Biology, 07.12.2021 04:30 gshreya2005

Plz answer correctly i need the grade bad Describe the function of the pericardial sac around the heart. (2pts)
Describe how the blood vessels (arteries and veins) are adapted to transport blood. State at least three physical adaptations for their function. (3pts)
Why is one side of the heart larger in size. Explain. (1pt)
Explain the two types of blood circulation seen in humans. (2pts)

a. List the 4 chambers of the heart and b. list the valves found in the heart also. (4pts)

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