A & P study guide

A & P study guide - MUSCLES Describe Three Types of...

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MUSCLES Describe Three Types of Muscles 1. _______________________ a. What does it move? b. What part of nervous system is contraction controlled by? 2. _______________________ a. What does it move? b. What part of nervous system is contraction controlled by? 3. _______________________ a. What does it move? b. What part of nervous system is contraction controlled by? SKELTAL MUSCLES What is a Muscle Fiber ? Define Myoblasts What do they eventually form? What are satellite cells and what is their function? 1
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Define the following layers of the muscle: Endomysium Perimysium What is a fascicle ? Epimysium something to remember: all three of these layers are made of connective tissue which is continuous with the tendons which then connect to the bones Define: Origin of muscle: Insertion of muscle: Synergistic muscles : Antagonistic muscles : Tendon : 2
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Morphology of Fibers As you know, muscle fibers are long, multinucleated cells, so naturally they contain all of the normal cell structures…they are just called slightly different names specific to muscles Define: 1. sarcoplasm : 2. sarcolemma : 3. sarcoplasmic reticulum : 4. transverse tubules : 5. myofibrils: Composed of: Microfilaments : two types: Thick filaments: Main protein: ___________ Thin filaments : Main protein: ___________ Sarcomere : What gives striated (striped) appearance? Explain what each structure of the Sarcomere is composed of and then draw a rough sketch and label the parts. 1. A Band : 3
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a) H zone : b) M-line : 2. I Band : z - line : Show all of these structures below: helpful hint…if you know how to draw this picture yourself, you can draw it on the test and it can help you to answer questions Actin : Myosin : Each head contains: a) b) Four step cycle: How does a sarcomere shorten? The best thing to do in this situation is to draw your own picture very similar to the one in the text…you know…the one with the myosin head, actin filaments, and the atp…and just memorize how to draw it on your own. This way you know exactly what happens when ATP is bound or when it is not, etc. When you get to 4
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the test you can draw it and it will be easier to answer the questions about it. Remember… nothing fancy…just something that can give you a visual of what is
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A & P study guide - MUSCLES Describe Three Types of...

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