Lab Exam 2 2007 - NAME LAB INSTRUCTOR LAB TIME SPRING 2007...

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NAME: LAB INSTRUCTOR: LAB TIME: LAB MIDTERM #2 B 120 pts TOTAL SPRING 2007 I. MULTIPLE CHOICE (2 pts each) (30 points) 1. Increasing the load on a muscle results in increased EMG amplitude. A) True B) False 2. The receptor forms a calcium channel in the T-tubule of skeletal muscle fibers. A) DHP B) dihydropyridine C) ryanodine D) junctional E) ACh 3. Muscle fatigue is a decrease in muscle tension due to previous contractile activity. A) True B) False 4. The strength of contraction of a muscle fiber can be increased by decreasing the frequency of stimuli. A) True B) False 5. Blood pressure measured at the foot would be blood pressure measured at the forearm. A) the same as B) greater than C) less than 6. After exercise the increased heart rate can be attributed to an increased T-P interval in the ECG trace. A) True B) False 7. Blood flow from the right ventricle enters directly into the . A) right pulmonary artery B) left pulmonary artery C) pulmonary trunk D) aorta E) C and D 8. The production of RBC occurs in the . A) liver B) bone marrow C) thyroid D) kidney E) none of
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