Question
Question 3 (1 point)
Special muscles inside the inner lower chambers that contract and help open and
close valves are called:
- chordae tendinae
- pectinate muscles
- papillary muscles
- auricular muscles
Special muscles inside the inner lower chambers that contract and help open and
close valves are called:
Ask by Mcdonald Chandler. in the United States
Mar 30,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The correct answer is 3) papillary muscles.
Solution
To determine the correct answer, let’s analyze the function of each muscle type listed:
These are fibrous cords that connect the papillary muscles to the heart valves, helping to keep the valves closed during contraction.
These are muscles found in the atria of the heart, helping to increase the power of contraction without significantly increasing heart mass.
These muscles are located in the ventricles and contract to pull on the chordae tendinae, helping to open and close the heart valves.
These muscles are associated with the auricles of the heart and are not primarily involved in opening and closing valves.
These are fibrous cords that connect the papillary muscles to the heart valves, helping to keep the valves closed during contraction.
These are muscles found in the atria of the heart, helping to increase the power of contraction without significantly increasing heart mass.
These muscles are located in the ventricles and contract to pull on the chordae tendinae, helping to open and close the heart valves.
These muscles are associated with the auricles of the heart and are not primarily involved in opening and closing valves.
Answered by UpStudy AI and reviewed by a Professional Tutor
Like
error msg
Explain 
Simplify this solution Extra Insights
The special muscles you’re looking for are the papillary muscles, which play a crucial role in the functioning of the heart. These muscles attach to the heart’s interior walls and connect to the heart valves via chordae tendinae, helping to ensure that the valves open and close correctly as the heart beats. This prevents the backflow of blood and helps maintain a one-way flow through the heart chambers.
If you’ve ever thought of the heart as a magical pump, imagine these papillary muscles as the diligent stage crew ensuring the valves (the performers) lift and drop at just the right moment! They’re responsible for making sure everything runs smoothly, keeping the rhythm of our favorite muscle - the heart!
