Reflection paper on cardiovascular system. Use content below
https://www.youtube.com/watch?time_continue=3&v=Y6U728AZnV0&feature=emb_title
https://www.youtube.com/watch?time_continue=3&v=GnpLm9fzYxU&feature=emb_title
https://www.youtube.com/watch?time_continue=7&v=fLonh7ZesKs&feature=emb_title