During inspiration, the intercostals muscles between ribs contract; what will happen to rib cage?
a) pulled forward
b) pulled outward
c) pulled downward
d) both a and b
Explanation: sternum also pushed farther away from vertebral column
During inspiration, the intercostals muscles between ribs contract; what will happen to rib cage?
a) pulled forward
b) pulled outward
c) pulled downward
d) both a and b
Explanation: sternum also pushed farther away from vertebral column
Which of the following occur/s during inspiration?
a) thoracic cavity increases
b) pleural cavity enlarges
c) partial vacuum creates between pleura
d) all of these
Explanation: during inspiration, the pressure of the air inside the lungs decreases so air rushes in inside the lungs through air passageway.
What will happen to diaphragm during inhalation?
a) it contracts
b) it relaxes
c) it remains domes
d) none of these
Explanation: 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.
In human, normally expiration is…….. process.
a) active
b) passive
c) both
d) none
Explanation: inspiration is also known as exhalation and requires no energy however during severe muscular exercise, it becomes active
During expiration, the intercostals muscles between ribs relax; what will happen to ribs?
a) move forward
b) move downward
c) move inward
d) both b and c
Explanation: sternum comes to its original position as it was moved farther away from vertebral column during inhalation
