What is Digestion and How does it work??
Digestion is the process by which food is broken down into their smallest parts so that the body can use them to build and nourish cells and to provide energy. The digestive system in humans contains a set of organs that help play a major role. Digestion involves the mixing of food, its movement through the digestive tract, and chemical breakdown of the large molecules of food into smaller molecules. [1]
Digestion begins in the mouth, when we chew and swallow with help from the saliva gland that begins to digest starch from food into smaller molecules, and is completed in the small intestine. With the help of the peristalsis, food is along the digestive tract. The esophagus allows swallowed food to be pushed along the digestive tract because of the help of the peristalsis. Carbohydrates are broken down when you take the first bite. The food then enters the stomach, which has three tasks to do: store the swallowed food and liquid, mix up the food, liquid, and digestive juice produced by the stomach, and empties its contents slowly into the small intestine where all the nutrients are absorbed and enter the bloodstream. In the stomach, enzymes attack the molecules of proteins and are finished off in the small intestine. Then the smaller protein molecules are amino acids which are small enough to be absorbed through the small intestine and right into the blood. As the food is digested in the small intestine and dissolved into the juices from the pancreas, liver, and intestine, the contents of the intestine are mixed and pushed forward to allow further digestion. Its breakdown produces glucose, which is stored in the liver and provides you with energy. [2]
|
What is Cellular Respiration?
Cellular respiration is critical for the survival of most organisms because the energy in glucose cannot be used by cells until it is stored in ATP. Cells use ATP to power all of their activities—to grow, divide, replace worn out cell parts, and execute many other tasks. Cellular respiration is critical for the survival of most organisms because the energy in glucose cannot be used by cells until it is stored in ATP. Cells use ATP to power all of their activities—to grow, divide, replace worn out cell parts, and execute many other tasks. [3]
This process begins in the cytoplasm, where molecules of glucose are broken down into smaller molecules. Oxygen is not involved, and only a small amount of energy is released. Next, the process moves on to the mitochondria, where the small molecules are broken down into even smaller molecules. These chemical reactions require oxygen, and they release a great deal of energy. This energy is still stored in the form of chemical energy, but now it is stored in molecules that are readily used by the cell. The three final products are carbon dioxide, water, and energy.
|
NOW HOW ITS DONE IN THE RAY.....
The Atlantic Guitarfish rays have a varied diet. They are carnivores which means that they eat animals rather than plants and algae. Their diet consist of creatures such as bottom dwelling creatures such as small mollusks, crustaceans, scallops, and a variety of small fish.
How the Atlantic Guitarfish obtains Food
While catching prey, the guitarfish uses its rostrum to hold the prey against the sea floor and also to block the prey's escape route. They open their mouths as the water flows and food flows into their mouths. Prey is captured by the guitarfish using suction. Suction capture, bite manipulation and suction transport behaviors in the guitarfish are similar to one another and aid in the process of gaining food. Their grayish brown with small white spots, it blends in with the sandy seabed, allowing its prey to expect nothing is there. The poor unsuspecting prey won't realize anything until the sand erupts and bye bye prey. Watch below how they do it!
Anatomy
They have flattened elongated bodies with triangular or "shovel-shaped" heads and small ray-like wings instead of pectoral fins and two dorsal fins. They are one of the smallest species of guitarfishes and reach lengths of only 0.75 m in males and 0.76 m in females (typically about 0.6 m). They swim like sharks usually do, by moving their tails from side-to-side, but typically with their heads slightly higher than their tails.
Atlantic guitarfishes have 56-80 blunt teeth (in 8-10 rows) in their upper jaws and 51-82 teeth (in 7-9 rows) in their lower jaws. Their teeth are rectangular at their base with rounded corners and are fit closely together.
Atlantic guitarfishes have 56-80 blunt teeth (in 8-10 rows) in their upper jaws and 51-82 teeth (in 7-9 rows) in their lower jaws. Their teeth are rectangular at their base with rounded corners and are fit closely together.