Answer:
Sternocleidomastoid, pectoralis minor, scalenes
Explanation:
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.
All members of the kingdom Protista are Eukaryotic.
Answer:
Explained.
Explanation:
When oxygen delivery becomes insufficient to support a runner's aerobic metabolism, cells switch to an emergency mode in which ATP is insufficiently produced and is lactic acid is produced as by product. Thus the runner finds difficult to remain competitive in the race because of lack energy.
To overcome this state the runner needs to increase his/her oxygen in take. This why it is advised to breath deeply.
The answer would be A I’m sure
Small sugars (monosaccharides and disaccharides) glucose fructose, sucrose etc
Amino acids