READ THE PASSAGE GIVEN BELOW AND ANSWER THE QUESTIONS THAT FOLLOW:
The heart is one of the most important components of the human body. The heart of the human body has a constant job of keeping oxygen-rich blood flowing through the body. All cells in the body need a constant supply of oxygen, especially the brain. Brain cells survive only four to five minutes after being cut off from oxygen, and death ensues throughout the body. Damage to the heart muscle, valves, or pacemaker can cause heart disease. When the muscles are damaged, the heart is unable to pump properly. If the valve is damaged, blood cannot flow normally.
Dr John Gibbon of the United States developed a machine in 1953 that could temporarily take from the heart. Surgeons had the option of repairing or replacing a defective heart. Many patients have had plastic heart valves inserted when they had heart defects. Many people are now being kept alive by tiny battery-powered pacemakers.
1. Why do brain cells require a constant supply of oxygen?
A) To maintain a steady heartbeat
B) To filter waste products
C) To prevent cell damage
D) To promote muscle growth
2. How long can brain cells survive after being cut off from oxygen?
A) Four to five hours
B) Four to five minutes
C) Four to five days
D) Four to five weeks
3. What happens when the heart is unable to pump properly?
A) The brain stops functioning.
B) Blood cannot flow normally.
C) Waste products build up in the body.
D) The muscles begin to atrophy.
4. What is the purpose of a plastic heart valve?
A) To prevent damage to the heart muscle
B) To promote muscle growth
C) To filter waste products
D) To replace a defective heart valve
5. What can cause heart disease?
A) Damage to the liver
B) Damage to the kidneys
C) Damage to the heart muscle, valves, or pacemaker
D) Damage to the lungs
6. What happens when the heart is unable to pump blood properly due to muscle damage?
A) Brain damage can occur
B) Kidney damage can occur
C) Liver damage can occur
D) Lung damage can occur
7. Write the antonym given in the passage for the word "flawless".
The heart is one of the most important components of the human body. The heart of the human body has a constant job of keeping oxygen-rich blood flowing through the body. All cells in the body need a constant supply of oxygen, especially the brain. Brain cells survive only four to five minutes after being cut off from oxygen, and death ensues throughout the body. Damage to the heart muscle, valves, or pacemaker can cause heart disease. When the muscles are damaged, the heart is unable to pump properly. If the valve is damaged, blood cannot flow normally.
Dr John Gibbon of the United States developed a machine in 1953 that could temporarily take from the heart. Surgeons had the option of repairing or replacing a defective heart. Many patients have had plastic heart valves inserted when they had heart defects. Many people are now being kept alive by tiny battery-powered pacemakers.
1. Why do brain cells require a constant supply of oxygen?
A) To maintain a steady heartbeat
B) To filter waste products
C) To prevent cell damage
D) To promote muscle growth
2. How long can brain cells survive after being cut off from oxygen?
A) Four to five hours
B) Four to five minutes
C) Four to five days
D) Four to five weeks
3. What happens when the heart is unable to pump properly?
A) The brain stops functioning.
B) Blood cannot flow normally.
C) Waste products build up in the body.
D) The muscles begin to atrophy.
4. What is the purpose of a plastic heart valve?
A) To prevent damage to the heart muscle
B) To promote muscle growth
C) To filter waste products
D) To replace a defective heart valve
5. What can cause heart disease?
A) Damage to the liver
B) Damage to the kidneys
C) Damage to the heart muscle, valves, or pacemaker
D) Damage to the lungs
6. What happens when the heart is unable to pump blood properly due to muscle damage?
A) Brain damage can occur
B) Kidney damage can occur
C) Liver damage can occur
D) Lung damage can occur
7. Write the antonym given in the passage for the word "flawless".
Answers & Comments
Answer:
1. to prevent cell damage.
2. 4 to 5 mins
3. blood cannot flow normally
4. to replace a defective heart valve
5. damage to heart muscles, valves or pacemaker
6. brain damage can occur
7. defective