Musculature System

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Musculature System
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How Muscles and Bones Interact

• 1. Skeleton muscles generate force and produce
  movement only by contracting or pulling on body
  parts.
• 2. Individual muscles can only pull they cannot
  push.
• 3. Skeleton muscles are joined to bone by tough
  connective tissue called tendons.
• 4. Tendons are attached in such a way that they
  pull on the bones and make them work like levers.
  The movements of the muscles and joints enable
  the bones to act as levers.

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• 5. Most skeletal muscles work in pairs.
• 6. When one muscle or set of muscles contracts,
  the other relaxes.
• 7. The muscles of the upper arm are a good
  example of this dual action a flexor, is a
  muscle that bends a joint, while an extensor is a
  muscle that straightens a joint.
• a. when the biceps muscle (on the front of the
  upper arm,
  flexor) contracts, it bends or flexes the elbow
  joint.
• b. when the triceps muscle (on the back of the
  upper arm, extensor) contracts, it opens, or
  extends, the elbow joint.
• c. a controlled movement requires contraction
  by both muscles

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Involuntary Muscles

• Involuntary muscles are muscles that are not
  under your conscious control
• Involuntary muscles are responsible for
  activities such as breathing and digesting food

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Voluntary Muscles

• Voluntary muscles are under your control, you
  cause your body to move
• Voluntary muscles are used when you smile, turn a
  page in a book, get out of your chair etc.

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Types of Muscles

• There are three types of muscle tissue skeletal
  muscle, smooth muscle, and cardiac muscle
• The skeletal muscles are voluntary muscles
• The smooth muscle and the cardiac muscle are
  involuntary

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3 types of muscle under microscope
Smooth Muscle ?
Cardiac Muscle
?Skeletal Muscles
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Skeletal Muscle

• Skeletal muscles help you move, they are attached
  to the bones of your skeleton
• At the end of the skeletal muscle is a tendon,
  which is a strong connective tissue that connects
  the muscle to the bone.
• Skeletal muscle cells appear banded, or striated
• One characteristic of skeletal muscles is that
  they react very quickly

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Smooth Muscle

• Smooth muscles are muscles that you do not
  control.
• Smooth muscles can be found inside of many
  internal organs of the body, such as the walls of
  the stomach and blood vessels
• Unlike skeletal muscles, smooth muscles are not
  striated.
• smooth muscles react more slowly and tire more
  slowly

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Cardiac Muscle

• Cardiac muscle is only found in the heart
• Cardiac muscle is involuntary
• Cardiac muscles are striated
• Cardiac muscles do not get tired and they
  contract repeatedly

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Quick Contaction

• Action Potential
• Muscle Contraction

• ehlers-danlo

• myofilament contraction
• Sarcomere Contraction
• ATP Breakdown