2. Cardiovascular system Flashcards
What is the main function of the cardiovascular system?
To transport oxygen, nutrients, hormones, and waste products throughout the body.
True or False: The heart is a muscle that pumps blood through the body.
True
What are the two main types of circulation in the cardiovascular system?
Pulmonary circulation and systemic circulation.
Fill in the blank: The _____ carries oxygenated blood from the heart to the body.
aorta
What are the four chambers of the heart?
Left atrium, left ventricle, right atrium, right ventricle.
Multiple choice: Which vessel carries deoxygenated blood back to the heart? A) Aorta B) Pulmonary artery C) Pulmonary vein D) Coronary artery
B) Pulmonary artery
What is the role of red blood cells in the cardiovascular system?
To transport oxygen from the lungs to the body’s tissues.
True or False: Veins have thicker walls than arteries.
False
What is blood pressure?
The force exerted by circulating blood on the walls of blood vessels.
Fill in the blank: The _____ is responsible for the heart’s electrical activity.
sinoatrial node (SA node)
Multiple choice: Which of the following is NOT a component of blood? A) Plasma B) Platelets C) Neurons D) Red blood cells
C) Neurons
What is the difference between arteries and veins?
Arteries carry blood away from the heart, while veins carry blood back to the heart.
True or False: The left ventricle pumps blood to the lungs.
False
What is the significance of the coronary arteries?
They supply blood to the heart muscle itself.
Fill in the blank: The average resting heart rate for adults is typically between _____ beats per minute.
60 and 100
