Inspiration is initiated by the contraction of diaphragm which increases the volume of thoracic chamber in the antero-posterior axis.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338732
Assertion : Mammals perform negative pressure breathing Reason : Using muscular movement mammals create a pressure gradient such that they can perform inspiration and expiration
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Mammals can eat and breathe at the same time because mammals have a negative pressure breathing.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338733
Expiration involves
1 Relaxation of diaphragm and external intercostal muscles
2 Contraction of diaphragm and external intercostal muscles
3 Contraction of diaphragm muscles
4 Contraction of intercostal muscles
Explanation:
During expiration or exhalation the inner intercostal muscles contract bringing the ribs back to the original position and the diaphragm is also raised back. This reduces the space in the chest cavity and increases the pressure. This expels the air out of the lungs
BIOXI17: BREATHING AND EXCHANGE OF GASES
338734
During inspiration muscle of diaphragm
1 Contracts
2 Expands
3 No effect
4 Coil-like string
Explanation:
The diaphragm is the major muscle responsible for breathing. It is a thin, domeshaped muscle that separates the abdominal cavity from the thoracic cavity. During inhalation, the diaphragm contracts, so that its centre moves caudally (downward) and its edges move rostrally (upward).
Inspiration is initiated by the contraction of diaphragm which increases the volume of thoracic chamber in the antero-posterior axis.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338732
Assertion : Mammals perform negative pressure breathing Reason : Using muscular movement mammals create a pressure gradient such that they can perform inspiration and expiration
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Mammals can eat and breathe at the same time because mammals have a negative pressure breathing.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338733
Expiration involves
1 Relaxation of diaphragm and external intercostal muscles
2 Contraction of diaphragm and external intercostal muscles
3 Contraction of diaphragm muscles
4 Contraction of intercostal muscles
Explanation:
During expiration or exhalation the inner intercostal muscles contract bringing the ribs back to the original position and the diaphragm is also raised back. This reduces the space in the chest cavity and increases the pressure. This expels the air out of the lungs
BIOXI17: BREATHING AND EXCHANGE OF GASES
338734
During inspiration muscle of diaphragm
1 Contracts
2 Expands
3 No effect
4 Coil-like string
Explanation:
The diaphragm is the major muscle responsible for breathing. It is a thin, domeshaped muscle that separates the abdominal cavity from the thoracic cavity. During inhalation, the diaphragm contracts, so that its centre moves caudally (downward) and its edges move rostrally (upward).
Inspiration is initiated by the contraction of diaphragm which increases the volume of thoracic chamber in the antero-posterior axis.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338732
Assertion : Mammals perform negative pressure breathing Reason : Using muscular movement mammals create a pressure gradient such that they can perform inspiration and expiration
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Mammals can eat and breathe at the same time because mammals have a negative pressure breathing.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338733
Expiration involves
1 Relaxation of diaphragm and external intercostal muscles
2 Contraction of diaphragm and external intercostal muscles
3 Contraction of diaphragm muscles
4 Contraction of intercostal muscles
Explanation:
During expiration or exhalation the inner intercostal muscles contract bringing the ribs back to the original position and the diaphragm is also raised back. This reduces the space in the chest cavity and increases the pressure. This expels the air out of the lungs
BIOXI17: BREATHING AND EXCHANGE OF GASES
338734
During inspiration muscle of diaphragm
1 Contracts
2 Expands
3 No effect
4 Coil-like string
Explanation:
The diaphragm is the major muscle responsible for breathing. It is a thin, domeshaped muscle that separates the abdominal cavity from the thoracic cavity. During inhalation, the diaphragm contracts, so that its centre moves caudally (downward) and its edges move rostrally (upward).
Inspiration is initiated by the contraction of diaphragm which increases the volume of thoracic chamber in the antero-posterior axis.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338732
Assertion : Mammals perform negative pressure breathing Reason : Using muscular movement mammals create a pressure gradient such that they can perform inspiration and expiration
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Mammals can eat and breathe at the same time because mammals have a negative pressure breathing.
BIOXI17: BREATHING AND EXCHANGE OF GASES
338733
Expiration involves
1 Relaxation of diaphragm and external intercostal muscles
2 Contraction of diaphragm and external intercostal muscles
3 Contraction of diaphragm muscles
4 Contraction of intercostal muscles
Explanation:
During expiration or exhalation the inner intercostal muscles contract bringing the ribs back to the original position and the diaphragm is also raised back. This reduces the space in the chest cavity and increases the pressure. This expels the air out of the lungs
BIOXI17: BREATHING AND EXCHANGE OF GASES
338734
During inspiration muscle of diaphragm
1 Contracts
2 Expands
3 No effect
4 Coil-like string
Explanation:
The diaphragm is the major muscle responsible for breathing. It is a thin, domeshaped muscle that separates the abdominal cavity from the thoracic cavity. During inhalation, the diaphragm contracts, so that its centre moves caudally (downward) and its edges move rostrally (upward).
