Biology 1201A Lecture Notes - Lecture 25: Aortic Body, Carotid Body, Brainstem
2 Oct 2016
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Oxygen movement from alveoli to capillaries: recall, after oxygen enters through your mouth/nose and eventually gets to either your left or right lungs, it will enter the alveoli. The respiratory center: the respiratory center of the brain is in the brain stem. They gather info on co2 levels, ph (but not o2 levels) and send it to the respiratory center for processing: peripheral chemoreceptors (outside the brain) detect o2 levels as well as co2 and ph. These include cn 9 (glossopharngeal) nerve from the carotid body chemoreceptor, and. It executes changes in breathing by controlling different muscles through motor nerves in the spinal cord: Motor nerves muscles: c1 c3 accessory muscles, c3 c5 diaphragm, t1 t11 intercostal muscles, t6 l1 abdominal muscles. Consider: two broad" categories must be considered which may affect hemoglobin saturation: 1. Is there enough oxygen present to saturate the hemoglobin, and 2. physiological factors which affect.
