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Muscular System. What’s this?. What’s this?. Canker sore! Shallow ulcers in the mouth What causes them? Stress or tissue trauma Citrus can trigger or worsen symptoms B12, zinc, iron deficiency Different than cold sores. Review. Review. Producing Movement Maintain posture and position

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What s this1
What’s this?

  • Canker sore!

    • Shallow ulcers in the mouth

  • What causes them?

    • Stress or tissue trauma

    • Citrus can trigger or worsen symptoms

    • B12, zinc, iron deficiency

    • Different than cold sores



Review1
Review

  • Producing Movement

  • Maintain posture and position

  • Stabilize joints

  • Generate heat


Producing movement
Producing Movement

  • Obvious here, muscles create movement

  • Muscle create the ability to walk, swim, run

  • Circulate blood, maintain blood pressure

  • Force food through intestines/stomach


Maintain posture position
Maintain Posture/Position

  • Everybody Stand up!

  • Remove the shoe of your dominant foot

  • Balance on your dominant foot for 1 minute

  • Notice the slight twitches of your foot to maintain balance


Stabilizing joints
Stabilizing Joints

  • Muscles/tendons cross the joints

    • EX: Shoulder/Hip

  • Extremely important for unstable joints


Generate heat
Generate Heat

  • In any energy system, there are by product

  • When you exercise, what happens to your body?

    • Cars- Exhaust

    • Exercise-heat


Skeletal muscle
Skeletal Muscle

  • Attaches to bone via tendons

    • Attaches to skin in the face

  • Voluntary from nervous system

  • Striated muscle (obvious stripes)

  • Contracts quickly, but also fatigues quickly


Type i v type ii
Type I v. Type II

  • Type I – Slow twitch

  • Type II – Fast twitch

    • Type II(a)

    • Type II(b)


Type i
Type I

  • Oxygen efficient

  • Necessary for extended muscle contraction (over time)

  • Longer time before fatige


Type ii
Type II

  • Anaerobic

  • Speed and strength

  • Fatigue quickly

  • Type II(a)

    • Combination of type I and type II

  • Type II(b)

    • Classic fast twitch

    • Rapid firing


Muscle tissue anatomy
Muscle Tissue Anatomy

  • Muscle Fiber

  • Endomysium

  • Fascicle

  • Perimysium

  • Epimysium

  • Tendon



Activity
Activity!

  • Demonstration using food!

  • Each table will get 2-3 twizzlers.

  • Using saran wrap, post it notes and the twizzlers, create a diagram that shows the structure of muscle


Homework
Homework

  • Define terms from the reading:

    • Striated Muscle

    • Voluntary Muscle

    • Fascicle

    • Endomysium

    • Perimysium

    • Epimysium

      Possible quiz next class!


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