The heart is an essential organ in the human body, and it is made up of several parts. The crossword solutions for the term 'heart parts' are AORTAE (6 letters), VALVES (6 letters), ATRIA (5 letters), VENAE (5 letters), and AORTAS (6 letters). Aortae are the two main arteries that carry oxygen-rich blood away from the heart. Valves are structures that regulate the flow of blood between the chambers of the heart. Atria are the two upper chambers of the heart that receive blood from the veins. Venae are the two main veins that carry oxygen-poor blood back to the heart. Aortas are the two main arteries that carry oxygen-rich blood away from the heart.