What system have glands found throughout the body that release hormones into the bloodstream

I'ts the endocrine system

answer: my answer would be a) scheduling workouts with your friend for consistent days and time

explanation: for me personally i would be much more likely to go to the gym with a friend because i wouldn't want to cancel on them or stand them up.

answer; a database is an organized collection of data in digital format that users to keep track of information;