But mammals need far more oxygen to maintain their high metabolic rates than lower animals. Mammalian skin is impermeable to gases so that water loss through it is minimized.
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Skin with feathers made of keratin mammals.
Mammals skin is impermeable to gases. So they need a more extensive respiratory surface. Soft moist skin permeable to water and gases reptiles. Mammals have developed a complex respiratory system to get more oxygen to maintain their high metabolic rates.
B mammalian skin in impermeable so that water loss through it is minimised. Hence mammals have a complex respiratory system. Human being has complex respiratory system reason.
Cutaneous respiration or cutaneous gas exchange is a form of respiration in which gas exchange occurs across the skin or outer integument of an organism rather than gills or lungs cutaneous respiration may be the sole method of gas exchange or may accompany other forms such as ventilation cutaneous respiration occurs in a wide variety of organisms including insects amphibians fish sea. All mammals have some hair on their skin even marine mammals like whales dolphins and porpoises which appear to be hairless. Thus a complex respiratory system has evolved in mammals to meet this need.
If both the assertion and the reason are true and the reason is a correct explanation of the assertion. Ask the internet if humans or mammals absorb any oxygen through their skin you get an interesting result an oft repeated phrase. Mammalian skin is impermeable to gases.
Skin of a different nature exists in amphibians reptiles and birds. The skin interfaces with the environment and is the first line of defense from external factors. Mammals are known to be species endothermic or hot blood.
They generally have a higher metabolic demand than exothermic or cold blooded vertebrates. In mammals complex respiratory system has developed. Skin has follicles with hair made of keratin.
Similarly the skin of mammals is thicker and impermeable than other vertebrate species which greatly prevents the skin from being the organ used to perform the gas exchange process. The problem is that when you google it. Human skin is impermeable to gases.
Neet zoology breathing and exchange of gases questions solutions with pdf and difficulty level. Gills covered by an operculum with one gill slit. Impermeable skin covered in scales of keratin birds.
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