Respiratory System Functionality

This video tutorial covers the mechanics of breathing, focusing on the roles of intercostal muscles and the diaphragm during inhalation and exhalation. It explains how these processes change during exercise, highlighting the involvement of additional muscles like the pectorals and sternocleidomastoid. The video concludes with encouragement for exams and an invitation for viewers to ask questions.

What is the primary function of the intercostal muscles during inhalation?

• To move the ribs down and in

• To move the ribs up and out

• To relax the diaphragm

• To increase pressure inside the lungs

During inhalation, what happens to the diaphragm?

• It relaxes and moves upwards

• It contracts and moves downwards

• It remains stationary

• It expands and moves sideways

What causes air to be inhaled into the lungs?

• Lower pressure outside the body

• Higher pressure outside the body

• Equal pressure inside and outside the body

• Higher pressure inside the body

What shape does the diaphragm return to during exhalation?

• Dome-like shape

• Flat shape

• Square shape

• Triangular shape

What happens to the chest cavity during exhalation?

• It remains the same

• It decreases in size

• It increases in size

• It expands sideways

Which muscles help expand the lungs during exercise?

• Intercostal muscles

• Diaphragm

• Abdominals

• Pectorals and sternocleidomastoid

What is the role of the abdominals during exhalation in exercise?

• To forcefully pull the ribs downwards

• To forcefully pull the ribs upwards

• To relax the diaphragm

• To expand the chest cavity

Why is it important for the lungs to expand during exercise?

• To reduce oxygen intake

• To decrease lung capacity

• To increase carbon dioxide levels

• To take in more oxygen

What should students do if they have questions after watching the video?

• Search online

• Ask in the comment section

• Email the teacher

• Wait for the next video

What is the main purpose of the video?

• To prepare students for exams

• To promote a product

• To teach a new sport

• To entertain students