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Chapter 10-Anatomy And Physiology From Science to Life, 2nd Edition
Complete Chapter Questions With Answers
Sample Questions Are Posted Below
| 1. | The different types of muscle tissue differ from each other by: | |
| A) | Microscopic anatomy | |
| B) | Location | |
| C) | Type of Control | |
| D) | Both microscopic anatomy and location | |
| E) | All of the above | |
| Ans: E Difficulty: medium | ||
| 2. | Which of the following is NOT a major function of muscle tissue? | |
| A) | Moving blood throughout the body | |
| B) | Generating heat through contractions | |
| C) | Stabilizing joints | |
| D) | Promoting movement of body structures | |
| E) | Storing energy | |
| Ans: E Difficulty: medium | ||
| 3. | Acetylcholine is broken down relatively quickly, and is done so by an enzyme called Acetylcholinesterase. |
| Ans: True Difficulty: medium |
| 4. | This is the property of muscle that gives it the ability to stretch without damage. | |||
| A) | Electrical excitability | D) | Elasticity | |
| B) | Contractility | E) | Thermogenicity | |
| C) | Extensibility | |||
| Ans: C Difficulty: easy | ||||
| 5. | What is occurring during this period of a muscle twitch contraction? | |
| A) | The muscle action potential sweeps along the sarcolemma and calcium ions are released from the sarcoplasmic reticulum. | |
| B) | Ach binds to the ligand gated channels at the motor end plates. | |
| C) | The level of Ca2+ in the sarcoplasm decreases, because it is being actively transported back into the sarcoplasmic reticulum. | |
| D) | Calcium ions bind to Troponin. | |
| E) | Power strokes generate contractile force. | |
| Ans: C Difficulty: hard | ||
| 6. | In an isometric contraction the muscle develops tension but does not | |||
| A) | Lengthen | D) | Conduct electrical current | |
| B) | Widen | E) | Exhibit elasticity | |
| C) | Shorten | |||
| Ans: C Difficulty: medium | ||||
| 7. | Which one of these statements is FALSE? | |
| A) | The force of a muscle contraction increases as more motor units are activated. | |
| B) | Concentric isotonic contractions occur when the load equals or exceeds the tension produced in the muscle. | |
| C) | Recruitment is the process in which the number of motor units stimulated during a contraction is increased. | |
| D) | When a second stimulus occurs before the muscle has relaxed, wave summation occurs and the second contraction generates more force than the first contraction. | |
| E) | A motor unit is a motor neuron and all of the myofibers it innervates. | |
| Ans: B Difficulty: medium | ||
| 8. | What is occurring during this period of a muscle twitch contraction? | |
| A) | The muscle action potential sweeps along the sarcolemma and calcium ions are released from the sarcoplasmic reticulum. | |
| B) | Crossbridge attachments form, and repetitive power strokes occur. | |
| C) | The level of Ca2+ in the sarcoplasm decreases, because it is being actively transported back into the sarcoplasmic reticulum and bound to calsequestrin. | |
| D) | The muscle fiber relaxes as myosin heads detach from the actin filaments. | |
| E) | Acetylcholinesterase is preventing the ligand gated channels at the motor end plate from binding to ACh. | |
| Ans: A Difficulty: hard | ||
| 9. | Which of the following statements is TRUE regarding Fast Glycolytic fibers found in skeletal muscle? | |
| A) | They are small in diameter. | |
| B) | They are adapted for intense bursts of anaerobically fueled movement. | |
| C) | They have abundant mitochondria. | |
| D) | They contract slowly, but are resistant to fatigue. | |
| E) | They contain vast quantities of myoglobin. | |
| Ans: B Difficulty: medium | ||
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Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.