Test Questions Exam 2

Test Questions Exam 2 - Knowledge 1. Skeletal muscle. .. a....

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Knowledge 1. Skeletal muscle. .. a. attaches to the skeleton (bone) b. produces a large amount of metabolism c. has multiple nuclei d. is striated: has light and dark bands of a similar texture e. all of the above 2. The Axial Muscles consist of the muscles in the: a. head, neck, and trunk b. head, neck, trunk, and limbs c. lower body d. head, neck, trunk, and lower body 3. A cross-bridge forms when: a. Sarcomere's lose calcium| b. Myosin and Actin interact c. The H-band is elongated d. Myosin and Actin seperate 4. What is Conductivity? a. stimulation produces electrical change b. the ability to shorten and produce tension c. conduction of electrical excitation (via muscle stimulation) along membrane initiating contraction d. The ability to enable the muscle to be stretched, and return to normal length 5. _________________ is/are excitible/irritable and allow for the transfer of messages from the outside of the cell into the cell. a. Sarcolema b. Actin c. Myofibrils d. Myosin Comprehension: 1.) If a person was weight training doing forearm curls(flexion phase), what muscles would be primary agonists? A.) Biceps Brachii/Brachialis B.) Triceps Brachii/Lateral Head C.) Biceps Brachii/Lateral Head D.) Triceps Brachii/Brachialis 2.) Which of the following is a property of skeletal muscle? A.) Extensibility
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B.) Contractility C.) Conductivity D.) Excitability E.) All of the Above 3.) What type of muscle fiber might be most advantageous for a track sprinter? A.) Type I B.) Type IIa C.) Type IIb 4.) A sustained muscle contraction from high frequency stimulation is an example of what type of muscle contraction? A.) Resting Potential B.) Excitation-Contraction Coupling C.) Tetanus D.) Twitch 5.) Which type of muscle action will cause the bicep to visibly shorten during forearm flexion? A.) Isometric B.) Concentric C.) Eccentric D.) A and B Analysis 1. Since one of the three main purposes of a joint is stability, how does our body make sure it can be maintained? a. Size of bones b. Muscular arrangements c. Tendons involved d. All of the above 2. The primer mover when the forearm is being flexed at the elbow are the bicep brachii and the brachialis, the tricep acts as what? a. agonist b. another prime mover c. antagonist d. assistant mover 3. Joints, which are an essential key to movement, do not demonstrate which of these characteristics? a. Weight Bearing b. Act as prime movers c. Stability-mobility tradeoff d. Shock absorption Application
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2. If a doctor wanted to cut your deltoid open to see how many fibers it contained, what method would be used (hint: the deltoid has a penniform fiber organization) a. anatomical cross section b. vertical cross section c. physiological cross section d. either one it does not matter 3. How does an anatomical cross section vary from a physiological cross section? a. With anatomical cross sections, in the pennate sections, you will only see a certain percentage of the fibers b. With physiological cross sections in the pennate sections, you will only see a certain percentage of the fibers c. anatomical cross sections cut close to the bone and find all of the fibers at an angle d. physiological cross sections cut through the thickest part of the body and finds all of the fibers at an
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This note was uploaded on 12/01/2011 for the course KNH 244 taught by Professor Smith during the Spring '07 term at Miami University.

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Test Questions Exam 2 - Knowledge 1. Skeletal muscle. .. a....

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