Digestion is necessary for the body to get energy. Without it, the body, wouldn't be able to function. The digestion is what most animals use to get their energy. In a human body, we aren't able to just absorb the energy we need, so we must eat. The food that holds our energy which is glucose, is too big to fit into our bodies. So we would than put the food into our mouths, which would then in turn, would start munching/chewing on the food, sometimes called mechanical digestion. Our saliva, which is considered chemical digestion because it holds acids, that helps break down the food. Then your food would go down your esophagus, but your food don't go straight down, the peristalsis, which is the movement your throat, gets the food down. When your food gets to your stomach it is than broken up into smaller pieces that could fit into your small intestines. From there your your villi, which are tiny finger like things, in your small intestines would, absorb the nutrients into your blood stream where your cells would then absorb that glucose. That proceess is called cellular respiration. Cellular respiration takes place in your mitochondria where they make ATP. You need this glucose in order to do ATP, which stands for adenosine triphosphate, that provides the energy for your body to use. When your body is done using the ATP it would turn into ADP, meaning that it does not have the energy it used to have because you used it. In order for you to get back the ATP you would need to eat more and absorb the glucose.
Pearl Clams' Diet:
Plankton
Smaller sea creatures
Pearl Clam:
The way clams obtain food is that they would open up their shells (Shown in the slide) and the water would rush in when the shell is opened and go into the the mouth of the clam. When the water goes in, the plankton would go into the stomach and it would go through the process similar to the human digestion but it does not have a small intestine and a large intestine.
([1] and [2] )
Pearl Clams' Diet:
Plankton
Smaller sea creatures
Pearl Clam:
The way clams obtain food is that they would open up their shells (Shown in the slide) and the water would rush in when the shell is opened and go into the the mouth of the clam. When the water goes in, the plankton would go into the stomach and it would go through the process similar to the human digestion but it does not have a small intestine and a large intestine.
([1] and [2] )