Chemical factors: This is due to internal stimuli. Changes in the blood such as decrease in O2, increase in CO2 and decrease in PH cause impulse in the carotid artery which stimulates the respiratory centers in the medulla and cause breathing.
Mechanical factors: also called external stimuli. Compression of the fetal chest during delivery forces small amount of lung fluid out of the lungs. This increase in pressure in the chest draws air into the lungs.
Answer:
D. Fill the ventricles.
Explanation:
The medical definition is "an anatomical cavity or passage especially : a chamber of the heart that receives blood from the veins and forces it into a ventricle or ventricles."
A
person does have basic human rights and one is the freedom of expression. Though
this is the case, we should understand that our right to freely express
ourselves (from political to religious views), it does not necessarily give us
the right to impede another person’s. A play with words can easily hurt or even
harass other people, and in return may be a form of human right violation.
Answer:
Vitamin B12 can be made from genetically modified bacteria
