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The digestive system is a tube starting from the mouth and ending at the anus. Between are different compartments with different roles. The first stage of digestion occurs in the mouth. The teeth grind th...

Both are processes which involve the filtration of small molecules (such as water, glucose, amino acids) out of capillaries, while larger molecules, proteins and cells (such as red blood cells) remain in ...

• A receptor detects a change in stimuli e.g. eye detects light - An effector carries out a response e.g. muscle

Blood enters the right side of the heart through the vena cava. In Humans this is divided into what we refer to as the superior and inferior vena cava. These terms essentially mean the top and bottom vena...

Protons are actively transported using ATP out of the companion cell into the cell wall, creating an electrochemical gradient. These protons then re-enter the cell by facilitated d...