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Unformatted text preview: Lecture Notes Bio 109, Fall 2010, Dr. Catherine Loudon Lecture 17 – 11/03/10 – Blood pressure, capillaries, lymph system 1) Announcements a) Extra office hour Th noon – 1 pm (5215 McGaugh Hall) b) BioSci tutor review session Friday 2) Blood pressure measurements of humans a) Which part of the system? Arteries b) How mean arterial pressure is calculated (2/3 diastolic + 1/3 systolic) c) Measurement device used by medical personnel – sphygmomanometer (Fig. 15-7) 3) Consider – What happens if your blood pressure is too high? a) Blood vessels can rupture and bleed into tissues (in brain called a stroke) 4) Consider – What happens if your blood pressure is too low? a) Blood flow to brain is inadequate, so not enough oxygen, may become dizzy or faint 5) Blood pressure is affected by (Fig. 15-10) a) Blood volume b) Cardiac output c) Total resistance of blood vessel network (“peripheral resistance”) d) Distribution of blood in veins vs arteries 6) Regulation of blood pressure involves cardiovascular system and kidneys (Fig. 15-9) Regulation of blood pressure involves cardiovascular system and kidneys (Fig....
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This note was uploaded on 12/01/2010 for the course BIO SCI Bio Sci E1 taught by Professor Catherineloudin during the Spring '10 term at UC Irvine.
- Spring '10