AP Biology › Circulatory Anatomy
Larger arteries have less smooth muscle per volume when compared to smaller arteries (also called arterioles). What would you expect as a result of this distinction?
Which of the following statements about adult human heart anatomy are false?
Which of the following statements about adult human heart anatomy are false?
Which of the following vessels transports blood from the lungs to the heart?
Blood pumped out of the heart circulates the body and returns to the heart. Which vessel connects directly to the right atrium?
The heart pumps blood throughout the human body; however, it must pump at the right time and with the right amount of force. When the heart is not pumping efficiently and in a timely manner, the flow of blood becomes disrupted. One can think of the heart as the only traffic light in a busy intersection. When working properly, traffic flows smoothly. When is it not working properly, traffic becomes congested. Likewise, when the heart is weak, the blood leaving the heart towards the systemic circulation (e.g. brain, organs) becomes disrupted. The blood entering the heart from the lungs also gets congested because the heart is not able to pump fast enough and strong enough to get the blood in and out at the proper pace.
One of the most common causes of death for a patient with a weak heart is from pulmonary edema. Which of the following choices best explains how pulmonary edema may result from heart failure?
Blood pumped out of the heart circulates the body and returns to the heart. Which vessel connects directly to the right atrium?
Which blood vessels supply oxygen-rich blood to the heart?
Which blood vessels supply oxygen-rich blood to the heart?
Which of the following vessels would be expected to have the lowest blood pressure in the human systemic circulation?