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Cardiac Physiology: Heart Anatomy and Function

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Cardiac Physiology: Heart Anatomy and Function

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Questions and Answers

What is the main function of the heart?

To regulate body temperature

To pump blood to the body and receive blood from the body (correct)

To filter waste from the blood

To produce red blood cells

Which type of tissue makes up the majority of the heart?

Bone tissue

Cardiac muscle (correct)

Nervous tissue

Adipose tissue

What is the role of blood vessels in the cardiovascular system?

Converting nutrients into energy

Production of white blood cells

Regulating hormone levels

Passageways for blood distribution and material exchange (correct)

What is the function of blood in the body?

Transporting dissolved and suspended materials Signup and view all the answers

What is the function of the pulmonary circuit?

To pick up oxygen and remove carbon dioxide from the blood Signup and view all the answers

Which pathway does deoxygenated blood take through the heart, starting from the right side?

Right ventricle to pulmonary trunk to pulmonary arteries Signup and view all the answers

What is the function of the atrio-ventricular valves in the heart?

To allow blood flow into ventricles when atrial pressure exceeds ventricular pressure Signup and view all the answers

What is the role of the semi-lunar valves in the heart?

To open during ventricular pumping to allow blood to exit the heart Signup and view all the answers

What is the function of chordae tendinae and papillary muscles in relation to heart valves?

To prevent valve eversion (flipping backwards) Signup and view all the answers

What type of nervous system acts as an 'accelerator' for the heart?

Sympathetic nervous system Signup and view all the answers

What is the main function of the intrinsic conduction system in the heart?

To initiate muscle action potentials in cardiac cells Signup and view all the answers

What is the function of the systemic circuit in the circulatory system?

To deliver oxygenated blood to body tissues Signup and view all the answers

What is the role of semi-lunar valves during ventricular relaxation?

They prevent backflow of blood during ventricular relaxation Signup and view all the answers

How many cusps does a bicuspid valve have?

Two cusps Signup and view all the answers

What is the role of autonomic innervation in cardiac muscle cells?

To control heart rate and rhythm Signup and view all the answers

What structures ensure one-way flow of blood through the heart?

Atrio-ventricular valves and semi-lunar valves Signup and view all the answers