Circulatory System Flashcards
What is the primary function of the circulatory system?
To transport nutrients, gases, hormones, and waste products throughout the body.
True or False: The heart has four chambers.
True
Fill in the blank: The two upper chambers of the heart are called __________.
atria
What are the two main types of circulation in the circulatory system?
Pulmonary circulation and systemic circulation.
What type of blood vessel carries oxygenated blood away from the heart?
Arteries
Multiple Choice: Which of the following is NOT a component of blood? A) Red blood cells B) Plasma C) Neurons D) White blood cells
C) Neurons
What is the role of red blood cells?
To transport oxygen from the lungs to the body and carbon dioxide from the body back to the lungs.
True or False: Veins carry deoxygenated blood back to the heart.
True
Fill in the blank: The largest artery in the body is the __________.
aorta
What is the function of capillaries?
To allow the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.
Multiple Choice: Which part of the heart is responsible for pumping blood to the lungs? A) Left atrium B) Right ventricle C) Left ventricle D) Right atrium
B) Right ventricle
What is the function of valves in the heart?
To prevent the backflow of blood and ensure it flows in one direction.
True or False: The pulmonary arteries carry oxygenated blood.
False
Fill in the blank: The liquid component of blood is called __________.
plasma
What is the role of platelets in the blood?
To help with blood clotting.
Multiple Choice: Which type of blood vessel has thin walls and valves? A) Arteries B) Veins C) Capillaries D) None of the above
B) Veins
What is systemic circulation?
The circulation of blood from the heart to the rest of the body and back.
True or False: The heart is located in the left side of the chest.
False
Fill in the blank: The heart’s natural pacemaker is called the __________.
sinoatrial node
What does blood pressure measure?
The force of blood against the walls of the arteries.
Multiple Choice: What causes the heartbeat? A) Electrical signals B) Muscle contractions C) Both A and B D) None of the above
C) Both A and B
What are the two phases of the cardiac cycle?
Systole and diastole.
True or False: The coronary arteries supply blood to the heart muscle itself.
True
Fill in the blank: The main function of the lymphatic system is to __________.
help maintain fluid balance and support the immune system.
What is the role of the aorta in the circulatory system?
To carry oxygenated blood from the heart to the rest of the body.
Multiple Choice: Which type of blood cell is primarily involved in immune response? A) Red blood cells B) White blood cells C) Platelets D) Plasma
B) White blood cells
