When do the accessory respiratory muscles become active?
A. The muscles of expiration are the abdominal and diaphragm muscles.
B. The muscles of expiration are the abdominal and internal intercostals muscles.
C. The muscles of expiration are the external and internal intercostals muscles.
D. Exhalation is a passive process and does not require the action of any muscles
Answer: B. The muscles of expiration are the abdominal and internal intercostals muscles.
You might also like to view...
Soluble proteins secreted by plasma cells are called antibodies
Indicate whether the statement is true or false
Unlike other regions of the brain, portions of the hypothalamus are not guarded by the blood–brain barrier, so the hypothalamus can easily monitor chemical changes in the blood
a. True b. False Indicate whether the statement is true or false
Explain how the processes of gastrulation and organogenesis are related
What will be an ideal response?
The appendix contains lymphatic nodules.
Answer the following statement true (T) or false (F)