As a lever produces more force, it also produces a greater speed and distance.
Answer the following statement true (T) or false (F)
False
The function of a lever is to produce a gain in the speed, distance, or force of a motion-either to exert more force against a resisting object than the force applied to the lever (for example, in moving a heavy object with a crowbar) or to move the resisting object farther or faster than the effort arm is moved (as in rowing a boat). A single lever can't confer both advantages. There is a trade-off between force on one hand and speed or distance on the other-as one increases, the other decreases.
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The first event in inspiration is
A. lung inflation. B. atmospheric pressure forces air into the respiratory tract. C. the diaphragm moves downward and the external intercostal muscles contract. D. decreased intra-alveolar pressure.
Systolic blood pressure is recorded
A. in arteries and is the minimum pressure that is recorded during ventricular relaxation. B. in arteries and is the maximal pressure that is recorded during ventricular contraction. C. in veins and is the maximal pressure recorded during atrial contraction. D. in veins and is the minimum pressure recorded during atrial relaxation. E. in both arteries and veins and is the maximum pressure recorded during diastole of the heart.
Which of the following is not associated with the renal corpuscle?
A) a podocyte B) a vasa recta C) a fenestrated capillary D) an efferent arteriole
The trigone is
A) a muscle layer that surrounds each kidney. B) a region where the glomerulus meets the glomerular capsule. C) a triangular area on the floor of the urinary bladder. D) a group of three neighboring nephrons in a kidney.