BIOL 003 Lecture Notes - Lecture 24: Cystic Fibrosis, Moe Williams, Peripheral Nervous System
Document Summary
Pressure & solubility e. g. co2(g) co2(aq) out embolism bends. N2 has low solubility in liquids does not dissolve in blood at sea level. At great depths, n2 may begin to dissolve in blood if ascend too quickly, n2 bubbles. Tuberculosis: a bacterium destroys lung tissue causing bloody sputum. Emphysema: alveoli swell, burst & fuse together. Less sa of alveoli = less gas exchange. Asthma: constricted airways reduces airflow to alveoli breathlessness. Pneumonia: inflammation of the alveoli fills with pus & fluids (exudate), which interferes with gas exchange. Cystic fibrosis: genetic disorder causes excessive mucous secretion, repeatedly clogging air passages & trapping bacteria. Nerves bundles of nerve cells (bundle = fascicle). Perineurium: middle wrapping, around fascicles (peri- = wrapped around) Dendrites: increase surface area room to receive neurotransmitters/action potentials. Axon: slender projection, conducts electrical impulses away from cell body. Schwann cell (filled w/ myelin fat): helps impulses jump from node to node. Schwann cell wraps around to insulate axon.
