What anatomical structure of the heart produces the "lub" and "dub" sounds? what are korotkoff sounds? how are korotkoff sounds different from the "lub" "dub" sounds?  

What is the result of procrastination? a.having less time to work on tasks b.being able to plan your tasks more effectively c.having more energy to work on tasks d.getting tasks done promptly

Arah is eating lunch with friends outside in the commons area of her school. one of sarah’s friends offers to share a marijuana joint with her. what could be the outcome if sarah were caught smoking marijuana at school? nothing will happen because she did not buy the joint. she could be suspended from school. nothing will happen because she is underage. the consequences would be up to sarah’s parents.

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?