Cardiovascular System
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4 main components of the cardiovascular system
heart, blood vessels, blood, lymphatic system
What side of the heart is the pulmonary system?
Right - recieves oxygen-poor blood tissues Pumps blood to lungs to get rid of CO2 and pick O2
What side of the the heart is the systemic system?
Left - receieves oxygenated blood FROM lungs Pumps blood to the body tissues also known as systematic
What is blood composed of?
Plasma, erythrocytes, leukocytes, platelets
Plasma
Straw colored watery substance that other blood components float in
Erythrocytes
red blood cells
Leukocytes
White blood cells
Platelets
Cells that form blood clots
Hemoglobin
Protein of rbc that carries oxygen
What do lymphatic capillaries do?
Absorb excess tissue fluid and blood plasma
What does the lymph system do?
Collects and filters lymph fluid, making plasma and returning ti to the cardiovascular system.
What are lymphocytes?
Disease fighting wbc, killing pathogens in lymph fluid
Right atrium
Receives blood RETURNING FROM SYSTEMATIC CIRCUT
Left Atrium
Recieves blood from RETURNING FROM POLUMARY CIRCUT
Left Ventricle
Pumps blood THROUGH SYSTEMATIC
Right Ventricle
Pumps blood THROUGH Pulmonary Circut
Size of heart
Fist and weighs 1 pound
Location of Heart
Mediastinum between second rib and fifth intercostal space Superor of diaphram
Pericardium
Doubled walled sac that surrounds the heart: made up of two layers
Deep Two Layered serous pericardium
Paretial Layers Visceral Layer
Paretial Layer
lines internal surface of fibrous pericardium
Visceral Layer (epicardium)
external surface of heart
Epidcardium
Visceral layer of serious pericardium
Myocardium
circular bundles of contractile cardiac muscle cells