Exercise 14 - Muscle Tissue

Exercise 14 - Muscle Tissue - and connective tissue...

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/. EXERCISE 14 – MUSCLE TISSUE OBJECTIVES 1. To describe the structure of skeletal muscle from gross to microscopic levels. 2. To define and explain the role of the following: Fiber Myofibril Myofilament Actin Myosin Aponeurosis Tendon Epimysium Perimysium Endomysium 3. To describe the structure of a neuromuscular junction and explain its function. 4. To differentiate the skeletal muscle from smooth and cardiac. NOTES: I. Connective tissue components: fascia tendon/aponeurosis epimysium perimysium endomysium II. General structures of a muscle cell (fiber): sarcolemma T-tubules sarcoplasmic reticulum (SR) with terminal cisternae myofilaments: thin vs. thick III. Sarcomere: A band - M line and H zone I band - Z disc ACTIVITY 1: SKELETAL MUSCLE ANATOMY (models) Examine the general structures of skeletal muscle: sarcolemma down to myofilaments;
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Unformatted text preview: and connective tissue components: tendon, aponeurosis, epimysium, perimysium, endomysium. ACTIVITY 2: MICROSCOPIC STRUCTURE OF MUSCLE TYPES Microscopic identification and differentiation: skeletal, cardiac, smooth muscle types • Skeletal muscle - striated, multinucleate • Cardiac muscle - striated, uninucleate with branchings and intercalated discs • Smooth muscle- non-striated, uninucleate, and spindle Examine the 3 types of muscle tissue in models as well as. ACTIVITY 3: NEUROMUSCULAR JUNCTION Examine NMJ structures in models and microscopic slide: • axonal terminal with Ach-containing synaptic vesicles • synaptic cleft • motor end plate with ACh receptors Richland College Biol. 2401 Marieb A&P Lab Manual - 9 th Edition...
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