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What does the mitochondria do in muscle cell?
Mitochondria in muscle cells produce energy through a process called cellular respiration, generating ATP (adenosine triphosphate) that fuels muscle contractions. This energy production enables muscle cells to sustain prolonged contractions during physical activities.
A muscle changes length by either shortening or lengthening?
A muscle changes length through the processes of contraction and relaxation. During contraction, muscle fibers shorten, generating force and causing movement. Conversely, during relaxation, the muscle fibers lengthen back to their original state, allowing for the return to a resting position. This dynamic ability to change length is essential for various physical activities and functions.
What is the pathways of the blood?
the blood muscle
What pathways to regenerate ATP during muscle activity is the fastest?
anaerobic glycolysis and lactic acid formation
The first step toward generating a skeletal muscle contraction is The first step toward generating a skeletal muscle contraction is?
stimulation of the muscle by a nerve ending.
What is the primary source of energy for muscle during aerobic activities?
glucose
Why does exercise generate Hydrogen ions?
During exercise, muscles produce energy through various metabolic pathways, such as glycolysis and the citric acid cycle. These pathways generate adenosine triphosphate (ATP) for muscle contractions, resulting in the production of hydrogen ions as byproducts. This can lead to an increase in acidity in the muscle cells, contributing to muscle fatigue.
What is scientific word use when a muscle gets longer and get shorter?
The scientific terms for these processes are "eccentric contraction" and "concentric contraction." During eccentric contraction, a muscle lengthens while generating force, often when resisting an external load. Conversely, during concentric contraction, a muscle shortens while actively generating force, typically when lifting or moving a load. Together, these actions are essential for muscle function and movement.
During an isotonic contraction which point of attachment moves closer to the body?
During an isotonic contraction, the point of attachment that typically moves closer to the body is the insertion of the muscle. This occurs as the muscle shortens while generating tension, allowing the bone to which it is attached to move towards the origin. In this way, isotonic contractions facilitate joint movement and are essential for activities like lifting and walking.
During isometric contraction the energy used appears as movement?
During isometric contraction, no movement occurs, as the muscle is generating force without changing in length. The energy used is still expended by the muscle, but it is not converted into movement. Instead, the energy is dissipated as heat within the muscle tissue.
The first step toward generating a skeletal muscle contraction?
stimulation of the muscle by a nerve ending.
Do cardiac muscle makes most of its ATP via anaerobic pathways?
no
