The frog's skin has many small blood vessels so that oxygen can go through the thin skin, through the fine blood vessels, and into the blood stream, allowing for the frog to breathe more easily.
Frogs breathe through both their lungs and skin. Their skin is usually moist so as to absorb oxygen from the surroundings. The skin has many blood vessels to facilitate easy diffusion of this oxygen into the blood.
Frogs can take oxygen directly through their skin into their bloodstream.
Frogs use cutaneous respiration, so they need lots of blood vessels under the skin to absorb oxygen.
Similar to humans, frogs have tiny blood vessels attached to the intestines to aid the absorption of nutrients into the blood after digestion.
The frog's circulatory system, like that of humans, includes the heart and blood vessels. The blood vessels include arteries, veins, and capillaries.
A frog is an amphibian, but adult frogs do not have gills. They absorb oxygen from the water through their skins, using special blood vessels. If the oxygen level in water is too low, frogs will move around to increase the water flow across the skin. Some frogs have creased skins that can increase their surface area. (see related question)
To take blood to the heart, or to carry itthrough out the body. In other words, it helps blood flow.
The spleen stores blood in the frog. It is an organ found within the mesentery. This is part of the frogs circulatory system.
Frogs have a heart and blood vessels like all other vertebrates. The heart pumps deoxygenated blood from the body to the lungs, and then pumps oxygenated blood from the lungs to the body. However, frogs only have a three chambered heart, which permits oxygen rich and oxygen poor blood to mix. This is less effecient than the four chambered hearts of mammals and birds.
I think so they do have Compound eyes which they cannot close there eyes but when they sleep they need to rise up to the surface to get water.
A tadpole's circulatory system has one loop and a 2 chamber heart. Oxygen-poor blood goes to the heart from the blood vessels in the body. Then the oxygen-poor blood goes up from the heart through blood vessels in the lungs. Next it comes out as oxygen-rich blood and goes back to the heart. Finally the oxygen-rich blood goes into the blood vessels in the body.
The blood that leaves the frogs heart through the ventricles is almost pure blood. This blood goes to the brain.
No it stickes
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The heart and lungs are so close together because the lungs have oxygen that are pumped into the heart so it can go into the blood stream. The lungs don't have blood but they transmit oxygen to the heart for the blood stream.