Organ reserve, homeostasis,
allostasis
Young adults rarely experience
serious illness because organ reserve, homeostasis and allostasis functioning
tend to work in harmony. Organ reserve is the ability of an organ to
efficiently return to its original physiological state after repeated episodes
of stress. Homeostasis is the ability of a system to adjust to its internal
environment to maintain a stable equilibrium. Allostasis is the process of
maintaining homeostasis through the adaptive change of the organism’s internal
environment. All of these three systems of body functioning tend to work in
harmony.
Answer: Cell specialization or cell differentiation is a process of converting generic cells in the body into specialized cells. The specialized cells can perform a certain function within the body. The cell specialization occurs in two stages of a multicellular organism.
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Answer:
ought that sleep was a passive state, a time when a person's brain and body shut down for the night to rest and recover. But now, researchers know that sleep is a highly active time, a period during which the brain and some physiological processes may be hard at work.
For example, some hormones involved in growth in children, cell repair or digestion are boosted during sleep. Brain pathways involved in learning and memory also increase, according to the National Institutes of Health (NIH).
In fact, the brain is sometimes more active when a person is asleep than when he or she is awake, according to Harvard Medical School. But sleep can also slow down many other physiological processes, from heart rate and breathing to body temperature and blood pressure.
Explanation:
Answer:
d. breathing apparatus on the top of the head.