The shortening velocity of a skeletal muscle fiber increases with decreasing load because the rate at which the cross-bridge cycle can occur increases with decreasing load
Indicate whether the statement is true or false.
TRUE
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Which property of diffusion best helps explain the necessity of the circulatory system in multicellular organisms?
A) Diffusion rate is inversely related to molecule size. B) Diffusion is rapid over short distances but much slower over long distances. C) Molecules move from an area of higher concentration to an area of lower concentration. D) Diffusion can take place in an open system or across a partition that separates two systems.
Aspirin and other nonsteroidal anti-inflammatory drugs are more specific in their effects on eicosanoid synthesis than are steroidal anti-inflammatory drugs
Indicate whether the statement is true or false.
This figure shows the knee joint. Which number indicates the tibial collateral ligament?
A. 1 B. 2 C. 3 D. 5 E. 6
B-lymphocytes are categorized as part of the adaptive branch of the immune system for all of the following reason but one. Which of the following is not one of the reasons B-lymphocytes are considered part of the adaptive immunity?
A) Their receptors will bind to only one antigen. B) They are a first line of defense that can begin killing pathogens immediately. C) They require costimulation from an activated T-helper cell. D) They produce memory cells when activated.