1) a tracing of the electrical activity of the heart, monitored by electrodes placed on the
skin, is called a(n) ________.
2) for a person suffering from ________, the focal point of the object is focused in front
of the retina leading to blurring of distant objects.
3) you are helping your dad prepare food in the kitchen. dad has a tablespoon of water
in one hand and a tablespoon of vegetable oil in the other, when he trips over the rug
and spills both spoons on the countertop. dad notices that the oil forms a thin film on
the countertop, whereas spilled water forms smaller, taller beads. how should you
explain the different behavior of these liquids to your dad?
4) describe differences in effects of hormones of growth and metabolism in children
compared to effects in adults.
5) urine is carried to the external environment by the ________.
6) explain how vision is affected by the loss of one eye. explain how hearing is affected
by the loss of one ear. in reality, how disadvantaged are people who are blind in one eye
or deaf in one ear? would loss of half the tongue or half the olfactory epithelium have
comparable effects on those systems? explain.
7)
figure 1.2
summarize the data shown in figure 1.2.
8) in a laboratory experiment, adding curare, which binds to acetylcholine receptors, to
the solution around a muscle decreases the size of the end-plate potential. adding
prostigmine, an acetylcholinesterase blocker, increases the size of the end-plate
potential. explain why.
9) the term that describes the need for one hormone to be present for a second hormone
to produce a full effect is called ________.
10) the duration of the action potential is ________ in contractile myocardium,
________ in autorhythmic contractile, and ________ in skeletal muscle.