Download Chap 9 Muscle Tissue Intro

Review lecture notes. Review Wrap-up practice questions.
Study diagrams discussed today.
Chap 9 Muscle Tissue
Intro, pgs 175 - 194
Learning Objectives:
1. Compare & contrast the basic types of muscle
tissue.
2. Describe the characteristics of
each muscle type.
3. Explain the effects of high intensity resistance
exercise on skeletal muscle.
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?
DISCUSSION, pg 176 - 177
Taken from Self-check, Question #1 pg 176
• What are the 3 types of muscle tissue?
• Where are they found?
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 ________
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
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
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
Quick Check
1. What are the 3 types of muscle tissue?
Muscles functions include maintaining
________, stabilizing _______, and generating
_______
2.
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
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
Page 183 Label your
practice
diagram with
the 3
connective
muscle
sheaths
(circles in red)
plus striations
Striations
(stripes)
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
Muscle Attachment cont… pg 184
Additionally, muscles attach:
– __________ to bone via connective tissue
wrappings that extend beyond the muscle
called ________.
Quick Check
1. What are striations?
2. The name of the muscle sheath surrounding the
entire muscle?
3. Muscles attach to bone via ________?
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
Cardiac Muscle
•
•
•
•
Found in the walls of the _________
Branching chains of cells with __________
Endomysium is attached to the heart
___________ control
Chap 9 Wrap-Up Practice
1. 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).