STRUCTURES ASSOCIATED WITH A SKELETAL MUSCLE. Introductory Questions Where is skeletal muscle found...
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Transcript of STRUCTURES ASSOCIATED WITH A SKELETAL MUSCLE. Introductory Questions Where is skeletal muscle found...
STRUCTURES ASSOCIATED WITH A SKELETAL MUSCLE
Introductory Questions
Where is skeletal muscle found in your body?
Attached to bone.
(Smooth muscle lines organs, and cardiac muscle is found in the heart.)
What is the function of skeletal muscle?
Voluntary movement
Stability (posture)
Communication (facial expression, speech)
Control of body openings
Heat production- 85% of body heat is generated by muscles providing the proper environment for enzymes and therefore metabolism
Word Parts/Meanings
Fascia- band or bundle
Epi-upon
Peri- around
Endo- inner
Mys- muscle
Sarco-flesh
Lemma- husk
Structures of a skeletal muscle fiber
A Sarcomere
Twizzler analogy
Many packages of Twizzlers = Fascicle
Find a Fascicle on your diagram.
Twizzler analogy 2
1 package of
Twizzlers =
Muscle fiber
The packaging =
Sarcolemma
Twizzler analogy 3
1 bundle of twizzlers =
myofibril
Twizzler analogy 4
1 Twizzler strand =
Filament
Compare the Muscle Fiber to Pull and Peel Twizzlers
How amazing is that?