what is the second types of mammals mentioned above?
Cetaceans are aquatic mammals constituting the infraorder Cetacea.
Cetacea
Cetaceans () (from , from ) are aquatic mammals constituting the infraorder Cetacea. There are around 89 living species, which are divided into two parvorders. The first is the Odontoceti, the toothed whales, which consist of around 70 species, including the dolphin
what is the purpose of the epiglottis in the respiratory system of humans It prevents food from entering the windpipe and the lungs what are its variations? A high-rising epiglottis is a normal anatomical variation, visible during an examination of the mouth. It does not cause any serious problem apart from maybe a mild sensation of a foreign body in the throat. does it play any role in speaking? In some languages, the epiglottis is used to produce epiglottal consonant speech sounds, though this sound-type is rather rare. how does it affect swallowing? During swallowing, the epiglottis bends backwards, folding over the entrance to the trachea, and preventing food from going into it. what is the structure of this organ which is covered during swallowing? It is shaped like a leaf of purslane and has a free upper part that rests behind the tongue, and a lower stalk can it be replaced? UNANSWERABLE which are the disorders related to it? Inflammation of the epiglottis is known as epiglottitis. Epiglottitis is mainly caused by "Haemophilus influenzae". A person with epiglottitis may have a fever, sore throat, difficulty swallowing, and difficulty breathing. is it found in vertebrates only? The epiglottis is present in mammals, including land mammals and cetaceans, also as a cartilaginous structure. Like in humans, it functions to prevent entry of food into the trachea during swallowing.
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Cetacea [SEP] Introduction
Cetaceans () (from , from ) are aquatic mammals constituting the infraorder Cetacea. There are around 89 living species, which are divided into two parvorders. The first is the Odontoceti, the toothed whales, which consist of around 70 species, including the dolphin (which includes killer whales), porpoise, beluga whale, narwhal, sperm whale, and beaked whale. The second is the Mysticeti, the baleen (from ) whales, which have a filter-feeder system, and consist of fifteen species divided into three families, and include the blue whale, right whale, bowhead whale, rorqual, and gray whale. The ancient and extinct ancestors of modern whales (Archaeoceti) lived 53 to 45 million years ago.