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Exam (elaborations)
CONDENSED Exam 3 Patho Study Guide Notes for 2025 Update.
○	Flow of fluid and blood depends on 
■	Pressure differences between the ends of a vessel 
●	Blood pressure keeps the vessels open-too high causes problems (ex. hypertension-heart failure) 
■	Vessel resistance to fluid flow 
●	Small vessels have more resistance 
○	Arterioles have more smooth muscle > vasoconstriction 
●	Longer vessels have more resistance 
●	More viscous fluids have greater resistance 
○	Polycythemia: thicker blood - increased hematocrit increases resistance...