A cerebral embolism blocks an artery carrying blood to the ________
Fill in the blank(s) with correct word
brain
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Which of the following statements is false?
A. Shortening a muscle prior to contraction reduces the energy consumption of that muscle. B. Slower contraction velocities generate larger forces than more rapid contraction velocities. C. Lengthening contractions generate more force than shortening contractions. D. Isometric contractions occur when a muscle generates force without changing length. E. Rapid and repetitive stretching of a muscle can result in injury.
Some bacteria stain Gram-positive and others stain Gram-negative because of differences in the structure of their:
A) capsule. B) cell membrane. C) cell wall. D) ribosomes.
The sputum of a 75-year-old man with chronic lung infections yields the following: • Many gram-negative coccobacilli in Gram stain • X and V factors required for growth • Nonhemolytic on rabbit blood agar The organism can be identified as:
a. Haemophilus aegyptius. b. H. parainfluenzae. c. Haemophilus haemolyticus. d. H. influenzae.
What type of respiratory system is found in insects?
1.Countercurrent exchange 2.Internal gills 3.Lungs 4.Trachea