Page 13 - Hayden-McNeil Coloring Activities

Skeletal muscle shapes
Sliding filament theory of muscle contraction
a Parallel
b Fusiform
c Circular
d Triangular
e Unipennate
f Bipennate
g Multipennate
a
Actin
(thin filament)
A band
b
Myosin
(thick filament)
c
Z line
a
g
e
c
ca c
a b
I band
A band
a caab
d
f
a aacbc
cdb
Skeletal muscle structure c c b a
a Transverse tubule bdccb
Sarcoplasmic reticulum c Myofibril
d Mitochondrion
e Sarcolemma (cell membrane)
h
c
Opening of transverse tubule to extracellular fluid
e b
e
Endomysium
e
Blood vessels
h g
Fascicle
g g
f
g Perimysium
h Epimysium
Skeletal muscle
Muscle fiber (cell)
f
f
c
b a aa
Sarcomeres relaxed
A band I band A band
aa baa
aab cbaa
aacbc aa
Sarcomeres contracted
b
a
Anatomy & Physiology Coloring Activity (Keyed)
a
Sarcomere
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