Answer:
Person starts to exercise.
Skeletal muscle oxygen demand increase
Skeletal muscle metabolism increases
.Blood delivery to the skeletal muscle increases is order to provide more oxygen
Oxygen sensors cause local blood cell vessels to dilate
.
This steps briefly describe the physiology of exercise.
At the onset of exercise, skeletal muscles cells were sustained with available oxygen from the Myoglobin. Myoglobin is oxygen binding and storage protein found in cardiac and skeletal muscles cells. it has high storing capacity for oxygen.
However as the exercise becomes intense ATPs supply drops, oxygen demand increases,cellular metabolisms demand also increase to supply glucose and ATP to the cells.
The liver mediates Gluconeogenesis. Fatty acid is broken down to glucose for cellular respiration with' ketone bodies build up..Exercise also stimulates the breakdown of muscle glycogen to glucose, Therefore, cellular respiration takes place to break down the glucose to C02, H20 and energy with rise in temperature.
However, oxygen concentration is low, therefore muscles cells undergo anaerobic respiration with lactic acid pathway. Lactic acid build up in muscles cells.The muscles cells under go oxygen debt to break down lactic acid to glucose in muscle.
Therefore to adjust the mechanism oxygen homeostatic sensors increases hyperventilation to increase oxygen intake through the lungs, and vasodilation. so that maximum volume of blood containing oxygen is transported to muscles cells; to sustain the intense activity
Explanation:
