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professor190 [17]
3 years ago
7

If skeletal muscles work to the point of fatigue, the muscle cells may not have sufficient oxygen to carry out aerobic respirati

on. What processes do muscle cells use if oxygen is not available for aerobic respiration?a. lactic acid fermentation b. citric acid cycle c. ethanol fermentation d. glycolysis
Biology
1 answer:
Anit [1.1K]3 years ago
7 0

Answer:

a. lactic acid fermentation

Explanation:

Under conditions of intense exercise, the oxygen gas obtained by pulmonary respiration may be insufficient to meet the needs of muscle cells in the work of obtaining energy from cellular respiration.

However, even in the absence of oxygen gas, our muscle cells can release the available energy in glucose, leading to even smaller amounts of ATP molecules. Under these conditions, muscle cells perform lactic fermentation, a process that is virtually identical to glycolysis (the first set of cellular respiration reactions), except that pyruvic acid is transformed into lactic acid with the formation of 2 ATPs.  Despite the lower energy yield, fermentation ensures the energy supply to the muscle. Lactic acid formed under these conditions has been associated with muscle pain and fatigue characteristic of intense physical exercise. Recent research, however, has shown that pain is caused by muscle fiber micro-injuries rather than lactic acid as it is rapidly metabolized and eliminated.

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Show the possible genotypes and phenotypes of the offspring from a cross between a heterozygous male with type A blood and a het
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Answer:

here

Explanation:

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Read 2 more answers
Select the correct answer from each drop-down menu.
V125BC [204]

The nervous system and the muscle system respond to stimuli to produce motion. The skeletal movements of muscles are mostly voluntary.

Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the spinal cord.

<h3>What are Skeletal muscles?</h3>

Skeletal muscles may be defined as the muscles that fasten to your bones and authorize you to achieve a broad range of activities and operations.

Skeletal muscles control the direct movement of a person's will and are hence referred to as voluntary movement. While the spinal cord is associated with both movements directly or indirectly. It is a prolonged, delicate tubelike network liable for holding incoming and outgoing messages through the brain to the rest body.

Therefore, it is well described above.

To learn more about Involuntary movements, refer to the link:

brainly.com/question/1462286

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