During normal inhalation, contraction of the diaphragm and the contraction of external intercostals expands the chest cavity. The increased volume of the thoracic cavity results in reduced alveolar pressure than the atmospheric pressure to facilitate the flow of air into the lungs in response to the pressure gradient.
During deep inhalation as it occurs when running up the stairs, the accessory muscles of inhalation also participate to increase the volume of the chest cavity. The contraction of scalene and sternocleidomastoid muscles increase the volume of the chest cavity further to create a greater drop in alveolar pressure.
During forceful inhalation, the sternocleidomastoid muscles serve to elevate the sternum, the scalene muscles serve to elevate the first two ribs while the pectoralis minor elevate the third through fifth ribs.
The muscles used in the breathing process involves the thoracic muscles like external intercostal muscles, internal intercostal muscles, muscles attached to thoracic muscles like pectoralis major and minor and the accessory muscles like sternocleidomastoid muscle and scalene muscles.
The muscles involved in the inhalation process during running up the stairs are scalenes which help elevate the upper first and second ribs, the sternocleidomastoid muscle which helps to raise the sternum and the pectoralis minor.
A biogenesis is the idea that life has originated from small, single celled organic matter (such as bacteria). All of the other theories are less relavant to the topic.
Answer: Explanation: Cellular respiration is the chemical reaction in which glucose and oxygen are turned into water, carbon dioxide, and energy (ATP). ... C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP is the complete balanced chemical formula for cellular respiration.
In meiosis, the chromosome pairs do the crossing over where there is an exchange of genetic material between them and because of it the
chromatids held together by the centromere are no longer the same.