How do first-, second-, and third-class levers differ?
What will be an ideal response?
Levers differ in the position of their fulcrum in relation to the applied force and the load. A first-class lever has the fulcrum positioned between the applied force and the load. Second-class levers have the fulcrum at one end, adjacent to the load, with the applied force at the other end. Third-class levers have the fulcrum at one end, the load at the other, and the applied force in the middle.
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From which of the primary germ layers of the embryo does the epidermis of the skin develop?
a) Endoderm b) Ectoderm c) Mesoderm d) All of these choices are correct. e) Both endoderm and ectoderm.
Water and glucose are freely filtered through the filtration membrane of a renal corpuscle
Indicate whether this statement is true or false.
All of the following are true of lipids, except
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What is edema?
A. Decreased venous pressure B. A response to dehydration C. Hyperproteinemia D. Abnormal accumulation of extracellular fluid