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Humans have a two lungs-one heart system because that is essential to survive and thrive on earth. This is the product of millions of years of evolution and humans have been molded specifically for life on earth.
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How is a frog's internal and external organs similar to a humans?
A frog has ears, eyes, and a mouth just like a human. They also have two hands and two feet. The internal organs consist of brain, lungs, heart, and digestive tract just like a human.
How are pigs and humans different?
Pig digestive tracts and nutritional needs are very similar to humans. Pigs also have hearts that are similar in size and makeup to the human heart. Pig heart valves are used to replace defective human heart valves.
Whats a two chambered heart?
The heart of a fish is a two chambered heart, having only one atrium and one ventricle.
What organs used for respiration?
Several organs are used for respiration. These organs include the lungs, heart, diaphragm, rib cage, trachea, arteries and veins, and the nose and mouth.
Do tadpoles have gills and a two chamered heart?
When tadpoles first hatch and are sub aquatic they have gills. As they become less dependent on water they develop lungs. They have a two chambered heart which eventually, during the metamorphosis to a frog, becomes 3 chambered.
How many lungs are there?
You will always heard that humans have only two lungs . NOT RIGHT ! Humans actually have 5 lungs together . 3 in the right side and 2 in the left side . Why two in the left side ? Because of the heart occupying a lot of space there is not enough space for the other lung .
How many lungs do cows have?
Cows have two lungs, just as humans do.
Why do humans have 1 heart but 2 lungs?
Because lungs take in air and air is spread out so it needs more surface area, whereas the heart takes in and pumps blood, which is liquid and needs less surface area. P.S: the heart has two parts, two ventricles and two atria. Don't depend on my ans btw.
The Heart is located in which two cavities?
The heart is located in the thoracic cavity, which also includes the lungs. In addition, the heart is in the mediastinum, which is the area between the two lungs.
What are 3 organs in the human body?
skin the largest organ in the body, liver, and kidney.
Do humans have 4 lungs?
yer it is, my mate has it
What are the two main areas that the heart pumps blood to?
The left side of the heart pumps blood to the head and body. The right side of the heart pumps blood to the lungs
Does blood flow one way in the body?
Yes. It makes two circuits (circles), from the heart to the lungs, back to the heart, to the body, and back to the heart again.
Why is the mammalian heart- two hearts that beat as one?
Because one part beats to pump blood to the lungs and the other beats to pump blood to the rest of your body. They are really one heart with two sections.
Two examples of involuntary muscle cells?
Heart and eye HEART AND LUNGS
What are the two main organs in your chest?
The lungs and the heart.
Which two organs does the ribs protects?
heart and lungs
