1.2 Pre-Assessment! ♥ THE CARDIOVASCULAR SYSTEM

Steve is a 47 year old male who has a lot of plaque buildup in his arteries due to lack of exercise and a diet high in fats. He has recently been complaining of vision problems, chest pain, and severe headaches. His doctor informs him in his latest visit that his blood pressure is too high for his current age. What is most likely happening to the flow of blood in Steve's cardiovascular system?

• Blood flow is continuing like normal and is not affected by his high blood pressure.

• Blood flow has stopped completely which is causing his severe headaches due to lack of blood reaching the brain.

• Blood flow has increased in order to makeup for his lack of exercise

• Blood flow is decreased below normal due to the build of of plaque in the arteries causing an increase in blood pressure.

Hematocrit is a term used to describe the amount of red blood cells that exist within your blood. Red blood cells are responsible for carrying oxygen to your body cells and taking carbon dioxide back to your lungs. Using the graph provided what conclusion can you make about the relationship between viscosity and blood flow?

• When viscosity is low the flow of blood is also at a low level.

• Blood flow stays consistent as viscosity increases.

• An increase in viscosity causes an increase in blood flow.

• If viscosity reaches a high level, then blood flow shows a decrease.

Shown is an image of a normal artery compared with one diseased with Atherosclerosis. What can you conclude about the patient who has Atherosclerosis?

• Increase in Blood Pressure

• Decrease in Blood Pressure

• Increase in Blood Volume

• Decrease in Blood Volume

If you are more active, as in exercise more, what will happen to your average HEART RATE? (Your Resting and Active Pulse Combined)

• Lower Average Pulse

• Higher Average Pulse

If you are less active, as in exercise less, what will happen to your average HEART RATE? (Your Resting and Active Pulse combined)

• Lower Average Heart Rate

• Higher Average Heart Rate

The graph below contains data collected that compares the diameter of blood vessels to the flow of blood. The diameter refers to the distance across the vessel. As the vessel becomes smaller what effect do you see on blood flow and what can you then infer about blood pressure?

• Increased blood flow, decreased blood pressure

• Increased blood flow, increased blood pressure

• Decreased blood flow, decreased blood pressure

• Decreased blood flow, increased blood pressure