Lecture 22 - BIOL104-04 Principles of Biology I October 20,...

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Unformatted text preview: BIOL104-04 Principles of Biology I October 20, 2010 Lecture # 22 Ch 51 Osmotic Regulation & the Urinary System Pulmonary circulation Systemic circulation Venae cavae Pulmonary artery Aorta Pulmonary vein A muscle cell in the left ventricle undergoes cellular respiration and releases a molecule of CO 2 . This molecule travels to the leg and then ultimately is exhaled in the lung. Place the following structures in the order (#1 - #14) the CO 2 molecule will travel. (7 points) __1 ___ Left ventricle _____ Pulmonary artery _____ Right ventricle _____ Aorta _____ Left atrium _____ Right atrium _____ Artery _____ Vein _____ Arteriole _____ Tissue Capillary _____ Venule _____ Pulmonary arteriole _____ Inferior vena cava _____ Pulmonary capillary Name _________________ Homeostasis • The balance of water & electrolytes is also important • Water balance – Intake & output are the same • Need to also have balanced solutes – Sodium – Chloride – Potassium – Calcium • Electrolytes - compounds that dissociates into ions when dissolved in water • Electrolyte imbalance can lead to muscle spasms, confusion, irregular heartbeat, fatigue, paralysis, death Water balance • Water in – Absorbing it via osmosis – Drinking – Eating – By-product of cellular respiration • Water out – Urine & feces – Evaporation – Osmotic loss Osmotic pressure is a measure...
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This note was uploaded on 05/03/2011 for the course BIOL 104 taught by Professor Bray-speth during the Fall '11 term at Saint Louis.

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Lecture 22 - BIOL104-04 Principles of Biology I October 20,...

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