Hemorrhage with a large loss of blood causes ________
A) no change in blood pressure but a slower heart rate
B) a lowering of blood pressure due to change in cardiac output
C) no change in blood pressure but a change in respiration
D) a rise in blood pressure due to change in cardiac output
B
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Which bone does not contribute to the formation of the eye orbit?
A. The sphenoid bone B. The frontal bone C. The zygomatic bone D. The ethmoid bone E. The temporal bone
Which valve guards the base of the aorta and opens when the ventricles are contracting?
A) mitral valve B) aortic semilunar valve C) bicuspid valve D) pulmonary semilunar valve E) tricuspid valve
The principal hormone secreted by the corpus luteum, which prepares the uterus for pregnancy, is
A) LH. B) FSH. C) progesterone. D) estradiol. E) estrogen.
The dessert rat produces highly concentrated urine and excretes uric acid
Indicate whether the statement is true or false