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Do starfish have a brain?
Starfish do not have true brains. They have a cluster of nerves called ganglia that form a ring in the centre of the starfish which is called the circumoral nerve ring. A radial nerve extends at right angles from the circumoral nerve ring into each arm. With the exception of eye spots in the tip of each arm there are no specialised sense organs (such as eyes or ears). These eyespots sense light and send back messages to the main nerve centre. The starfish is a primitive organism and as such does not make conscious decisions to eat or sleep. Changes in light intensity will cause different firing rates of nerves, which may equate to sleep. Minute traces of odours from clams and mussels or from dead fish will also excite the nervous system and will initiate the feeding cycle. A lot of these "sleep/wake" cycles or feeding cycles will be dictated by changes in light intensity or tidal rise and fall. All the best Starfish do not have true brains. They have a cluster of nerves called ganglia that form a ring in the centre of the starfish which is called the circumoral nerve ring. A radial nerve extends at right angles from the circumoral nerve ring into each arm. With the exception of eye spots in the tip of each arm there are no specialised sense organs (such as eyes or ears). These eyespots sense light and send back messages to the main nerve centre. The starfish is a primitive organism and as such does not make conscious decisions to eat or sleep. Changes in light intensity will cause different firing rates of nerves, which may equate to sleep. Minute traces of odours from clams and mussels or from dead fish will also excite the nervous system and will initiate the feeding cycle. A lot of these "sleep/wake" cycles or feeding cycles will be dictated by changes in light intensity or tidal rise and fall. All the best
What is infantile swallowing and how is it different from regular swallowing?
Infantile swallowing refers to the swallowing pattern seen in infants, where the tongue moves forward in a sucking motion to transfer liquids or soft foods to the back of the mouth. In contrast, regular swallowing involves a more complex and coordinated movement of the tongue, soft palate, and throat muscles to propel the food or liquid into the esophagus. Infantile swallowing is a developmental stage that typically transitions to adult-like swallowing patterns as a child grows.
What is the medical term meaning eating or taking by mouth?
fcvdoral cavityAlso known as the buccal cavity,oropharynx and glossopharyngeal cavitystoma/o, stomy, or oro (oral cavity, also common)stoma/o, stomy, or oro (oral cavity, also common)
What is scarlett fever?
Scarlet fever is one step higher then a strep throat it can even kill you some of the problems you may have are - chills -neck swollen of a fever that goes up to 101, Scarlet fever produces poisons toxins in your body and that is when it turns into Streptococcal toxic shock syndrome and that puts toxic gas into your system and that is how you die of scarlet fever Scarlet fever gives you all of the above, and also it can produce a generalized rash that involves even the palms and the soles. A serious complication of Scarlet fever is Post streptococcal glomerulonephritis, an acute kidney disease causing blood in the urine, increase blood pressure and generalized swelling, especially the face. This kidney problem appears 10 to 14 days after the skin infection. Scarlet Fever is a communicable disease that is highly contagious. It is much more serious than strep throat. Persons with Scarlet Fever may experience high fever, chills, severe ear aches, and rash. Death may occur. Often while recovering the skin may peal.
