sci questions pg 543

4b.) how are the structures of arteries, capillaries, an veins similar?

arteries are thick walled, because they carry blood with high pressure, so that the walls may not collapse.

3a.) where does blood returning from the body enter the heart?

blood enters the heart through two large veins: the superior vena cava and the inferior venacava.

2c.) what would happen if the value between the right atrium an the right ventricle did not work properly?

most patients with the heart valve problems will need careful follow-up and potentially valve replacement in their fifth or sixth decade of life. if watched carefully not a problem.

2a.) what function does the heart perform?

pumps blood through our bodies, to make sure alive!

3b.) where does the blood go next?

the blood goes to the pulmonary artery an then goes into the lungs.

1a.) what does the cardiovascular system consist of?

the cardiovascular system consists of the heart, blood vessels, arteries, veins, capillaries, an the blood. the heart is made up of muscle, which contracts to thrust blood into the blood vessels and around the body.

1b.) what three functions does the cardiovascular system perform?

the cardiovascular system provides cells with oxygen, provides nutrients, an collects wastes.

2b.) what are the 4 chambers of the heart? what structures separate one chamber from another?

the four chambers of the heart are made up of 2 atria and 2 ventricles.

4a.) what roles do arteries, capillaries, and veins play in the cardiovascular system?

these serve in transporting blood between heart, organs, and muscles. arteries usually leave the heart and transport blood to the body or to the lungs.