How can you find each of the four main blood vessel when dissecting a heart?

What body systems are involded in sleep homeostasis

What condition is most likely present when a normal p wave is negatively deflected?

Jessica said she would never work for less than $12 an hour, but then she got a job looking after children in the afternoon, and it pays only $6 an hour. now she says that money isn't as important as enjoying her work. this is an example of: apex