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Week 6
Phys quiz articulation and muscle contraction
| Question | Answer |
|---|---|
| Which type of muscle is responsible for peristalsis? | single unit smooth |
| Stretching the foot down and back and pointing the toe is called: | plantar flexion |
| A gliding joint is an example of a(n) _____ joint. | multi axial |
| The protein molecule that has heads jutting out for cross-bridging is: | myosin |
| What are the most movable joints in the body? | synovial |
| The lactate produced by anaerobic respiration is converted back to glucose in the: | liver-lactic acid cycle |
| The purpose of creatine phosphate in muscle contraction is to: | replenish energy supply |
| Which of the following is not a part of the neuromuscular junction? | t tubules, |
| Which joint allows for the widest range of movement? | ball and socket |
| Which type of muscle does not have T-tubules? | smooth |
| During which phase of the twitch contraction is there a triggering of the release of calcium ions into the sarcoplasm? | latent |
| The opposite of dorsiflexion is: | plantar flexion |
| The first event to occur in muscle relaxation is that: | sarcoplasmic reticulum pumps calcium back into sacs |
| In the structure called a triad, the T-tubule is sandwiched between: | sacs of sarcoplasmic reticulim |
| After it is released from the sarcoplasmic reticulum, the calcium combines with which protein? | troponin |
| The ability of muscle cells to respond to nerve stimuli is called: | irritability |
| Which structure functions to temporarily store calcium ions? | sarcoplasmic reticulum |
| Thick myofilaments extend the length of the: | A band |
| The knee joint is an example of a _____ joint. | hinge |
| Which of the following statements is incorrect about motor units? | The more muscle fibers stimulated by a motor neuron, the more precise the movements of that muscle can be. |
| Muscle contractions will continue as long as: | Calcium ions are connected to troponin |
| Endurance training is also known as: | aerobic |
| All of the following are noninflammatory joint disorders except: | dislocation |
| Which of the following statements about cardiac muscle is incorrect? | Cardiac muscle requires nervous stimulation to contract. **self exciting |
| An example of a pivot joint is(are) the: | head of the radius articulating with the ulna. |
| Moving a body part away from the medial plane of the body is called: | abduction |
| A condyloid joint is an example of a(n) _____ joint. | biaxial |
| Which of the following is not an end-product of the breakdown of ATP? | An inorganic phosphate Energy that can be used in muscle contraction ADP |
| White fibers are also called _____ fibers. | fast |
| All of the following are true characteristics of an isometric contraction except: | movement is produced |
| All of the following are noninflammatory joint disorders except: | juvenile rheumatoid arthritis. |
| All of the following are characteristics of smooth muscle except: | thin and thick filaments are aligned in sarcomeres like skeletal muscles. |
| The type of movement that occurs when the head is dropped to the shoulder, then to the chest, to the other shoulder, and toward the back is: | cirmumduction |
| Aerobic respiration: | produces the maximum amount of energy available from each glucose molecule. |