Lecture 21 - BIOL104-04 Principles of Biology I October 15,...

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Unformatted text preview: BIOL104-04 Principles of Biology I October 15, 2010 Lecture #21 Ch 50 The Circulatory System Functions of blood • Transportation – Oxyhemoglobin – Nutrient molecules – Metabolic wastes • Regulation – Regulatory hormones – Temperature regulation • Contraction & dilation of blood vessels • Protection – Blood clotting Functions of blood • Transportation – Oxyhemoglobin – Nutrient molecules – Metabolic wastes • Regulation – Regulatory hormones – Temperature regulation • Contraction & dilation of blood vessels • Protection – Blood clotting – White blood cells (leukocytes) Blood • Connective tissue – Plasma - a fluid matrix – Formed elements • Platelets • Leukocytes • Red blood cells (erythrocytes) Blood plasma • 92% water • Nutrients, wastes & hormones • Ions – A dilute salt solution – Na + , Cl- , bicarbonate ions – Ca 2+ , Mg 2+ , Cu 2+ , K + , Zn 2+ • Proteins – Albumin • Alpha & beta-globulin (carriers of lipids & steroid hormones) – Fibrinogen for blood clotting Blood vessels...
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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 21 - BIOL104-04 Principles of Biology I October 15,...

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