Chap 9 Muscle Tissue Intro, pgs 175 - 194

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Chap 9 Muscle Tissue Intro, pgs 175 - 194
Review lecture notes. Review Wrap-up practice
questions. Study diagrams discussed today.

• Learning Objectives
• Compare contrast the basic types of muscle
  tissue.
• Describe the characteristics of
• each muscle type.
• 3. Explain the effects of high intensity
  resistance exercise on skeletal muscle.

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What Is a Hernia? pg 177
Read about hernias in the Clinical Application
box on pg 177 in your workbook now. Answers these
questions now on this slide. 1. What are 3
different types of hernias?
2. What is a hiatal hernia exactly?
3. What is an umbilical hernia?
4. What is an inguinal hernia?
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DISCUSSION, pg 176 - 177
Taken from Self-check,
Question 1 pg 176

• What are the 3 types of muscle tissue?
• Where are they found?

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Muscle Overview, pg 177

• Three types of muscle tissue _______,
  ______________, and ___________. These differ in
  structure, function, and location.
• Mus (in the word muscle) means
  _________________ in Latin
• Myo or Sarco refers to ________

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Muscle Similarities

• Skeletal and smooth muscle cells are elongated
  and are called _____________.
• Muscle contraction depends on two kinds of
  myofilaments _____ and _______.
• Muscle terminology is similar
• Sarcolemma muscle plasma __________
• Sarcoplasm __________ of a muscle cell

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Characteristics of Muscle Tissue

• _________ or irritability the ability to
  receive and respond to stimuli
• _________ the ability to shorten forcibly
• __________ the ability to be stretched or
  extended
• __________ the ability to recoil and resume the
  original resting length

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Muscle Functions

• Skeletal muscles are responsible for all
  ___________
• ________ muscle is responsible for coursing the
  blood through the body
• ________ muscle helps maintain blood pressure,
  and squeezes or propels substances (i.e., food,
  feces) through organs
• Muscles also maintain ________, stabilize
  _______, and generate heat

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Quick Check

• 1. What are the 3 types of muscle tissue?

2. Muscles functions include maintaining
________, stabilizing _______, and generating
_______
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Skeletal Muscle

• Packaged in skeletal muscles that attach to and
  cover the bony _________
• Has obvious stripes called _________
• Is controlled _________ (i.e., by conscious
  control)
• Contracts ______ but tires _______
• Is responsible for overall body _________
• Is extremely adaptable and can exert forces
  ranging from a fraction of an ounce to over __
  pounds

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Skeletal Muscle cont pg 179

• Each muscle is a discrete ________ composed of
  muscle tissue, blood vessels, nerve fibers, and
  connective tissue
• The three connective tissue sheaths are
• ____mysium fine sheath of connective tissue
  composed of reticular fibers surrounding each
  muscle fiber
• _____mysium fibrous connective tissue that
  surrounds groups of muscle fibers called
  fascicles
• ____mysium an overcoat of dense regular
  connective tissue that surrounds the entire
  muscle

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Page 183 - Label your practice diagram with the 3
connective muscle sheaths (circles in red)plus
striations
Striations (stripes)
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Skeletal Muscle Attachments, pg 184
Most skeletal muscles span joints and are
attached to bone in at least two places.

• ______ - the point or mode of attachment of a
  skeletal muscle to bone or other body part that
  moves
• ________ - end of the muscle that is attached to
  a bone that does not move when the muscle
  contracts

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Muscle Attachment cont pg 184

• Additionally, muscles attach
• __________ to bone via connective tissue
  wrappings that extend beyond the muscle called
  ________.

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Quick Check

• 1. What are striations?

2. The name of the muscle sheath surrounding the
entire muscle?
3. Muscles attach to bone via ________?
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Smooth Muscle
- Composed of spindle-shaped fibers with no
_______________ - Have ________________ only
(not other connective sheath layers) - Found in
walls of hollow organs (except the heart) - Have
essentially the same contractile mechanisms as
skeletal muscle
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Cardiac Muscle

• Found in the walls of the _________
• Branching chains of cells with __________
• Endomysium is attached to the heart
• ___________ control

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Chap 9 Wrap-Up Practice

• List describe the 4 characteristics of
• muscle.
• 2. State the 3 basic functions of muscle. 
• 3. Explain the insertion and origin attachment
• points on a skeletal muscle (you may want to
  draw to
• reinforce your response).
• 4. Compare and contrast the 3 types of muscle
  tissue (include whether they are striated or
  non-striated, voluntary or non-voluntary, and
  whether they have connective muscle sheaths or
  not).