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Lecture 4

BPK 142 Lecture Notes - Lecture 4: High High, Biceps, Elastic Energy


Department
Biomedical Physio & Kines
Course Code
BPK 142
Professor
Mike Walsh
Lecture
4

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BPK 142 – INTRODUCTION TO KINESIOLOGY
SKELETAL MUSCLE - STRUCTURE AND FUNCTION


 Skeletal muscle !"
#$"
-%

-&"'$""! 
-(
-)*+,-"./-
-01-$/2-$"$"$
$
 Smooth muscle"
-3" 
-(
/ Cardiac muscle
-4!
-5"'
I. Overview of Skeletal Muscle
A. Criteria Used To Name Muscles
 Shape"$'$$
/ Acon67$7$$
+ Locaon$$#
. Divisions$8
1 Size relaons"7$"$"3
99$9"9"
, Direcon of #bers$"
B. Skeletal Muscle Shapes
-Fascicle:$$
o;"7""$ "
""""$
""
 Unipennate
/ Bipennate
+ Mulpennate"
. Longitudinal (strap)7$

1 Radiate" #
C. Muscle Acons
-8""
o;
<"
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 Prime mover)
/ Antagonist5#
+ Fixators/stabilizers='#"
II. Structure of Skeletal Muscle
A. Gross Anatomy
-Tendons>7
-5"$7
-=$
-:$"
-3
o"7"!
B. Connecve Tissue
-+endomysium$perimysium$
epimysium
o"
-7
o
o"
"?
C. Blood Supply
-227$
o+?.
o"""$"0
-8""
o==7$
"6
5*1?/2-76
*12-7
o:6$$""7
D. Microanatomy of Skeletal Muscle
->
o" 
"!@
oZ lineA"!
Tin )BC"
$"D
oSarcomere>
=?"!
oSarcoplasmic reculumA

oTropomyosin:!"
oTroponin:"
-Sliding #lament theory
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