An athlete’s first sign of dehydration is typically ______
a. fatigue.
b. dizziness.
c. intense thirst.
d. intense sweating.
e. mental confusion.
Answer: A
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The distinctive spiral shape of a protein is known as its ________ structure
A) secondary B) primary C) quaternary D) tertiary
Older adults may be at risk for dehydration because:
a. fluid needs increase with age. b. they absorb less fluid from their intestines. c. they lose more water through their lungs and skin. d. their thirst mechanism is diminished.
Estrella practiced sprints, running at high intensity for 30 seconds and cooling down 1 to 2 minutes in between. The fuel that was mostly used to generate ATP during her sprints was:
A. fatty acids B. creatine phosphate C. pyruvate D. glucose
Which of the following statements best describes mean arterial pressure (MAP)?
A. It represents the amount of end diastolic volume that is ejected from the heart by contraction of the left ventricle. B. It represents the force exerted by the blood on the walls of blood vessels during the contraction of the ventricles. C. It represents the resistance against which the ventricles must contract in order to eject blood into systemic circulation. D. It represents the depolarization of the AV node that is carried into the ventricles by the atrioventricular bundle. E. It represents the volume of blood ejected with each contraction of the left ventricle.