blood pressure

Question 1

cardiac output

Answer 1

amount of blood pumped out by each side of the heart (acc each ventricle) in 1min

Question 2

calc cardiac output

Answer 2

HR( bpm beats per min) X stroke volume (ml/beats)= ml/min

Question 3

calc blood pressure

Answer 3

systolic pa (mmHg)/ diastolic pa (mmHg)

Question 4

peripheral resistance

Answer 4

amount of friction blood encounters as it flows through blood vessels

• increase=vasoconstriction
• decreace=vasodilation

Question 5

systemic vascular resistance

Answer 5

• monitors + controls BP=baroreceptors
• stretch sensitive receptors
• located on aortic arch + carotid sinus

Question 6

the baroreceptor reflex 1

Answer 6

-homeostatic system for bp

receptor: baroreceptor (carotid sius)
afferent pathway: cranial nerve 9 (glossopharyngeal)
integrating centre: cardiovascular centres in the medulla)
efferent pathway: cranial nerve 10 (vagus)
effector organ: heart and systemic arterioles= vasodilation or vasoconstriction

Question 7

baroreceptor reflex 2

Answer 7

receptor= baroreceptors (aortic arch)
afferent pathway= cranial nerve 10 (vagus)
integrating centre= cardiovascular centres in medulla
efferent pathway: sympathetic fibers= adrenal medulla release of epinephrine/ norepinephrine
effector organ: heart and systemic arterioles/ vasoconstriction/ vasodilation