Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?

Biology

1 answer:

marissa [1.9K]2 years ago

5 0

Answer:

Because it prevents venous blood from mixing with arterial blood (which is rich in oxygen), in this way the circulation is more efficient.

Explanation:

In land vertebrates, the blood circulation is structured in two independent circuits: the pulmonary circulation, where oxygenation of the blood occurs and the elimination of the carbonic anhydride that it contains, returning back to the heart through its left atrium; and the systemic or major circulation, impelled from the left ventricle, transports the oxygenated blood and the nutrients that it assimilates as it passes through the digestive system, to the tissues of the animal, where it is charged again with anhydride carbonic and other waste substances, returning back to the heart, where it enters through the right atrium. These systems are independent and prevents venous blood (which is poor in oxygen) from mixing with arterial blood. These systems are independent and prevents venous blood (which is poor in oxygen) from mixing with arterial blood.

You might be interested in

In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external environmen

katen-ka-za [31]

Answer: option C) negatively charged and contains less sodium

Explanation:

In the absence of any stimulus, a neuron is said to be resting. During this time, more positively charged potassium ions (K+) than sodium ions (Na+) occupy the interior of its cell membrane, whereas more sodium ions than potassium occupies the exterior - making the cell membrane to be electrically Polarized with net positive charge outside and a net negative charge inside the cell membrane.

Thus, the interior is negatively charged and contains less sodium ions

5 0

2 years ago

1. What is one way that kinetic energy might be involved in rescue team missions?

tiny-mole [99]

1. Kinetic Energy is the energy of mass in motion. In a rescue mission, kinetic energy is the most used energy to carry out the rescue operation successfully.Anything that moves and has a role in rescuing the victims can be termed as the kinetic energy involved in rescue team missions

2. You may be saving someone from a rock slide, where the rocks will fall at any time, before they fall they have potential energy.

8 0

1 year ago

Read 2 more answers

Describe the steps in making packaging and exporting a protein from a cell

irina [24]

Answer:

The steps in making packaging and exporting a protein from a cell are listed below in the following points:

Protein is made from the Ribosomes.

These proteins are gathered in the endoplasmic reticulum.

From ER the proteins are exported to the Golgi bodies. These Golgi apparatus is found in the vesicles.

The Golgi bodies modify the protein to suitable forms that can be absorbed.

Finally it is transported to all part of cells in our body.

8 0

1 year ago

In response to seasonal changes in temperature, many organisms must alter the composition of their plasma membranes to maintain

aleksandrvk [35]

Answer:

C. a decrease in phospholipid fatty acid side chain length and a decrease in side chain saturation

Explanation:

Temperature is a factor that has a huge impact on cell membrane structure, more precisely its fluidity. So, for example, if temperature increases, the cell membrane becomes more fluid because the fatty acid tails of the phospholipids become less rigid.

5 0

1 year ago

the embryos of several types of animals look very similar and develop in almost the same manner especially in the early stages w

masya89 [10]

Embryos of many different kinds of animals: mammals, birds, reptiles, fish, etc. look very similar and it is often difficult to tell them apart. 
This shows that the animals are similar and that they develop similarly, implying that they are related, have common ancestors and that they started out the same, gradually evolving different traits, but that the basic plan for a creature's beginning remains the same.

7 0

2 years ago