Sample essay topic, essay writing: Nothing - 387 words

Nose - external nares - nostrils divided by nasal septum - internal nares - opening to nasopharynx- hard palate - separates oral/nasal cavities - soft palate - posterior to hard palate - nasal conchae- projections of nasal cavity that cause turbulence in airflow - effects on humidity temp, filtration, olfactory sense - cilia - sweap mucous and trapped particles into pharynxPharynx - shared chamber- respiratory and digestive nasopharynx, oropharynx, and larynopharynxLarynx - epiglottis - prevents food from entering the glottis - thyroid cartilage- adams apple - ericoid cartilage - posterior support-both protect aboveSound - False vc - protect elastic true vocal cordsPitch - length, width, and tensionVolume - force of airAomplification and resonance within pharynx, oral and nasal cavities and sinusesWords - formed by tongue, lips, and cheeksTrachea - windpipe is tough flexible tube supported by 20 trached cart. (C shaped rings open to esophagus)Bronchi - primary secondary tertiary and quaternary and quaternaryBronchioles- sympathetic innervation controls constriction and dilation of bronchiolesAlveolar ducts open to alveolar sacs to alveoli made of simple squamous epith. 150 millionAlveolar macrophages - engulfing dust and particles - surfactant reduces surface tension within the alveoli to keep them inflated in exhalSquamous epith of a - basement mem - endoth capLungs - right 3 lobe left 2 lobe - apex superior, base on diaphram - mediastinal surf cardiac notchPleural Cavities - parietal pleura (covers rib cage) & visceral pleura (covers lungs) are continuous & separated by pleura - reduce frict. Step 1- pulmonary ventilation - air into and out Step 2- Gas diffusion across res membraneStep 3- Storage and transport of O and CO2Step 4- Exchange of O and CO2 between bloodPneumothorax- puncture of pleura lining Quiet breathing- inhalation contraction, ex passive - forced breathing - both inh exh activeTidal volume - amount of air in and out during one cycle - Expiratory reserve volume - voluntarily expelled at end of cycle - Inspiratory Reserve Volume - taken in above the tidal VVital Capacity=IRV+ERV+TVRV-raminaing air after ERV alveoli no collapseMV - air after pneumothoraxNitrogen 78.6% Oxygen 20.8% water vapor.5% CO2 .04%Parital pressure - porpotion of total atmosph pressDetermines rate of diffusionPN2+P02+PH20+PCO2=760mg98.5% of oxygen is bound to hemoglobin - lower O content of tissue, increased temp, and decreased pH the more O2 is released by Hb plasma transport - 7%hemoglobin binding - carbaminohemoglobin 23%carbonic acid ormation - sodium bicarbonate - NaHCO3 is formed in plasma 70%rate of cellular exchange=rate of capillary delivery and removal= rate of O2 asorption and CO2 excretionrespiratory rate= # breaths per min - medulla oblongata controlsRRC- insiratory center(active during quiet)- expiratory center(active only forced breathing).

Research paper and essay writing, free essay topics, sample works Nothing

Please do not pass this sample essay as your own, otherwise you will be accused of plagiarism. Our writers can write any custom essay for you!
Like this post? Please share to your friends:
Mann Erudite – Essays on Literary Works