Breathing:
Breathing (or ventilation) is the process of
moving air into and from the lungs to facilitate gas exchange with the internal
environment, mostly to flush out carbon dioxide and bring in oxygen.
Breathing is
simply the…….
a) the production of energy
b) gaseous exchange
c) cleaning of blood
d) all of these
Breathing is…………………process.
a) physical
b) chemical
c) nuclear
d) fermentation
Breathing is at……………....level.
a) cellular
b) tissue
c) organ
d) organism
Respiration is at…………….level.
a) cellular
b) tissue
c) organ
d) organism
Which of the following expands or compress the lungs as the lungs cannot move on their own?
a) muscles around lungs
b)diaphragm
c) kidneys and liver
d) both a and b
Explanation: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.
