Atrioventricular valves
Bicuspid Valve
Tricuspid valve
Pulmonary valve
Aortic valve
these are all the valves which are part of the heart.
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As in all mammals, horses have four valves in their hearts.
It really is lubb dupp and it is the sound of the 4 valves closing, two at a time. This occurs during one heart beat.
God (the cross) is in your heart, which sets you free (wings for freedom) while you are under the care of the King (the crown - usually crown of thorns)
It depends on who you ask. Different linguists will give different sets of answers to your question in general. Furthermore, not all languages make use of the same set of parts of speech. Some common ones are: pronoun, conjunction, adverb, noun, verb, determiner, adjective, preposition, interjection
A condition called cyanosis sets in when there is no oxygen in the blood, it is characterized by a blue tinge to the skin