how the heart pumps blood, gas exchange, alveoli, the blood capillaries, veins, arteries Flashcards
(35 cards)
What is the primary function of the heart?
To pump blood throughout the body.
True or False: The heart has four chambers.
True.
Fill in the blank: The right atrium receives ______ blood from the body.
deoxygenated
What are the two main types of blood vessels?
Arteries and veins.
Which chamber of the heart pumps oxygenated blood to the body?
Left ventricle.
What is the role of alveoli in the respiratory system?
Gas exchange.
True or False: Veins carry blood away from the heart.
False.
What type of blood do arteries typically carry?
Oxygenated blood.
Fill in the blank: The ______ are tiny air sacs in the lungs where gas exchange occurs.
alveoli
What is the main gas exchanged in the alveoli?
Oxygen.
What is the function of capillaries?
To facilitate the exchange of gases, nutrients, and waste between blood and tissues.
True or False: The left atrium receives oxygenated blood from the lungs.
True.
What is the largest artery in the body?
Aorta.
What is the primary role of veins?
To carry deoxygenated blood back to the heart.
Fill in the blank: Blood enters the heart through the ______ and ______ atria.
right, left
What is the name of the valve between the left atrium and left ventricle?
Mitral valve.
Which blood vessel has the thinnest walls?
Capillaries.
True or False: The pulmonary arteries carry deoxygenated blood.
True.
What is the process by which oxygen and carbon dioxide are exchanged in the alveoli called?
Diffusion.
Fill in the blank: Blood pressure is highest in the ______.
arteries.
What structure prevents backflow of blood in the heart?
Valves.
Which type of blood vessel is primarily responsible for nutrient absorption?
Capillaries.
True or False: Arteries have thicker walls than veins.
True.
What is the role of the right ventricle?
To pump deoxygenated blood to the lungs.
