PATHOLOGY

PATHOLOGY MCQ

RESPIRATORY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
when your rib muscles and diaphragm contract or relax to allow air in or out
A
alveoli
B
breathing
C
cartilage
D
cell
E
homeostasis
Explanation: 

Detailed explanation-1: -When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.

Detailed explanation-2: -The diaphragm relaxes during natural exhalation, helping the air to pass out as the lungs deflate. Like the diaphragm, the ribs shield the lungs and expand while we inhale to promote room for the lungs to expand. Then the ribs contract, expelling the air from the lungs.

Detailed explanation-3: -The diaphragm is a muscle crucial for breathing. When the diaphragm contracts, suction is created that draws air into the lungs. Air is exhaled as the diaphragm relaxes, in combination with other muscles and tissues.

There is 1 question to complete.