HBHD I Chapter 15 Circulation of the Blood

Front

What condition occurs if the foramen ovale fails to close?

Back

Ventricular septal defect (VSD) is a condition that occurs when the foramen ovale, a small opening between the atria of the heart, fails to close after birth, leading to abnormal blood flow between the heart chambers.

Front

Which layer of the blood vessel is thicker in arteries compared to veins?

Back

The tunica media is the layer of blood vessels that is thicker in arteries than in veins. It is composed of smooth muscle and elastic tissue, allowing arteries to withstand and regulate high blood pressure.

Front

What is the function of the venous valve in veins?

Back

The function of venous valves is to keep blood flowing in one direction toward the heart, preventing backflow and ensuring efficient circulation.

Front

What happens to blood pressure when there is a large amount of blood loss (hemorrhaging)?

Back

When there is a large amount of blood loss, blood pressure decreases due to reduced blood volume, which can lead to shock if not addressed.

Tags

NGSS.HS-LS1-3

Front

Which of the following blood vessels carries oxygenated blood from the lungs to the heart?

Back

The pulmonary vein carries oxygenated blood from the lungs to the heart, specifically from the lungs to the left atrium.

Front

What is the primary function of red blood cells?

Back

The primary function of red blood cells (erythrocytes) is to transport oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

Tags

NGSS.HS-LS1-3

Front

What is the role of the aorta in the circulatory system?

Back

The aorta is the largest artery in the body and its role is to carry oxygenated blood from the heart to the rest of the body.

Front

What is the significance of the coronary arteries?

Back

Coronary arteries supply blood to the heart muscle itself, providing it with the necessary oxygen and nutrients to function effectively.

Front

What is the difference between systemic and pulmonary circulation?

Back

Systemic circulation refers to the flow of blood from the heart to the rest of the body and back, while pulmonary circulation refers to the flow of blood from the heart to the lungs and back.

Front

What is hypertension and how does it affect the body?

Back

Hypertension, or high blood pressure, is a condition where the force of the blood against the artery walls is too high, which can lead to serious health issues such as heart disease and stroke.

Tags

NGSS.HS-LS1-3