If you know about biological problems, please enter, and biological questions are answered.

In natural conditions, viruses are not easily inactivated, so viruses do not die with or without rain, and of course, if there is no wound, there is no danger even if there is a virus on the body surface.

First of all, rabies virus is not a kind of bacteria, that is, there is no difference between aerobic and anaerobic, and secondly, viruses and bacteria are clearly different, viruses must parasitize on the host, can not survive independently, can only parasitize in the human body, animals and other living tissues, leaving the living tissues will die, that is to say, the virus will die in vitro including rainwater.

My thoughts are; Doesn't the virus become crystals when it leaves living cells, and it won't be long before it dies.

Summary. Hello, I'm glad to be able to ask you your question, according to the situation you described, at present, this biological consciousness can be solved in general, biology is also a very important subject.

I suggest you refer to it, I hope it can help you, and I wish you a happy life Biology Questions Answered.

Hello, I'm glad to be able to have your problem, according to the situation you described, at present, under normal circumstances, this biological consciousness can be solved, biology is also a very important discipline, it is recommended that you take the Xun Ming exam, I hope to help you, I wish you a happy life

Hello, I need you to send a ** so that I can better your question, thank you for understanding the 17 questions trouble a little faster.

Wait a minute, I'll see.

I'm sorry, I didn't see you say question 17 right away.

Hello Question 17 choose c

No, it isn't. a

Select a hypothalamus to produce a pro-thyroid hydrazine release to act on the pituitary gland, promote the pituitary gland to secrete a pro-thyroid fishery, promote the thyroid lane to act on the thyroid line, and promote the synthesis and division of thyroid excitation, which belongs to the hierarchical regulation of the nail group absolute removal, due to the existence of the hierarchical regulation of the omen, hypothalamus or pituitary lesion macropaw may cause hypothyroidism, c is correct;

Hello, this is the reason why I chose C, I suggest you refer to it.

A or C?

I'm sorry to choose A.

I'm always wrong.

The text option, you can see it, but it's a, but I'm wrong.

Because I'm so anxious that I'm worried about delaying your time, this is a lesion of the pituitary brain or pituitary gland, which may cause hypothyroidism.

Hello choose this option, this text option is the right one.

Summary. The heart is made up of four chambers, which are the left and right atria and the left and right ventricles. Between the atria and ventricles there is a valve called the atrioventricular valve, which controls the direction of blood flow.

The atria are the upper part of the heart, one on the left and one on the left. The walls of the atria are thin and their main function is to receive venous blood and send it into the ventricles. The interior of the atria has some small muscles called the atrial muscles, which contract to help send blood into the ventricles.

The ventricles are the lower part of the heart, one on the left and one on the left. The ventricles have thick walls and their main function is to push blood to various parts of the body. The ventricles have some large muscles inside called the ventricular muscles, and their contractions can create a powerful force that pushes blood throughout the body.

The atrioventricular valve between the atria and ventricles is made up of two leaflets, the tricuspid and mitral valves. The tricuspid valve is located between the right atrium and the right ventricle, and the mitral valve is located between the left atrium and the left ventricle. These two valves control the direction of blood flow and prevent blood from flowing backwards.

One by one, oh kiss.

Good. Hello, dear, I'm honored to answer for you! <>

The practice of this question is that the heart is made up of ventricles and atria and the cardiac conduction system, and its function is mainly to power the body's blood circulation. 1. The structure of the heart is composed of two groups of atria and ventricles, namely the left atrium, the left ventricle and right atrium, and the right ventricle. The four chambers of the heart are separated by a cardiac septum, and the atrioventricles are connected by a one-way valve, with the mitral valve between the left atrioventricles and the tricuspid valve between the right atrioventricles.

There is a pericardial wrap on the outside of the heart. Because the left and right atrioventricles are responsible for different circulation, the left atrioventricle is larger than the right atriovenle, and the myocardial wall is thicker. In addition to the atrioventricular structure, the heart also has a cardiac nervous system, which is composed of sinus node, internodal bundle, atrioventricular node, and atrioventricular bundle.

2. The function of the heart. As the most important part of the circulatory system, the heart provides power for the body's blood circulation, so that blood flows continuously through the body's blood vessels.

The heart is made up of four chambers, which are the left and right atria and the left and right ventricles. Between the atria and ventricles there is a valve called the atrioventricular valve, which controls the direction of blood flow. The atria are the upper part of the heart, one on the left and one on the left.

The walls of the atria are thin, and the main function of the stockings is to receive venous blood and send it into the ventricles. The inner part of the atria has small muscles called the atrial muscles, which contract to help send blood into the ventricles. The ventricles are the lower part of the heart, one on the left and one on the left.

The ventricles have thick walls and their main function is to push blood to all parts of the body. The ventricles have some large muscles inside called the ventricular muscles, and their contractions can create a powerful force that pushes blood throughout the body. The atrioventricular valve between the atria and ventricles is made up of two leaflets, the tricuspid and mitral valves.

The tricuspid valve is located between the right atrium and the right ventricle, and the mitral valve is located between the left atrium and the left ventricle. These two valves control the direction of blood flow and prevent blood from flowing backwards.