Heart (muscular organ)

Capillaries (the place where blood and tissue fluid exchange substances)

Arteries (carry blood to centrifuge)

Veins (carry blood back to the heart)

Systemic circulation (large circulation)

Pulmonary circulation (small circulation)

inter-arterial anastomosis

intervenous anastomosis

arteriovenous anastomosis

side branch anastomosis

Heart position (2/3 to the left of the midline of the body, 1/3 to the right of the midline)

The shape of the heart (the shape of the heart is like an inverted cone with slightly flattened front and back)

right atrium

right ventricle

left atrium

left ventricle

Cardiac fibrous skeleton (left fibrous triangle, right fibrous triangle, four valve annulus, ventricular septum)

Heart wall structure

atrial septum and interventricular septum

sinoatrial node

ending

atrioventricular node

atrioventricular bundle

Left bundle branch, right bundle branch and Purkinje fiber network

arteries of heart

cardiac veins (veins in the walls of the heart Finally, most of it merges into the coronary sinus, then injected into the right atrium)

fibrous pericardium

Serosal pericardium

pericardial sinus, transverse pericardial sinus, oblique pericardial sinus, anterior inferior pericardial sinus

The upper left point is the lower edge of the left second costal cartilage, about 1.2cm from the left edge of the sternum.

The upper right point is the upper edge of the right third costal cartilage, 1cm from the right edge of the sternum.

Lower left point, left fifth intercostal space, 1~2cm medial to the left midclavicular line.

The lower right point is at the sixth sternocostal joint on the right side.

Veins start from capillaries

venous valve

Systemic circulation is divided into superficial veins and deep veins

Venous anastomoses are relatively abundant

Specially structured veins

Pulmonary circulation

systemic circulation

pulmonary circulation arteries

systemic arteries

pulmonary trunk

aorta (ascending aorta, Descending aorta, aortic arch)

Common carotid artery compression and hemostasis

Common facial artery compression and hemostasis

Superficial temporal artery compression and hemostasis

Subclavian artery compression to stop bleeding

Brachial artery compression and hemostasis

Compression of radial artery and ulnar artery to stop bleeding

Compression of the proper palmar artery to stop bleeding

Compression and hemostasis of the femoral artery Compression and hemostasis of the dorsalis pedis artery

composition

Function

Lymphatic capillaries

Lymphatic vessels

Lymph trunk

lymphatic duct

Lymph nodes

spleen

Thymus

Lymphatic vessels and lymph nodes of the head and neck

Lymphatic vessels and lymph nodes of the upper limbs

Lymphatic vessels and lymph nodes in the chest

Lymphatic vessels and lymph nodes in the abdomen

Lymphatic vessels and lymph nodes in the pelvis

Lymphatic vessels and lymph nodes of the lower limbs