Podcast
Questions and Answers
What prevents the eversion of the cusps of the A-V valves into the corresponding atria during ventricular contraction?
What prevents the eversion of the cusps of the A-V valves into the corresponding atria during ventricular contraction?
- Contraction of the semilunar valves
- Contraction of the ventricular muscles
- Contraction of the atrial muscles
- Contraction of the chordae tendineae (correct)
What separates the atrial and ventricular muscles in the heart?
What separates the atrial and ventricular muscles in the heart?
- Chordae tendineae
- Intercalated disks
- Papillary muscles
- Fibrous tissue (correct)
Which part of the heart is an electrical insulator, preventing action potentials from being conducted between atria and ventricles via tissue?
Which part of the heart is an electrical insulator, preventing action potentials from being conducted between atria and ventricles via tissue?
- Semilunar valves
- Papillary muscles
- Chordae tendineae
- Atrioventricular ring (correct)
What part of the heart forms the outlet valves from the ventricles, including the pulmonary valve and aortic valve?
What part of the heart forms the outlet valves from the ventricles, including the pulmonary valve and aortic valve?
Which structure allows blood flow only from the right ventricle to the pulmonary artery?
Which structure allows blood flow only from the right ventricle to the pulmonary artery?
What kind of system does the left ventricle and systemic arterial system constitute?
What kind of system does the left ventricle and systemic arterial system constitute?
What percentage of blood volume does the high-pressure system normally contain?
What percentage of blood volume does the high-pressure system normally contain?
What prevents action potentials from being conducted between atria and ventricles in the heart?
What prevents action potentials from being conducted between atria and ventricles in the heart?
What type of pockets are the cusps of semilunar valves referred to as?
What type of pockets are the cusps of semilunar valves referred to as?
