the heart exam questions &
Answers(RATED A+)
Why could the blockage in Figure 1 cause cells in the heart to die? (2) - ANSWER-less blood flows
through or less blood flows to the heart (muscle / cells / tissue)
-less oxygen (reaches the heart muscle)
Explain how a stent works as a treatment for a person with a blockage in a coronary artery.(2) -
ANSWER-opens / widens (artery)
- so (more) blood can flow through
Describe and explain the differences between the walls of arteries and veins. (2) - ANSWER-Arteries -
hick walls made of elastic fibres and smooth muscle to withstand and maintain the high blood
pressure generated from the heart.
-The blood pressure is much lower in veins so they have much thinner walls.
Humans have a double circulatory system. Explain what this means. (3) - ANSWER- 2 loops/circuits
joined together.
-first loop the heart pumps blood to the lungs to be oxygenated and then it returns to the heart.
- second loop the heart pumps blood all around the body to supply the cells so they are able to
exchange substances with blood before returning to the heart.
which blood vessels will you find valves and what are their purpose? (2) - ANSWER-Valves are found
in veins.
-They make sure the blood only flows in one direction/ prevent backflow.
what does the heart look like? - ANSWER
Answers(RATED A+)
Why could the blockage in Figure 1 cause cells in the heart to die? (2) - ANSWER-less blood flows
through or less blood flows to the heart (muscle / cells / tissue)
-less oxygen (reaches the heart muscle)
Explain how a stent works as a treatment for a person with a blockage in a coronary artery.(2) -
ANSWER-opens / widens (artery)
- so (more) blood can flow through
Describe and explain the differences between the walls of arteries and veins. (2) - ANSWER-Arteries -
hick walls made of elastic fibres and smooth muscle to withstand and maintain the high blood
pressure generated from the heart.
-The blood pressure is much lower in veins so they have much thinner walls.
Humans have a double circulatory system. Explain what this means. (3) - ANSWER- 2 loops/circuits
joined together.
-first loop the heart pumps blood to the lungs to be oxygenated and then it returns to the heart.
- second loop the heart pumps blood all around the body to supply the cells so they are able to
exchange substances with blood before returning to the heart.
which blood vessels will you find valves and what are their purpose? (2) - ANSWER-Valves are found
in veins.
-They make sure the blood only flows in one direction/ prevent backflow.
what does the heart look like? - ANSWER
