________ are thin-walled and have large lumens.
A. Arteries
B. Veins
C. Capillaries
Answer: B
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Which of the following structures is the weakest portion of the femur, and is a common site of fracture in a "broken hip"?
A. Neck B. Greater trochanter C. Lesser trochanter D. Head E. Fovea capitis
Which of the following phrases would apply to cardiac muscle cells?
A. Possess special cell-to-cell contacts called intercalated discs B. Organized in parallel columns or bundles C. Contain actin but no myosin D. Multinucleated like skeletal muscle fibers E. Develop a significant oxygen deficit during systole
Which statement is not true concerning characteristics of life?
a. all body cells exhibit irritability to some extent b. growth can be an increase in size due to an increase in the number of cells c. Each organ system is isolated from all other body systems d. Reproduction occurs on both the cellular level and the oganismal level
The part of the cardiac output that passes through the kidneys is the
A. renal fraction. B. filtration fraction. C. clearance fraction. D. glomerular flow rate. E. cardiac fraction.