Would you expect the muscle fibers of the tongue to be striated or smooth? What about the muscle of the diaphragm? Explain your answer.
Since this is not my area of expertise, I searched Google under the key words "striated smooth muscle" to get these possible sources:
http://www.google.com/search?client=safari&rls=en&q=striated+smooth+muscle&ie=UTF-8&oe=UTF-8
In the future and with your other posts, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
The muscle fibers of the tongue are striated, while the muscle of the diaphragm is also striated.
To determine why the muscle fibers of the tongue are striated, we can start by understanding the concept of striated muscle. Striated muscles are characterized by their striped or banded appearance, which is due to the arrangement of specialized contractile units called sarcomeres within the muscle fibers. These sarcomeres contain overlapping thick and thin filaments, namely myosin and actin, which facilitate muscle contraction.
Now, to see why the muscle fibers of the tongue are striated, we can observe the function and nature of the tongue. The tongue is primarily involved in actions such as taste perception, swallowing, manipulation of food, and speech. These activities require precise and coordinated movements, which are achieved through the contraction and relaxation of muscle fibers. Striated muscles, such as those in the tongue, provide the necessary control and fine-tuning of movement due to the organized arrangement of sarcomeres.
Moving on to the muscle of the diaphragm, it is also composed of striated muscle fibers. The diaphragm is a thin, dome-shaped muscle located below the lungs and separating the thoracic cavity from the abdominal cavity. Its primary function is to contract and relax to facilitate the process of breathing by expanding and contracting the thoracic cavity.
Striated muscle fibers in the diaphragm are beneficial for this important respiratory function. The diaphragm needs to contract rhythmically and in a controlled manner to allow for efficient inhalation and exhalation. Similar to the tongue, the striated muscle fibers in the diaphragm provide the necessary strength, control, and coordination required for its function.
Therefore, both the muscle fibers of the tongue and the diaphragm are striated due to the need for precise and controlled movements in their respective functions.