During heavy exercise, the co2 in muscle may drop to 20 mm hg. considering the oxygen-hemoglobin dissociation curve below, what is the approximate percent o2 saturation of hemoglobin in venous blood returning from skeletal muscles during heavy exercise?

this disease is :

* endemic (present in a defined area that is a village)

* a bacterial infection (treated with antibiotic)

* communicable by contact (by the hands)

manu-porterage is the most common mode of transmission, it transmits germs from one individual to another via the hands. this concerns infections of exogenous origin.

endemic disease, or endemic disease, refers to a disease that is constantly present in a given population, often tied to a specific geographic origin, as opposed to a pandemic that is not a sporadic disease.

antibiotics are molecules that have the property of killing (bactericidal) or limiting the spread (bacteriostatic) of bacteria.

answer(d) call 911;