What is the function of the lumbar curvature?
What will be an ideal response
It positions the weight of the trunk over the body's center of gravity, thus providing optimal balance when standing.
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What are the only two places in the entire circulatory system at which gas exchange can take place?
a. pulmonary and cardiac capillaries b. pulmonary and the systemic capillaries c. bronchioles and alveoli d. arterial and venous capillaries e. arteries and veins
In the body's lever systems, the fulcrums are represented by the
a. joints b. long bones c. tendons d. short bones e. skeletal muscles
Which of the following is true about osmosis?
A) Osmosis occurs when the concentration of water is the same as the concentration of solutes. B) Osmosis is the flow of water across a plasma membrane. C) Water may move up or down a concentration gradient during osmosis. D) Solutes always accompany the movement of water during osmosis.
Both male and female sex hormones are produced by the adrenal medulla throughout life in relatively small amounts
Indicate whether the statement is true or false