Identify the nutrient that kale and other leafy greens contain in significant amounts.

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.

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.

Which form of birth control good people use without altering hormonal systems are blocking sperm from fertilizing an egg