Biology › Respiratory system › Question #10032
Single Choice Easy

Q Which muscle does not contract during normal inspiration?

ID: #10032 Respiratory system 121 views
Question Info
#10032Q ID
EasyDifficulty
Respiratory systemTopic
Start Quiz on This Topic
 Your Answer

Choose the Best Option

Click any option to instantly check if you're correct.

  • A Contraction in diaphragm ✔ ✖
  • B Contraction in external intercostal muscle ✔ ✖
  • C Contraction in internal intercostal muscle ✔ ✖
  • D Sternum moves upward ✔ ✖
Correct Answer

Explanation

During normal inspiration, the diaphragm and external intercostal muscles contract, which increases the volume of the thoracic cavity. This expansion of the thoracic cavity causes the ribs to move outward and the sternum to move upward. However, the internal intercostal muscles are involved in forced expiration, not normal inspiration. These muscles contract during forced expiration to decrease the volume of the thoracic cavity and expel air from the lungs.

 Continue Practice
Previous Question Next Question
 Share

Share This Question

Challenge a friend or share with your study group.

 More from This Topic

Related MCQ Questions

What type of epithelium makes up the alveoli in the lungs?... How does high altitude affect the number of red blood cells (RBCs) in human blood?... What provides support to trachea, bronchi, and bronchioles?... Where is the location of the pneumotaxic center?... What muscles can be used to increase the strength of inspiration and expiration?... What is the concentration of oxygen in expired air?... Which chronic respiratory disorder is commonly caused by smoking?... What is not a characteristic of alveoli?... Which part of the brain is responsible for regulating the respiratory process?... Which of the following is not a component of the human respiratory system?...