Can anybody give me some information about Morphine? I need help with a few of these questions. 2. What does this drug do to the brain?
3. What are its short-term and long-term effects on the brain or mind?
4. What are its short-term and long-term effects on the body?

I’m are the types of asexual reproduction

What would be good in a cpr and first aid video

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.