The Outer Layer of the Heart Is the _______

Q7: The left ventricle pumps oxygen-rich blood into

Q8: Fill in the correct labels for the

Q9: Fill in the correct labels for the

Q10: A small muscular pouch called the _

Q11: The sequence of blood flow through

Q13: The second heart sound _.<br>A) marks the

Q14: Each heartbeat is initiated by the _,

Q15: Fill in the correct labels for the

Q16: The valve between the left ventricle and

Q17: The innermost layer of the heart, the