Question
Contraction of the external intercostal muscles causes which of the following to occur?a. The diaphragm moves downward.b. The rib cage is compressed.c. The thoracic cavity volume decreases.d. The ribs and sternum move upward.
Step 1
The intercostal muscles are those that are found between the ribs. They play a crucial role in the process of breathing. Show more…
Show all steps
Your feedback will help us improve your experience
Aditya Sood and 83 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Contraction of the external intercostal muscles causes which of the following to occur? a. The diaphragm moves downward. b. The rib cage is compressed. c. The thoracic cavity volume decreases. d. The ribs and sternum move upward.
In negative pressure filling, air moves into the lungs when a. the volume of the thoracic cavity increases. b. the pressure in the thoracic cavity decreases. c. air is forced down the trachea by muscular contractions of the mouth and pharynx. d. all of the above occur. e. only a and b occur.
Which structure moves down as its muscles contract? A. trachea B. diaphragm C. pharynx D. ribs
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD