CIRCULATORY SYSTEM TWO CIRCUITS PULMONARY CIRCUIT – BLOOD TRAVELS

CIRCULATORY RAP LYRICS CHORUS TAKING BLOOD FROM THE
CIRCULATORY SYSTEM TWO CIRCUITS PULMONARY CIRCUIT – BLOOD TRAVELS
MEASURING AND RECORDING BLOOD PRESSURE 1 THE CIRCULATORY SYSTEM

OXYGEN TRANSPORT CIRCULATORY SYSTEM FUNCTIONS TO DELIVER


Circulatory System

Circulatory System


Two circuits:

Pulmonary circuit – blood travels from heart to lungs back to heart

Systemic circuit – blood travels from heart to body back to heart



Heart and its major vessels:

4 chambers – Right atrium, right ventricle, left atrium, left ventricle


Right atrium:


Superior vena cava


Inferior vena cava


Coronary Sinus


Right ventricle:


Ventricular Contraction


Blood leaves right ventricle to lungs via the Pulmonary Trunk


Pulmonary Trunk:


Oxygen rich blood leaves lungs to left atrium via Pulmonary Veins


Left Atrium


Left Ventricle


Blood leaves left ventricle to body via the Aorta


Aorta and its branches:


Ascending aorta


Right Coronary arteries


Left Coronary arteries

Aortic Arch


Brachiocephalic Trunk

- from aortic arch

- right common carotid branches from it

- right common carotid divides into right internal and external carotid arteries

- carotid arteries feeds neck and cranium region


- brachiocephalic trunk is now called right subclavian artery


Right Subclavian arteries

- from brachiocephalic trunk

- thyrocervical trunk provides blood to neck, shoulder and upper back

- internal thoracic artery provides blood to rib cage

- vertebral artery provides blood to brain and spinal cord


- right subclavian artery passes under clavicle and is called right axillary artery


- right axillary artery descends right upper arm and becomes right brachial artery (around the area that T. major inserts on humerus)



Left common carotid


Left subclavian arteries

left subclavian artery passes under clavicle and is called left axillary artery



Descending Aorta


- divided by the diaphragm into abdominal and thoracic descending aorta


Unpaired:

celiac trunk



superior mesenteric artery


inferior mesentery artery



Paired arteries:

renal arteries


Gonadal arteries




Common iliac arteries


branches of common iliac arteries:


branches of femoral artery:


branches of popliteal artery:





INUTERO BYPASSES (in embryo):

To divert more blood to placenta for oxygen (instead of lungs)

  1. Foramen ovales – hole between right and left atria; at birth becomes fossa ovales

  2. ductus arteriosus – canal between pulmonary trunk and aorta; at birth becomes ligamentum arteriosum





Blood returning to heart via veins:


Veins of the lower leg, anterior thigh and pelvic region

* each of these have a right and left side


Great saphenous vein – longest vein in body and returns blood from leg region

anterior tibial vein – goes between tibia and fibula to branch into posterior tibial vein; brings blood from anterior lower leg


posterior tibial vein – drains blood from posterior lower leg; becomes popliteal vein when coursing in popliteal region (posterior side)


popliteal vein – travels through adductor hiatus and becomes deep femoral vein (anterior thigh region)


Deep femoral vein – drains into femoral vein on anterior side


Great saphenous vein – drains into femoral vein on anterior side


Femoral vein – receives blood from great saphenous vein and deep femoral vein; located in thigh region; drains into the external iliac veins


External Iliac veins – femoral vein becomes external iliac veins in pelvic region


Internal Iliac veins – drain into external iliac veins to become common iliac veins


Common Iliac veins – internal iliac veins joins external iliac veins and becomes common iliac vein; right and left side join together to drain into inferior vena cava



Inferior Vena Cava – Common Iliac veins from right and left lower limb form together and begin the inferior Vena Cava


Tributaries entering Inferior Vena Cava:




**Veins do not drain directly from digestive tract (eg. intestines, stomach) – they go through liver first via hepatic portal vein and then enter IVC via hepatic veins**




Tributaries entering Superior Vena Cava:






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