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B5 (Heart (Left Ventricle Right Ventricle Left Atrium Right Atrium, Aorta
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B5
Heart
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The role of the heart is to pump the not oxidized blood to the lungs, where it becomes oxidized through gaseous exchange. Then back to the heart and then circulating the rest of the body
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Homeostasis Temperature
Your body temperature should always be
37 degrees, this is because that is the temperature the enzymes function best at.
When you are too hot:
-Your hairs lie flat, so no air is trapped
-Sweat is produced, as when it evaporates, energy is transferred from your skin to the surroundings
-Vasodilation happens, where your blood vessels relax, allowing more blood to be transferred to the surroundings
When you are too cold:
-Hairs stand on end, trapping insulating air
-Very little sweat is produced
-Vasoconstriction happens, where the blood vessels constrict and don't let blood transfer to your surroundings
Blood vessels
Vein-
smooth endothelium to reduce friction on blood flow.
gives a wide space for blood to travel at low pressure
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Alveoli - The thing that does gaseous exchange where the become oxidize and then it goes back to the heart to be pumped around body.
Reflexes - Reflex are made possible by pathways called reflex arcs which can act on an impulse before that impulse reaches the brain.
Surface Area:Volume - The larger the volume of organism is the smaller the surface area. This means that heat loss will be easier for a smaller organism.
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