Which valves must be open for the ventricles to eject blood?Multiple choice question.Semilunar valvesAV valves

As the right ventricle ejects blood into the pulmonary trunk, the _____ valve prevents backflow of blood into the right atrium.Multiple choice question.aortic semilunarpulmonary semilunarleft AVright AV

Which of the following valves are located between the ventricles and arterial trunks?Multiple select question.Pulmonary semilunar valveRight AV valveAortic semilunar valveLeft AV valve

Valves help to ensure one-way blood flow in the __________Blank.Multiple Choiceheart and arteriesarteries and veinsheart and veinscapillaries

When the ventricles are contracting you would expect:Question 2Select one or more:a.Blood to be moving through the aorta and pulmonary trunk.b.The semilunar valves to be closed.c.Pressure in the ventricles to be lower than the pressure in the aorta and pulmonary trunk.d.The atria to be in diastole.e.The atrioventricular valves to be open.

The opening and closing of the heart valves is associated with ______.Multiple choice question.changes in blood oxygenationchanges in blood compositionchanges in chamber pressurestretch of tissue fibers in the pericardium