What are the components of the vasculature?

What does the vasculature consist of

The tissues that make up the walls of blood vessels and lymphatic vessels are mainly endothelium, smooth muscle and connective tissue.

The cardiovascular system is composed of large arteries, small and medium-sized arteries, capillaries, small veins, medium veins, and large veins that connect to the heart. It transports blood, oxygen, nutrients, hormones, antibodies and other substances.

The lymphatic system consists of capillary lymphatic vessels, small lymphatic vessels, medium lymphatic vessels, large lymphatic vessels, and enters the vena cava. It introduces lymph, lymphocytes and antibodies into the blood circulation, plays an important immune role, and is an auxiliary channel for the vascular system. . The vasculature plays an important role in the growth, development, metabolism, and functional activities of all tissues and organs throughout the body.

Extended information:

Circulating pipes have a common structural pattern, with the pipe walls organized into concentric layers. Due to different local factors and metabolic needs of the human body, certain tissues in the pipelines at all levels may increase, decrease, or disappear. The walls of most pipes are usually divided into three layers, arranged sequentially from the luminal surface outward.

Intima: The endothelium lining the cavity surface is surrounded by connective tissue. The subendothelial layer of some blood vessels also has an internal elastic membrane.

2. The tunica media: formed from smooth muscle, elastic fibers and elastic membrane; the tunica media of the heart is the thickest, mainly formed from the myocardium and connective tissue;

3. Adventitia: It is composed of connective tissue and contains nutrient blood vessels, lymphatic vessels and nerves.

Reference source: Sogou Encyclopedia - Vascular System

Composition of Vascular System

Go to the library to view the complete content>

Content comes from user: Gao Renfu

Part 3 Vascular System

Vascular system Angiology consists of continuous and closed tubes that perform transport functions in the human body, including the cardiovascular system and lymphatic system. The cardiovascular system consists of the heart and blood vessels, in which blood circulates; the lymphatic system consists of lymphatic channels, lymphoid tissues and lymphoid organs. Lymph flows centripetally along the lymphatic channels, passes through several levels of lymph nodes, and finally injects into veins and merges into the blood. cycle. Lymphatic vessels are therefore often viewed as auxiliary vessels to veins. In addition, lymphoid tissues and lymphoid organs also have important immune functions.

The main function of the vasculature system is to transport nutrients to various organs and tissues throughout the body for tissue metabolism needs, and at the same time, transport metabolic products of various organs and tissues throughout the body, such as CO2, urea, etc., to the excretory organs for elimination from the body. Through blood circulation, material exchange with various organs and tissues of the body can be completed, and chemical information transmission of hormones acting on target organs and target cells at a long distance can be realized to regulate the body's body fluids. Therefore, the vasculature plays an important role in maintaining metabolism, the relative stability of the body's internal and external environment, and realizing the body's immune function. Research shows that the vasculature can also secrete a variety of hormones and bioactive substances, participating in the regulation of various functions of the body.

Chapter 1 Cardiovascular System

Section 1 Overview

1. Composition of cardiovascular system

The cardiovascular system consists of the heart, arteries, capillaries and veins.

The heart is a hollow muscular organ, mainly composed of myocardium. The heart can be divided into four chambers: left atrium, right atrium, left ventricle, and right ventricle. The ventricles are connected to arteries, and the atria are connected to veins. The heart plays the role of a "pump" in blood circulation, driving blood to flow within blood vessels through the contraction and relaxation of the myocardium. 2. Blood circulation route The posteromedial wall of the right atrium of the heart is (3) Left atrium 4. Structure of the heart (1) Sinoatrial node 6. Blood vessels of the heart 2 (2) Serosal pericardium

The above is the detailed content of What are the components of the vasculature?. For more information, please follow other related articles on the PHP Chinese website!