17 Questions
What is the function of the heart?
Pumps blood to the body and receives blood from the lungs
Which type of tissue makes up the heart?
Cardiac muscle and connective tissue
What is the primary function of blood vessels?
Distribute blood throughout the body and exchange materials to/from the tissues
What is the cardiovascular system responsible for establishing?
Blood pressure needed to get blood flow out to the tissues
Which circulatory pathway describes the delivery of oxygenated blood from the left side of the heart to the body tissues?
Systemic circuit
What is the primary function of the atrio-ventricular valves in the heart?
To allow blood flow into ventricles
Which structure prevents the eversion (flipping backwards) of atrio-ventricular valves in the heart?
Chordae tendineae
What is the main function of the semi-lunar valves in the heart?
To allow blood to exit the heart during ventricular pumping
In which circulatory pathway does deoxygenated, high carbon dioxide blood return to the right side of the heart?
Pulmonary circuit
Which type of nervous system acts as the 'accelerator' for the heart?
Sympathetic nervous system
What is the function of the pacemaker action potentials in the heart's intrinsic conduction system?
To initiate heart contractions
Which cells are part of the intrinsic conduction system of the heart?
Pacemaker cells
What is the primary role of the chordae tendineae and papillary muscles in relation to heart valves?
To prevent eversion of atrio-ventricular valves
What is the function of semi-lunar valves in relation to blood flow in the heart?
To prevent backflow of blood
What is the main purpose of systemic circulation in the human body?
To deliver oxygenated blood from left side of heart to body tissues for metabolic functions
What is considered as one-way valve direction according to provided text?
When pressure is greater in front of the valve, it closes.
What type of nerves act as 'brakes' for regulating heart activity?
Parasympathetic nerves
Test your knowledge of cardiac physiology and the cardiovascular system, including heart anatomy, electrical activity of the heart, cardiac cycle, and cardiac output. Explore the functions of the heart as a double-sided pump, blood vessels as passageways for blood distribution, and the role of blood as a liquid connective tissue.
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