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Why do muscle cells look the way they do?
Muscle cells have their unique elongated and striated appearance due to the arrangement of contractile proteins within them, specifically actin and myosin. This organization, along with the presence of specialized structures like sarcomeres, allows muscle cells to efficiently generate force and enable movement in the body.
What is located on the posterior side of the trachea and allows the esophagus to expand anteriorly during swallowing?
The trachealis muscle is located on the posterior side of the trachea and allows the esophagus to expand anteriorly during swallowing.
The lens of the eye thickens when the?
The lens of the eye thickens when the ciliary muscles contract. This change in thickness allows the eye to focus on objects up close by increasing the refractive power of the lens. This process is known as accommodation.
Muscle cells in oxygen deprivation convert pyruvate to?
Muscle cells in oxygen deprivation convert pyruvate to lactate through a process called anaerobic glycolysis. This allows for the generation of ATP in the absence of oxygen, but results in the build-up of lactate in the muscles, leading to muscle fatigue and soreness.
What is the organ in the human body that is made up of muscle?
The "heart", which is made up entirely of cardiac muscle.
