CSB346H1 Lecture Notes - Lecture 1: Central Chemoreceptors, Nucleus Ambiguus, Aorta
10 Jan 2018
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Examine the levels of o2, co2, & h+ (ph) in the blood: for e. g. a fall in arterial po2 or an increase in arterial pco2 leads to an increase in the rate. & depth of respiration through activation of the chemoreceptor reflex. * glucose & o2 are both needed to make atp. Nasal cavity oral cavity pharynx (throat) larynx (voice box) trachea (windpipe) bronchus lungs. Bronchus bronchiole terminal bronchioles alveoli alveolar capillaries diaphragm. Continuous sheet of blood (capillaries) around alveoli to maximize sa. Conjunctive zone (larynx: aka dead space, only gas transport is happening, nothing else, we need it to get to the alveoli, but nothing is happening in this zone. Alveoli are air bubbles composed of alveolar type i & type ii cells: type i, coated in capillaries. Involved in diffusion: thin layer between alveolar space & capillary (0. 2 micrometers, allows for o2 to travel across the space quickly, type ii.
