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Anatomy & Physiology (BIO 251) Week 1 Chapter 10 number

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Chamberlain College of Nursing

Anatomy & Physiology (BIO 251

Week 1 Chapter 10 number 12 Lab

Week 1, Chapter 10
12 Reviewing Your Knowledge
A. Skeletal Muscle Structure
Number the following nestled, cylindrical structures in
order from largest (1) to smallest (5).
__4___myofibril
__2___fascicle
__5___filaments
__3___muscle fiber
__1___muscle
B. Skeletal Muscle Structural Terms
Identify the structure that matches the description.
__Perimysium________ 1.Connective tissue covering
surrounding a fascicle
__Transverse (T) tubules 2.Finger-like invaginations of
plasma membrane; extend into interior of fiber and
surround myofibrils
__Sarcolemma________ 3.Plasma membrane of skeletal
muscle fiber
__Epimysium________ 4.Connective tissue covering
surrounding the muscle
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_Sarcomeres________ 5.Smallest contractile unit within
individual muscle fibers
_Sarcoplasmic reticulum__ 6.Stores calcium within
muscle fiber
_Endomysium______7.Connective tissue covering
surrounding individual muscle fibers
_Triad_________ 8.Two terminal cisternae and a T tubule
_Myofibrils_____ 9.Rod-like structures within skeletal
muscle fiber that contain thin and thick filaments
organized into sarcomeres

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Anatomy & Physiology (BIO 251) Week 1 Chapter 10 number 12 Lab

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