1. Inhalation is followed by exhalation,isn't it?
2.The respiratory movements are rhythmic,aren't they?
3.These contractions are induced by nervous impulses,aren't they?
4.Expiration is a less active process than inspiration,isn't it?
5.Expiration involves a vigorous action of the abdominal muscles,isn't it?
1. Inhalation is followed by exhalation,isn't it?
2.The respiratory movements are rhythmic,aren't they?
3.These contractions are induced by nervous impulses,aren't they?
4.Expiration is a less active process than inspiration,isn't it?
5.Expiration involves a vigorous action of the abdominal muscles,isn't it?