Teratogens are most damaging to organ systems if exposure to them occurs
A. early in pre-embryonic development.
B. when the organ systems are undergoing peak development in the embryo.
C. in the fetal period, after systems have formed but have not completed maturation.
B
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A patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes except ________.
A) increased work of the left ventricle B) increased incidence of coronary artery disease C) increased damage to blood vessel endothelium D) decreased size of the heart muscle
Which type of tissue covers surfaces and lines cavities?
A. Muscle B. Connective C. Epithelial D. Connective and muscle
The strongest muscle contractions are normally achieved by ________.
A) increasing stimulus above the threshold B) increasing stimulus above the treppe stimulus C) increasing the stimulation up to the maximal stimulus D) recruiting small and medium muscle fibers
A ration is divided into a 24 hours time frame
Indicate whether the statement is true or false