Post-lecture activity (Week 10)
POST-LECTURE ACTIVITY
THE CARDIOVASCULAR SYSTEM
Week 10
Please submit your answers in this forum.
1. Adequate cardiac output is necessary in order to supply oxygen and other nutrients to all body tissues. Cardiac output is influenced by stroke volume and heart rate. Factors affecting the stroke volume includes PRELOAD, CONTRACTILITY and AFTERLOAD.
In the following conditions, indicate what factor/s influence the cardiac output: PRELOAD, CONTRACTILITY, AFTERLOAD, HEART RATE. Explain the why the factor/s affects cardiac output in 1 to 2 sentences.
a. High blood pressure
b. Massive bleeding
c. the drug dopamine
d. Running a sprint
e. Hyperthryoidism with increased secretion of thyroid hormones
f. Massive myocardial infarction (cardiac tissue death)
g. Hypothermia
h. Emotional distress
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