Question

Body Fluids and Circulation: The inner surface of the ventricle is thrown into a series of irregular muscular ridges called ______?

• A. Chordae tendineae
• B. Columnae carneae
• C. Papillary muscles
• D. Endocardium

Hint:

Do not confuse columnae carneae with papillary muscles. Papillary muscles are connected to the valves, while columnae carneae are structural ridges.

Answer 1

The Correct Option is B

The columnae carneae are muscular ridges found on the inner surface of the ventricles. Their primary functions include:
Enhancing the strength and integrity of the ventricular walls.
Preventing the walls from sticking together during contraction.
Assisting the papillary muscles by anchoring the chordae tendineae, which in turn control valve movement.
These structures play a significant role in the efficient pumping of blood by the heart. ---
Final Answer: \[ \boxed{\text{Columnae carneae}} \]