The process of inspiration occurs as?
Correct answer: A. Lungs pull air inside
- A. Lungs pull air inside
- B. Passive transport of air takes place
- C. Passive expansion of air takes place
- D. Air is pushed inside
Explanation
Lungs pull air inside: This option is correct. During inspiration, the expansion of the thoracic cavity occurs passively due to the contraction of the diaphragm and the external intercostal muscles. This expansion leads to a decrease in intra-thoracic pressure, causing air to flow into the lungs.
Last updated
About Human Respiratory System
The human respiratory system conducts air to the alveoli, where oxygen and carbon dioxide exchange occurs across thin respiratory surfaces. Questions cover the nasal passage, trachea, bronchi, lungs, diaphragm and intercostal muscles, ventilation mechanics and gas transport, while distinguishing breathing and gaseous exchange from cellular respiration.
Practise Respiration
446 free Respiration MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A complex cartilaginous structure surrounding the upper end of the trachea is called:
A condition in which there is a decrease of oxygen to the tissue despite adequate blood flow to the tissue is_________?
A series of C shaped cartilage rings are found in the wall of:
A surfactant is a secretory product that is composed of:
All of the following contain cartilage except:___________?