hair grows as new cells.
Pushes up older cells – the only living cell in a hair are the in the hair follicle.
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What are the purpose of nails?
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To protect the tips of your fingers and toes so that they can remain sensitive.
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Skin Disorders Acne
Too much oil, dead skin, and
bacteria can clog pores.
This is the result!
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Squeezing makes them worse! Keep face clean.
Don’t Squeez!