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Actually, at no point do humans EVER have "gills," or even "gill slits." This common misconception was started in the early years of medicine. There are visible creases on the fetal neck that were originally thought to be remnants of past evolutionary stages. It is now known and commonly accepted that these creases are due to the formation of lymph nodes and lose visibility as the fetus matures.
Having gills would allow humans to breathe underwater, but living underwater would still be challenging due to other physiological and lifestyle factors. Humans would need adaptations for withstanding water pressure, movement in water, and protection from aquatic predators. Additionally, acquiring food and other resources would present logistical challenges in an underwater environment.
well not now if that is what you were saying! If you meant long ago, they still didn't. I mean if humans had gills, they would be able to breath underwater with no problem. I don't think that anyone has ever heard of humans with gills, or they being able to breath underwater without machines or air tanks that scientists have invented. To conclude, I bet there are NOT ANY humans with gills.
Yes, humans and all vertebrates have, what are colloquially known as "gill slits" at some point in their life. Indeed "gill slits", or more properly pharyngeal clefts (there are other terms as well) are one of the defining characteristics (along with a hollow dorsal nerve cord, post-anal tail, and notochord) of the phylum of organisms known as chordates to which vertebrates belong.
In humans and other fully land living animals (amniotes) pharyngeal clefts appear during embryonic development and are modified into parts of the jaw, ear and larynx (voice box). In the embryonic development of the various types of fishes, and the larva of some amphibians, the pharyngeal clefts are modified into the jaw and functioning gills.
The best scientific explanation for the appearance of these structures (along with related ones like the aortic arches) is the descent of both fishes (especially the group to which the lung fishes and coelacanths belong) and amniotes from a common ancestor.
For more see: http://pigeonchess.com/2012/05/31/gill-slits-by-any-other-name/
Yes, fish have gills.
YES FISH HAVE GILLS the gills are used for the output(takeing the water away) of water after the fish has extracted(picked out) the oxegyn from the water.
Yes, all true fish (not to be confused with water dwelling mammals like whales and dolphins) have gills which allow them to breathe in the water.
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What is the ability to breath underwater called?
The ability to breathe underwater is typically referred to as gills in aquatic animals such as fish, or as artificial devices like scuba equipment for humans. Humans do not have the natural ability to breathe underwater without assistance.
Could humans evolve gills?
It is highly unlikely that humans could evolve gills, as this would require drastic and improbable genetic changes. Humans are adapted to breathe air, and developing functional gills would involve significant alterations to our respiratory and circulatory systems. Additionally, the evolution of such a complex trait would likely take millions of years, if it were possible at all.
Why humans drown in water and fish suffocate on land?
Humans drown in water because our respiratory system is not adapted for underwater breathing and we cannot extract oxygen from water like fish can. Fish suffocate on land because their gills cannot extract oxygen from the air, which is less dense and has a different composition than water. Additionally, fish need to stay moist to allow their gills to function properly, which is why they suffocate when exposed to air for extended periods.
What is the gas exchange organ in fish?
The gas exchange organ in fish is called the gills. Fish use their gills to extract oxygen from water and release carbon dioxide, allowing them to breathe underwater. Gills are highly efficient at removing oxygen from water due to their large surface area and thin membranes.
What are the pros and cons of humans living underwater?
There are few reasons humans cannot live underwater.The main reason, of course, would be that humans lack gills. The gills in fish and other underwater organisms allow the oxygen in the water to be used inside the body. Oxygen is very fundamental to our body; for it keeps us and our cells alive and functioning.Another reason is that in salt water (the ocean), if we did have gills and consumed the water, our cells will lose all of their water because they of the hypertonic environment and they will shrivel up.we can't live under water because our lungs don't take in water they take in air, if we don't have air in our lungs then we could not function right!Were not fish LOL :)
Why don't grasshoppers have gills?
As grasshopper don't live underwater they don't need gills.
How can fish live in water?
They have gills which enable them to breath underwater.
Do you need to have gills to breathe underwater?
No, you do not need to have gills to breathe underwater. Humans use scuba gear or other diving equipment to breathe underwater. Gills are specialized organs found in fish and some other aquatic animals that enable them to extract oxygen from water.
Why can't a fly live underwater?
It doesn't have gills and has to breathe air.
Why does fish have to live in water?
They don't have lungs, they have gills. In simple terms, they don't have the right 'equipment' to breathe on land. Just like humans can't breathe underwater.
How long is a giant scorpion?
3 feet, and have gills and live underwater! Does this answer your question?
What is the ability to breath underwater called?
The ability to breathe underwater is typically referred to as gills in aquatic animals such as fish, or as artificial devices like scuba equipment for humans. Humans do not have the natural ability to breathe underwater without assistance.
Does seahorses have a gill?
There gills are located at the back of their heads
What fish characteristics do seahorses have?
Seahorses are fish that live underwater and breath with gills, and have fins.
Why can't you live underwater?
People can not breathe water. We have lungs rather than gills.
Which of these adaptations enables a fish to live underwater?
Gills are the adaptation that enables a fish to extract oxygen from water and release carbon dioxide. This allows fish to respire efficiently while living underwater.
Do have gills?
no only fish have gills or underwater things
