B5
Villi - These are lots of little hairs on the intestines which increase the surface area a lot.
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.
Heart
Left Ventricle Right Ventricle Left Atrium Right Atrium
Aorta
Pulmonary Artery
Vena Cava
Pulmonary Vein
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
Blood
Blood Contains:
Platelets
Red Blood Cells
Plasma
White Blood Cells
Red Blood Cells:
Red blood Cells job is to carry oxygen around the body in the form of hemoglobin, its concave shape maximizes its surface area so it can carry more oxygen
Neuron+Synapse
Hormones
Homeostasis Temperature
Blood vessels
Homeostasis Water
Homeostasis Glucose
Vein-
smooth endothelium to reduce friction on blood flow.
gives a wide space for blood to travel at low pressure
Artery-
Thick wall is to with stand high pressure.
Narrow lumen maintain the pressure
Capillary-
Diffusion- oxygen+glucose diffuse into the cell.
-CO2 and waste leave cell
Plasma is the liquid in blood which suspends everything else in place
Platelets are the things in the blood which go to where you have a cut in your skin and binds to it, it begins to form a scab to stop it from getting infected.
White blood cells are the cells that prevent, or cure diseases from pathogens. They engulf any pathogens that have been isolated by antibodies to disable them.
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
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