Which of the following statements about thermoregulation is correct?
a. in a cold environment, the body will lose heat by conduction, convection, radiation, and evaporation.
b. in a hot environment when the temperature of the environment exceeds that of the skin surface, evaporation is the only means for the body to lose heat.
c. the temperature control centers in the hypothalamus receive afferent input from peripheral thermoreceptors in the skin and central thermoreceptors in the hypothalamus and internal organs.
d. both (b) and (c) above.
e. all of these answers.
E
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Which of the following statements is false or incorrect?
A) Cardiac muscle contracts when stimulated by its own autorhythmic muscle cells. B) Under normal resting conditions, cardiac muscle tissue contracts and relaxes about 75 times per minute. C) Cardiac muscle fibers depend mostly on anaerobic cellular respiration to generate ATP. D) Cardiac muscle fibers can use lactic acid to make ATP.
Ovulation usually occurs on or about day 14 of the uterine (menstrual) cycle
Indicate whether the statement is true or false
All of the following cardiac measurements will increase during exercise except ____________________
A. end-diastolic volume B. end-systolic volume C. stroke volume D. cardiac output
Eyes suddenly exposed to bright light experience:
A) photopupillary reflex B) convergence C) accommodation pupillary reflex D) hemianopia E) eyestrain