HTHSCI 1H06 Lecture Notes - Lecture 5: Mean Arterial Pressure, Internal Carotid Artery, Common Carotid Artery
10 Feb 2018
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He(cid:373)ody(cid:374)a(cid:373)ics & blood: hemodynamics, change in pressures throughout circulatory system, the further away blood is from the heart, the lower the pressure is in the vessels, blood pressure drops quickly as it enters the capillaries. Bp: systolic, diastolic, pulse & mean (arterial) pressure. Smaller radius = greater resistance: the greater the viscosity, the greater the vascular resistance. System shuts off until blood pressure drops again. Send out signals to cv system and adrenal oblongata: role of adrenal medulla, releases epinephrine and norepinephrine. Fight or flight response and blood vol (cid:894)don"t forget ace! (cid:895: decrease in blood volume, raa system describe steps from renin release to affects of angiotensin ii on tpr. Increased renin release: decrease in bp, angiotensinogen released from liver, angiotensin converting enzyme in the lungs released, adrenal cortex stimulated to released aldosterone, kidneys increase sodium and water reabsorb.
