3
Question
Which among the following statement is correct?
A. Normal breathing rate of a person is 15 to 18 times per minute.
B. Total area of gas exchange seen in the whole alveoli in two lungs is 36 to 72 square metre.
C. The total volume of air breathed in an out in the cycle of inhalation and exhalation is 500 ml.
D. Wind pipe is supported by rings of cartilage in order to avoid its collapse when there is lesser air in it.
Which among the following statement is correct?
A. Normal breathing rate of a person is 15 to 18 times per minute.
B. Total area of gas exchange seen in the whole alveoli in two lungs is 36 to 72 square metre.
C. The total volume of air breathed in an out in the cycle of inhalation and exhalation is 500 ml.
D. Wind pipe is supported by rings of cartilage in order to avoid its collapse when there is lesser air in it.
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Solution
The correct option is B A, B,C and D
Respiratory rate: A person's respiratory rate is the number of breaths you take per minute. The normal respiration rate for an adult at rest is 12 to 20 breaths per minute. Hence, the normal breathing rate of a person is 15 to 18 times per minute.
The lungs are a pair of spongy, air-filled organs located in the thorax. They are used for gas exchange between our blood and the air. A human adult probably has about 300 million bronchi that could cover an area of around 180m2. Hence, the total area of gas exchange seen in the whole alveoli in two lungs is 36 to 72 square metre.
Tidal Volume (TV): Volume of air inspired or expired during normal respiration. It is approx. 500 mL., i.e., a healthy man can inspire or expire approximately 6000 to 8000mL of air per minute. Hence, The total volume of air breathed in an out in the cycle of inhalation and exhalation is 500 ml.
The windpipe is also called as the trachea. The windpipe is a cartilaginous tube containing C shaped cartilaginous rings that connects the pharynx and larynx to the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs. Hence, windpipe is supported by rings of cartilage in order to avoid its collapse when there is lesser air in it.
So, the correct option is 'A, B, C and D'.
Respiratory rate: A person's respiratory rate is the number of breaths you take per minute. The normal respiration rate for an adult at rest is 12 to 20 breaths per minute. Hence, the normal breathing rate of a person is 15 to 18 times per minute.
The lungs are a pair of spongy, air-filled organs located in the thorax. They are used for gas exchange between our blood and the air. A human adult probably has about 300 million bronchi that could cover an area of around 180m2. Hence, the total area of gas exchange seen in the whole alveoli in two lungs is 36 to 72 square metre.
Tidal Volume (TV): Volume of air inspired or expired during normal respiration. It is approx. 500 mL., i.e., a healthy man can inspire or expire approximately 6000 to 8000mL of air per minute. Hence, The total volume of air breathed in an out in the cycle of inhalation and exhalation is 500 ml.
The windpipe is also called as the trachea. The windpipe is a cartilaginous tube containing C shaped cartilaginous rings that connects the pharynx and larynx to the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs. Hence, windpipe is supported by rings of cartilage in order to avoid its collapse when there is lesser air in it.
The lungs are a pair of spongy, air-filled organs located in the thorax. They are used for gas exchange between our blood and the air. A human adult probably has about 300 million bronchi that could cover an area of around 180m2. Hence, the total area of gas exchange seen in the whole alveoli in two lungs is 36 to 72 square metre.
Tidal Volume (TV): Volume of air inspired or expired during normal respiration. It is approx. 500 mL., i.e., a healthy man can inspire or expire approximately 6000 to 8000mL of air per minute. Hence, The total volume of air breathed in an out in the cycle of inhalation and exhalation is 500 ml.
The windpipe is also called as the trachea. The windpipe is a cartilaginous tube containing C shaped cartilaginous rings that connects the pharynx and larynx to the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs. Hence, windpipe is supported by rings of cartilage in order to avoid its collapse when there is lesser air in it.
So, the correct option is 'A, B, C and D'.
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