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Answer: A. Cardiac and skeletal muscles are striated
D. Heart and digestive muscles are involuntary muscles
E. Smooth and skeletal muscles are involved in movement
F. Cardiac muscles work to pump blood
The descriptions regarding different muscle types that are true are the following:
- Cardiac and skeletal muscles are striated.
Striated muscle is those specialized muscle tissues that are part of the internal composition of the muscles of the extremities, trunk and heart.
According to the place in the body where the striated muscle tissue is located can be cardiac and skeletal muscles.
- Heart and digestive muscles are involuntary muscles.
The involuntary muscles move without our decision, that is, it does not depend on the subject, for example, the contraction of the heart and the contraction of the smooth muscles of the digestive tract occurs involuntarily.
- Smooth and skeletal muscles are involved in movement.
In the wall of tubular organs, the smooth muscles allow the execution of coordinated movements, these movements determine the transfer of the contents of these organs.
The skeletal muscles allow to maintain and regulate the posture of the body and generate movements.
- Cardiac muscles work to pump blood.
In organs such as the heart, the heart muscle forms a thick wall that, when contracted, raises the pressure of volumes of blood that are expelled intermittently.
This creates a pressure gradient that is essential for blood circulation.
Therefore, we can conclude that cardiac and skeletal muscles are striated, heart and digestive muscles are involuntary muscles, smooth and skeletal muscles are involved in movement and cardiac muscles work to pump blood.
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