Which of the following accurately describes an effect of smoking?
a. smoking lowers blood pressure.
b. smoking enables hemoglobin to carry more oxygen.
c. smoking damages cilia in the trachea and more particles enter the lungs.
d. smoking decreases heart rate.

Developing a positive identity to increase your level of self esteem true or false

Which type of rehabilitative care would most likely use strength-training equipment?

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.