Question

Observe the presence of blood vessels attached to the heart.
• How many blood vessels are attached to the heart?
. Are all the blood vessels are rigid? How many of them are rigid?
. Do you think that the stiffness/rigidity of blood vessel is something
to do with circulation?
11. in which originate from the heart​

Answer 1

Answer:

there are 5types of blood vessels attached to the heart

Answer 2

Explanation:

1. 5 blood vessels are attached to heart . the superior and interior vena cava, the pulmonary artery,the pulmonary vein and aorta.

2. No, not all the blood vessels are rigid. Blood vessels like arteriosclerotic us a good example of the rigid blood vessels.

3.The stiffness of the blood vessels helps in the circulation of the blood and actually blood itself provide sometimes the rigidity to the vessels as the blood also puts pressure especially in the arteries.