<span>The answer is B. run on a treadmill, which increases speed. The maximum oxygen intake is measured during incremental exercise, such is a run on a treadmill. It represents a physical fitness of an individual and shows their undurance capacity during prolonged physical activity. It is expressed as VO2max (maximum volume of O2) which unit is liter of O2 per minute (L/min)</span>
Answer:
Hayflick theory
Explanation:
According to Hayflick theory aging process is controlled by a biological clock which lie within each living cell. According to this theory human cells have a limited life span.
this theory explain the mechanisms behind cellular aging. It suggests that a normal human cell can only replicate and divide arount forty to sixty times before it cannot divide anymore, and will break down by programmed cell death or apoptosis due to which number of body cells experiencing abnormalities with age.
The hindbrain is composed of the medulla, the pons, and the cerebellum. The medulla lies next to the spinal cord and controls functions outside conscious control, such as breathing and blood flow. In other words, the medulla controls essential functions.
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