Question

a) Given below is the internal structure of human heart, Study the diagram and answer the
following questions :
I)Label the parts 1-6
ii)Which of the vessels labeled on the diagram carry oxygenated blood
iii)State the functions of structures labeled 1 and 6
iv)Name the blood vessel which supplies oxygenated blood to the muscles of the heart
v)
Define ventricular systole.​

Answer 1

Answer:

The right and left sides of the heart work together

Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. The pulmonary vein empties oxygen-rich blood, from the lungs into the left atrium.