University:
University of Wolverhampton
Course:
4PY019 | Pharmacy
Academic year:

2024
Views:

183

Pages:

2
Author:

Sara

1. What does a low volume of ery- anemia - a condition which is characthrocytes indicate? terised by a decreased numb of RBC 2. What molecule binds to O2 in - haemoglobin the erythrocytes? Where does it - the binding of O2 to haemoglobin occurs happen? in RBCs as they pass through the lungs during the process of respiration 3. What are the small arteries and muscular vessels arterioles, elastic OR muscular - have smooth muscle in their walls that vessels? allows them to regulate blood flow + blood pa by constricting/dilating 4. What blood vessels are called re- - resistance vessels refer to arteriole besistance vessels? Why are they cause they are the primary site of resiscalled that? tance to blood flow - arterioles have the ability to constrict/dilate, which affects the resistance to blood flow + blood pa 5. What blood vessels are called capacitance vessels? Why are they called that? - refer to veins because they have the ability to stretch + hold large vol of blood - capable of storing significant amounts of blood 6. What ANS controls the contrac- SAN tion + dilation of small arterioles? What cells in the wall of small arterioles are involved in this process? 7. What 3 factors facilitate venous 1) muscle pump = contraction of skeletal blood return, explain why? muscles squeezes veins, pushing blood towards the heart 2) respiratory pump = pa changes during breathing help move blood in the thoracic cavity 1/2 3) venous valves = prevent backflow of blood, ensuring it moves towards the heart - these factors work together + low pa in veins, aiding in the return of blood to the heart 8. if you prescribe a drug to a patient to increase vasodilation, what effect will it have in blood pressure? - prescribing a drug to increase vasodilation will lead to the widening of blood vessels, which in turn will reduce peripheral resistance - this reduction in resistance allows blood to flow more easily - resulting in a decrease in blood pressure 9. if you prescribe a drug to a patient to increase vasoconstriction, what effect will it have in blood pressure? - prescribing a drug to increase vasoconstriction will lead to the narrowing of blood vessels, which in turn will increase peripheral resistance - this increase in resistance makes it harder for blood to flow, resulting in a rise in blood pressure 10. What effect on BP has a diuret- - a diuretic reduces blood pa by inic?Why? creasing the urine production, decreasing blood volume + thus reducing pressure 11. And a drug to reduce heart rate? - beta blocker Why? - block the action of adrenaline on beta-adrenergic receptors in the heart, which slows down the heart rate + reduces the force of contractions - leads to decrease in blood pa 12. if blood vessels constrict, resistance increase, and blood pressure increase 2/2