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3 years ago

Which of the following events occur at the start of diastolic production of first heart sounds S1

1 answer:

6 0

Answer: Ok Diastole commences with the closure of the aortic and pulmonary valves. Intraventricular pressure falls but there is very little increase in ventricular volume (isovolumetric relaxation). Once ventricular pressure falls below atrial pressure, the mitral and tricuspid valves open and ventricular filling begins.The first heart sound (S1) is produced by vibrations generated by closure of the mitral (M1) and tricuspid valves (T1). It corresponds to the end of diastole and beginning of ventricular systole and precedes the upstroke of carotid pulsation.

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Explanation:

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3 years ago

Read 2 more answers

Which two other systems of the body is the lymphatic system most involved with? Check all that apply. circulatory system immune

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Answer:

The answers are circulatory system and immune system.

Explanation:

In order to know more about the answer, it is best to learn what a lymphatic system is.

Lymphatic System- This is also known as "lymphoid system." It functions as a part of the body's circulatory and immune system. It consists of lymphatic vessels, lymphatic organs and the lymph.

Lymphatic Vessels- These are thin-walled vessels that carry the lymphatic capillaries. The lymphatic organs include the tonsils, adenoid, spleen and thymus. 

The Function of Lymphatic Vessel

- It functions to transport the "lymph," a clear, colorless fluid which contains the white blood cells (these are also called leukocytes).This transportation function explains the lymphatic system being involved with the circulatory system in the body.

Circulatory System- This is the system in the body is responsible for blood flow, oxygen, nutrients and hormones. It also involves removing unwanted things, such as waste products in the body.

The Function of the Spleen

The spleen is one of the lymphatic organs that has an important role. Once it detects an invader in the body's blood such as virus or bacteria, it starts producing white blood cells. These are also known as "leukocytes."

The white blood cells help the body fight infection and other foreign invaders. This clearly explains the lymphatic system being involved with the immune system in the body.

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3 years ago