cardiovascular 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 is a muscular organ that pumps blood throughout the body.
True
Fill in the blank: The circulatory system consists of the heart, blood vessels, and _______.
blood
What are the two main types of circulation in the human body?
Pulmonary circulation and systemic circulation.
Multiple Choice: Which blood vessels carry oxygenated blood away from the heart?
Arteries
What is the role of veins in the circulatory system?
To carry deoxygenated blood back to the heart.
True or False: The aorta is the largest artery in the body.
True
Fill in the blank: The _______ valve prevents backflow of blood into the left atrium.
mitral
What is the function of capillaries in the circulatory system?
To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.
Multiple Choice: Which component of blood is primarily responsible for transporting oxygen?
Red blood cells
What is the term for the volume of blood pumped by the heart per minute?
Cardiac output
True or False: Blood pressure is the force exerted by circulating blood on the walls of blood vessels.
True
Fill in the blank: The _______ system works closely with the circulatory system to deliver oxygen to cells.
respiratory
What is the function of the pulmonary circuit?
To carry deoxygenated blood from the heart to the lungs for oxygenation.
Multiple Choice: Which hormone is primarily responsible for regulating blood pressure?
Angiotensin
What type of blood vessel has the thinnest walls?
Capillaries
True or False: The right side of the heart pumps blood to the lungs.
True
Fill in the blank: The _______ is the heart’s natural pacemaker.
sinoatrial node
What is the role of the coronary arteries?
To supply blood to the heart muscle itself.
Multiple Choice: Which condition is characterized by the narrowing of blood vessels?
Atherosclerosis
What is the primary function of platelets in the blood?
To aid in blood clotting.
True or False: The circulatory system is also known as the cardiovascular system.
True
Fill in the blank: The _______ is responsible for the rhythmic contractions of the heart.
myocardium
What type of circulation delivers oxygen-rich blood to the body?
Systemic circulation
