One biology question in the second year of junior high school, and one biology question in the secon

I don't think like the people before me...

This should be the systemic circulation, the starting point of the systemic circulation is the left ventricle of the heart, besides, the topic is the structure of the heart ( ) is to fill the structure of the heart, what aorta upstairs, a, is it the structure of the heart?

The left ventricle should be filled.

It's the left ventricle!!

Whatever your teacher said, it's all wrong.

Depend on. Your IQ. Blood travels from the atrium. Return to the ventricles. Don't be fooled by the diagram. Take a good look at the big picture in the book.

It should not be a part of the diagram, because it should be the left ventricle, and the beginning of the systemic and pulmonary circulation is in the ventricle, and the end point is in the atrium.

Systemic circulation: left ventricle - aorta - arteries at all levels - capillaries throughout the body - veins at all levels - superior and inferior vena cava - right ventricle End of systemic circulation.

Pulmonary circulation pathway: right ventricle - pulmonary artery - pulmonary capillaries - pulmonary vein - left atrium End of pulmonary circulation.

If you are in the same edition as my book, there should be a detailed explanation on page 71 of the first book. Also, dare to question the teacher's answers, sometimes the teacher may be out of the way.

I think it should be at A, because the direction of blood flow in the heart is the systemic circulation starting from the left atrium, passing through the systemic circulation to the right atrium at B to complete a circulation!

AC AG Because A is the aorta, the aorta is the largest blood vessel in the systemic circulation, it is the blood vessel that connects the left ventricle to the arterioles of all levels, while C and G are the enteric and renal arteries and the lower arterioles of the body, respectively. This is my personal opinion, not to be fully trusted, for reference.

B and B combine BB to turn green.

B and B combine BB to turn green.

B will be combined with B and BB will not be green.

1.Congenital behavior, as the name suggests, is an instinct that is born with it, and it is less adaptable to the environment than the acquired behavior, which is a reflex established through learning in the corresponding environment, which can make the organism better adapt to the environment.

2.The higher the animal, the more capable it is of learning, and the less time it learns the "trial and error" of a certain behavior.

3.Congenital sexual behavior.

You can apply the scent of the female rabbit to the body of the rabbit.

3.The nature of the female rabbit's identification of the rabbit.

On is the identification of the smell and the bite.

Dead or abandoned because the female rabbit put.

It acts as an aggressor.

The recognition of smell is innate.

The solution is. Let this Timrub Bunny.

It has the same body odor as others.