What is the function of the anatomical structure indicated by the blue arrow in the image below?

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Options:
explanation: This is a dissection of the right ventricle of the heart (Orientation: The lingula of the left lung can be seen partially overlapping the heart, the apex of the heart if on the right side of the image and the right lung is on the left side of the image). The structures indicated by the arrow are the chordae tendinae within the right ventricle, whose function is to maintain the position of the tricuspid valve, as they are attached to the papillary muscles. The mitral valve is found between the left atrium and the left ventricle, so this answer is not correct, because the image shows a right view of the heart.
name: Maintains the position of the mitral valve by being attached to the papillary muscles in the left ventricle
label: b
answer: no
explanation: This is a dissection of the right ventricle of the heart (Orientation: The lingula of the left lung can be seen partially overlapping the heart, the apex of the heart if on the right side of the image and the right lung is on the left side of the image). This answer describes the function of the tricuspid valve, which allows blood to travel from the right atrium to the right ventricle. However, the structures indicated by the arrow are the chordae tendinae within the right ventricle, whose function is to maintain the position of the tricuspid valve, as they are attached to the papillary muscles.
name: Allows the passage of blood from the right atrium into the right ventricle
label: c
answer: no
explanation: This is a dissection of the right ventricle of the heart (Orientation: The lingula of the left lung can be seen partially overlapping the heart, the apex of the heart if on the right side of the image and the right lung is on the left side of the image). This answer describes the function of the pectinate muscles, which are located in the walls of the atria and increase their force of contraction. However, the structures indicated by the arrow are the chordae tendinae within the right ventricle, whose function is to maintain the position of the tricuspid valve, as they are attached to the papillary muscles.
name: Increase the force of contraction of the atria of the heart
label: d
answer: no
explanation: This is a dissection of the right ventricle of the heart (Orientation: The lingula of the left lung can be seen partially overlapping the heart, the apex of the heart if on the right side of the image and the right lung is on the left side of the image). This answer describes the function of the trabeculae carnae which are located within the walls of the ventricles and which contract to further increase the tension in the chordae tendinae to which the valve cusps attach. However, the structures indicated by the arrow are the chordae tendinae within the right ventricle, whose function is to maintain the position of the tricuspid valve, as they are attached to the papillary muscles.
name: Contract and further tense the attachments of the atrioventricular valves
label: e
answer: no
explanation: This is a dissection of the right ventricle of the heart (Orientation: The lingula of the left lung can be seen partially overlapping the heart, the apex of the heart is on the right side of the image and the right lung is on the left side of the image). The structures indicated by the arrow are the chordae tendinae within the right ventricle, whose function is to maintain the position of the tricuspid valve, as they are attached to the papillary muscles.
name: Maintains the position of the tricuspid valve
label: a
answer: yes

Correct answer: a