The events of inspiration begins with the;
Impulses are conducted on the phrenic nerve to muscle fibers in the diaphragm contracting them.
As the dome shaped diaphragm moves downward the thoracic cavity expands.
At the same time the external intercostal muscles may contract raising the ribs and expanding the thoracic cavity further.
The intra-alveolar pressure decreases
Atmospheric pressure greater than intra-alveolar pressure forces the air into the respiratory tract through the air passages.
The lungs fill with air.
Alternative RNA splicing determines which proteins are produced from each gene.
It's a ! cnidocytes help in defence and also in capturing prey ! so answer is A !!
Answer:
Explanation:
No, the sorting process is not completed yet. The group that has two dragonflies in it should be sorted out independently and matched together to form a specie. The dichotomous key is used to identify items that belong to a particular specie.
