24 Questions
What is the main function of the circulatory system?
Maintain homeostasis through transport functions
Which component is NOT included in the cardiovascular system (CVS)?
Skin
What does the heart primarily pump blood into?
Blood vessels
How does the circulatory system help in maintaining homeostasis?
By regulating blood flow to control body temperature
Which of the following is NOT a function of the circulatory system?
Digestion of food particles
What is one of the key roles of blood circulation in the body?
Transporting gases and waste products
What is the main function of the systemic circulation?
Transport O2 and nutrients to body tissues
What is the purpose of pulmonary circulation?
Gas exchange in the lungs
Which chamber of the heart pumps blood to the lungs?
Right ventricle
What is the function of the myocardium?
Help fill ventricles with blood through atrial contraction
Which chamber of the heart receives blood from the body through vena cava?
Right atrium
What is the function of the left atrial wall compared to the right atrial wall?
It's thinner than the right atrial wall
What is the main function of arteries?
Stretching to prevent a marked increase in pressure during systole
Which vessels contain a thick layer of smooth muscles in their wall?
Arterioles
What controls the diameter of arterioles?
The autonomic nervous system
Why are veins referred to as capacitance vessels?
Because they can accommodate a large volume of blood with little change in pressure
Which vessels act as a drainage system preventing fluid collection in interstitial tissue spaces?
Lymphatic vessels
What is the primary site of exchange between blood and surrounding tissue?
Capillaries
What is the function of atrio-ventricular valves (A-V valves)?
Separate the atria from the ventricles
What prevents the eversion of atrio-ventricular valves during ventricular systole?
Attachment of cusps to papillary muscles by chordae tendinea
Which part of the heart is formed of four rings of dense connective tissue?
Fibrous skeleton of the heart
How many cusps does the Mitral valve have?
2 cusps
Which valves allow the flow of blood from ventricles to major arteries?
Semilunar valves
Where are the ends of the cusps of A-V valves attached in the heart?
Papillary muscles by chordae tendinea
Test your knowledge on an overview of the cardiovascular system, including the general function, division (systemic & pulmonary circulation), components of CVS, physiological anatomy of the heart, and functional histology of the cardiovascular system.
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