Test 11- The heart

Question 1

Many people feel the most important 1.______ in the body is the heart. Together with the 2. ______ system it maintains life. The heart is roughly 3. ______ in shape and is located in the pericardial 4. ______.

Answer 1

1. muscle
2. circulatory
3. pyramidal
4. cavity

Question 2

The heart is divided into right and left halves which do not ______.

Answer 2

communicate

Question 3

Blood travels round the body in blood 1. ______ .The 2.______ carry blood from the heart to all parts of the body while blood returns to the heart in 3.______.

Answer 3

1. vessels
2. arteries
3. veins

Question 4

The pulmonary artery carries blood from the heart to the 1. ______, while the aorta carries blood to all parts of the body from the 2. ______.

Answer 4

1. lungs

2. heart

Question 5

Blood carried in the systemic arteries is ______ but in the pulmonary artery it is not.

Answer 5

oxygenated

Question 6

The heart is a 1._____ with four 2._____, two ventricles and two 3._____. The left ventricle has a much thicker 4._____ than the right ventricle because it is responsible for 5.______ blood around the 6._____ circulatory system. Blood is forced round the system by 7._____ (systole) and 8.______(diastole) of the heart.

Answer 6

1. pump
2. chambers
3. atria
4. wall
5. pumping
6. systemic
7. contraction
8. relaxation

Question 7

The pulmonary and aortic 1._____ control the exits from the ventricles. Each one has three 2._____. The sound of the heart is when they 3._____.

Answer 7

1. valves
2. cusps
3. close

Question 8

Each minute the heart 1._____ about 72 times. This is known as the 2._____ rate and can be measured in the radial artery in the 3._____.

Answer 8

1. beats
2. pulse
3. wrists

Question 9

The systemic arteries 1._____(divide) many times and become 2._____. They then deliver blood to small 3._____ from where exchange can take place.

Answer 9

1. branch
2. arterioles
3. capillaries