Answer:
The muscularis externa layer
Explanation:
The muscularis externa layer has three layers of muscle. An innner oblique layer , a middle circular and an external longitudinal layer. The contraction of these muscle layers help to break up the food mechanically.
Answer: streptococcus pneumonia infection
In the case of streptococcus
pneumonia infection, the lungs become inflamed
<span>in
which the alveoli and bronchial passages become plugged with thick fluid or
exudates where the lungs are unable to stretch and partially obstructed. The symptoms
includes colds, high fever, severe chills, headache, cough, and chest pain.
Mostly, bacteria, virus, and fungi cause it.</span>
