Question

Describe how the lactic acid produced in muscle cells enters the blood

Answer 1

Answer:

Explanation:INVESTIGATIONS into the chemical changes connected with muscular

contraction have been mainly carried out on the muscles of cold-blooded

animals. The theories constructed from the results of these researches

have been usefully employed in application to the much more difficult

problems which concern the changes associated with muscular con-

traction in mammals. However fundamental these results may be, we

cannot reasonably expect that the changes which occur in isolated cold-

blooded muscles in strange environments can be transferred without any

modifications to the consideration of intact, innervated warm-blooded

muscles, provided with a circulation, and forming part of a complex

organism.

Answer 2

Answer:

• In the muscles of the skeleton, lactic acid fermentation takes place.
• Lactate dehydrogenase converts pyruvate to lactic acid when oxygen is insufficient. Muscle exhaustion and lactic acid buildup are the results.
• Our skeletal muscles produce lactic acid when anaerobic circumstances prevail.
• When there is not enough oxygen available to carry out oxidative phosphorylation, lactic acid fermentation takes place. NAD+ is recovered and used in the glycolysis pathway after pyruvic acid is converted to lactic acid.
• The tiny blood arteries that run through the muscles are compressed during muscle contraction, which is the fundamental reason for this lactic acid buildup.
• The blood vessels open up when the muscle relaxes, allowing fresh blood to flow into the muscle and gradually flush the lactic acid out.

#SPJ2