With reference to the effort and load, describe the main difference between a lever operating with a mechanical advantage versus a lever operating at a mechanical disadvantage
What will be an ideal response
A lever operates at a mechanical advantage when a smaller effort can move a heavier load. The effort moves a greater distance at a faster rate than the load. A lever operates at a mechanical disadvantage when a larger effort moves a lighter load. The effort moves more slowly and for a shorter distance than the load.
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The Fowler's position is the best position for patients having trouble breathing
Indicate whether the statement is true or false.
A somatic spinal reflex that involves one effector muscle being stimulated while the opposing muscle is inhibited is called _____ innervation
a) reversal b) relaxed c) representative d) reciprocal e) relegated
A normal sperm count ranges from ________ spermatozoa per milliliter.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. The juxtaglomerular apparatus secretes a hormone when blood pressure is low. 2. The juxtaglomerular apparatus secretes a hormone that causes dilation of blood vessels. 3. Filtration and secretion occur in different parts of the nephron. 4. Filtration and secretion in the nephron move solutes in opposite directions. 5. Secretion usually occurs in the distal convoluted tubule and the collecting tubule.