Materials that are to be discharged from a cell via exocytosis are packaged by which organelle?
A. Mitochondrion
B. Ribosome
C. Endoplasmic reticulum
D. Lysosome
E. Golgi complex
Answer: E
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Which of the following statements concerning the capillaries is FALSE?
A. It is possible for a capillary to filter fluid at its arterial end and absorb fluid at its venous end. B. Increasing capillary hydrostatic pressure decreases the likelihood that filtration will occur. C. Velocity of blood flow is slower in the capillaries than in the arteries. D. Large capillary pores are more likely to be found in liver capillaries than in brain capillaries. E. Large proteins that escape capillaries and enter the interstitial fluid are returned to the circulation via the lymphatic system.
Since many muscles are named for their location (origin and insertion), the zygomaticus muscles probably originate on the ________ bone of the skull.
Fill in the blank(s) with the appropriate word(s).
The heart chamber that has the greatest work load is
a. the right ventricle b. the left ventricle c. the left atrium d. the right atrium e. both atria
The left and right coronary arteries
A. are interconnected with several high-volume anastomoses allowing for well-perfused alternate blood paths. B. are functional end arteries because the blockage of one of them leads to tissue death in the area it supplies.