A. Hormones act as signal molecules between all body systems
Peripheral Chemoreceptors (Carotid + Aortic Bodies) and Central Chemoreceptors in the Medulla Oblongata detect high Carbon Dioxide levels in the blood during exercise. The respiratory centre in the Medulla Oblongata + PONS stimulate the intercostal muscles and the diphragm to contract in order to increase the rate and depth of breathing as to decrease levels of Carbon dioxide in the blood.
The thyroid gland secretes thyroxine which speeds up metabolism (the rate at which cells use glucose)
Answer:
satellites[a] GPS units[c] computers[e]
Explanation:
b. All adults should engage in moderate-intensity aerobic physical activity for at least 150 minutes per week, vigorous-intensity aerobic activity for 75 minutes per week, or an equivalent combination of the two.
Explanation:
The Physical Activity Guidelines for Americans guidelines for older adults states that:
Older adults are more susceptible to cardiac and nervous disorders along with poor musculoskeletal strength.
To maintain good cardiac and nervous health; musculoskeletal fitness and strength; reduce depression, cognitive decline; older adults are directed to engage in moderate-intensity/vigorous or combination of both aerobic physical activities and muscle-strengthening exercises.
They should include physical activities combining one or more of; occupational (work-based) activities; transportation (walking, cycling); household chores (cleaning); leisure time activities (gardening, dancing); sports activities (hiking, biking, swimming, games, running) and planned daily routine exercise activities; all of them as part of their daily routines performed as an individual, family or community-based activities
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Older adults with mobility issues should perform exercises to improve their balance and prevent falls
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Answer:
If the person has another meal after 5 pm, the glucose level in the blood will increase, and the insulin level too.
Several hours after the meal, the glucose levels will decrease, and the glucagon levels will increase.
Explanation:
When a person ingests another meal after 5 p.m, the glucose levels in the blood will increase, as the body does not need all that glucose right now the insulin levels in the blood will increase to store glucose for later. The glucagon levels after a meal are very low because the aim is to store glucose not use it.
Several hours after the meal, the body needs the energy to keep operating so it will use the glucose that was stored, to do this, the levels of glucagon in blood have to increase and release the glucose, and the levels of insulin in blood have to decrease.
