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The internal ridges of the atria are called pectinate muscles. They are muscular ridges that line the atrial walls, primarily located in the right atrium and the auricles of both atria. Pectinate muscles help increase the surface area of the atria and assist in the contraction of the atrial walls during the cardiac cycle.
What else can I help you with?
The internal wall surface of each ventricle displays large smooth irregular muscular ridges called?
pectinate muscles
What are the top two chambers of the heart called?
The Atria and Atrium
What are the ridges in cerebrum called?
The ridges in cerebrum are called
What are the thinned walled chambers in the heart called?
These are the atria - there are two in the heart.
What are Ridges in the cerebrum?
The ridges in cerebrum are called
The upper chambers of the heart are called what?
The left and right atrium (or atria).
What are the soft walled upper chambers of heart?
The upper chambers of the heart are called the atria (singular: atrium).
What is the top part of the heart called?
the bottom/point of the heart is called the apex
What do you call more than one atrium?
More than one atrium is called "atria." The term "atria" is the plural form of atrium.
What are the valves that prevent blood from flowing back into the atria called?
The valves that prevent blood from flowing back into the atria are called atrioventricular valves.
What are the superior chambers of the heart called?
atria.
What are superior heart chambers called?
atria
