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Exercise XIV - Microscopic
Anatomy, Organization, and Classification of Skeletal Muscle
(pages 131-136)
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Objectives
- To describe the structure of
skeletal muscle from gross to microscopic
levels
- To describe the structure of a
neuromuscular junction and to explain its role in muscle
function
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The Cells of Skeletal Muscle (page
131)
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Term
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Description/Definition
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Myofibrils
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-
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Myofilaments
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-
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Actin
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-
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Myosin
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-
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Sarcomeres
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-
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Transverse Tubule
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-
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Terminal Cisternae
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-
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Sarcoplasmic Reticulum
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-
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Sliding Filament Theory
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-
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Z disc
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-
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H zone
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-
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I band
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-
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A band
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-
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Activity 1 -
Examining Skeletal Muslcel Cell Anatomy (page 133)
(notes)
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- Figure 14.1 (page 132) - Anatomy
of a skeletal muscle cell (fiber)
- Figure 14.2 (page 133) -
Relationship of the sarcoplasmic reticulum and T-tubules
to the myofibrils of skeletal muscle
- Figure 14.3 (page 134) - Muscle
fibers, longitudinal and transverse views
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Organization of Skeletal Muscle
Cells into Muscles (pages 135)
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Term
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Description/Definition
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Endomysium
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-
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Perimysium
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-
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Fasciculus
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-
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Epimysium
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-
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Tendons
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-
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Aponeuroses
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-
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Activity 2 -
Observing the structure of skeletal muscle tissue
(page 135) (notes)
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- Figure 14.4 (page 134) -
Connective tissue coverings of skeletal muscle
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The Neuromuscular Junction (page
135)
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Term
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Description/Definition
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Neuromuscular (myoneural) Junction
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Motor Unit
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-
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Synaptic Cleft
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-
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Acetylcholine (ACh)
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-
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Activity 3 - Studying
the structure of a neuromuscular junction (page
135) (notes)
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- Figure 14.5 (page 135) - The
neuromuscular junction
- Figure 14.6 (page 136) - A portion
of a motor unit
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