GENERAL ANATOMY
RESPIRATORY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
It contracts and relaxes during respiration to change the volume of the chest cavity
|
|
|
It serves as the passage of air into the lungs
|
|
|
It carries blood throughout the body
|
|
|
It is the site of gas exchange
|
Detailed explanation-1: -d. It is the site of gas exchange Diaphragm is the muscle at the base of the lungs which aids during exhalation and inhalation. When the diaphragm muscle contract, it pulls downwards creating more space on the surrounding of the lungs together with the rib cage expanding.
Detailed explanation-2: -The diaphragm is a thin skeletal muscle that sits at the base of the chest and separates the abdomen from the chest. It contracts and flattens when you inhale. This creates a vacuum effect that pulls air into the lungs. When you exhale, the diaphragm relaxes and the air is pushed out of lungs.
Detailed explanation-3: -Correct option: B. Explanation: When the chest expands air enters the lungs. This is because during inspiration the diaphragm contracts and moves downwards.
Detailed explanation-4: -Diaphragm helps in breathing by moving up and down. In inhalation, the diaphragm becomes flat and moves downwards. In exhalation, diaphragm relaxes and moves upwards.
Detailed explanation-5: -The primary function of the respiratory system is to deliver oxygen to the cells of the body’s tissues and remove carbon dioxide, a cell waste product.