Since Alex is taking a hepatitis a vaccine, he should receive two doses of which is required with the vaccine. The interval of the two doses is six months apart. Therefore, if he already had receive his first dose, he will receive the second dose after six months starting from after the day that he has been injected.
During pregnancy the fetus depends on its mother for nourishment and oxygen since it cannot breathe air it's blood circulates differently than it does after birth.
Due to the circumstances stated above the mothers womb develops an organ known as the placenta that develops and implants in the mother's womb during pregnancy to provide oxygen and nutrients to the growing baby and remove waste products from the baby's blood
The fetus is connected to the placenta by the umbilical cord which contains blood vessels that transport nutrients and oxygen from the mothers blood to the baby and also transports waste products and carbon dioxide from the baby to the placenta and then to the mothers circulatory system to be eliminated.
Cellular respiration is the process of the cells inside the body breaking up the sugars and then the mitochodria turns it into energy for the cells. ... Inside the otter diffusion happens throughout the lungs.
the total surface area of a human lung IS 70 TO 75 square meters
Explanation:
Estimates of the total surface area of lungs vary from 50 to 75 square metres (540 to 810 sq ft); although this is often quoted in textbooks and the media being "the size of a tennis court"
