Answer:
the temperature rise becoming a fever that are caused by chemicals called pyrogen falling the bloodstream to fight off infections
<span>because they can accelerate heart rate, increase muscle tension, elevate blood pressure</span>
<span>The answer to this question would be: Gastric juices mix with food to partially digest it.
Stomach or gaster will produce gastric juice which has an enzyme to digest protein and also lower the pH into acid. This way the gaster can kill bacteria that digested with the food to protect the intestine and helping digesting a part of the food(mainly protein). The food will be kept in the stomach for 2 hours so it's not quickly moved to the small intestine.
Other digestion will be done by the pancreas which can digest fat, carbohydrate, and protein in the small intestine.</span>
A. Retrograde
B.Anterograde
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Short answer:
Valve which permits blood to flow from the right atrium to the right ventricle is tricuspid valve
Long answer:
The right side of the heart has lower pressure compare to the left side. There is a valve that support the lower pressure so the blood can move easily from the right atrium to the left ventricle. The valve is called tricuspid valve. It's called "Tri" because there are 3 flaps/leaflets on the valve.
For your information, the left side of the heart only has 2-leaflet valve, which make smaller circular opening compare to the 3-leaflet valve on the right side. That's because the left side has higher pressure than the right side.
