The Incredible Pump

Your Heart Anatomy

Terms

• Artery • Atria • Diastole • Systole • Automatism • Capillary • Electrical conduction • Vein • EKG/ECG • Intercostal space ( ICS) • Leads • Ventricles

The heart

• Hollow muscle • Size of your fist• Beats

– 100,000 x/day – 2000 gallons of blood

• Location:– diagonally in mediastinum – B/T lungs

• Base: top of heart2nd rib • Apex bottom of heart at diaphragm • PMI (point of maximal impulse) 5th ICS-mid-clavicular

Heart Anatomy

• Layers:– pericardium – myocardium – endocardium

• Septum- divides heart into Right and Left • 4 chambers:– R atrium – L atrium – R ventricle – L ventricle

Layers of the heart

pericardium myocardium

Endocardium View of all layers

Chambers of the heart

Valves of the Heart

• AV (atrio-ventricular )1. Tricuspid: b/t RA and RV 2. Mitral ( bicuspid)- b/t LA and LV

• Semilunar valves: 1. pulmonic: RV and lungs 2. aortic- LV and aorta

Function of the Heart

• Pump 02 from left side to organs & tissues • Pump deoxygenated blood from right side

to lungs • Diastole: ventricles resting/ filling with

blood • Systole: ventricles pumping blood to body • Record: s/d

Vascular System

• Arteries– carry blood away from heart – carry oxygenated blood except pulmonary artery

• Veins– carry blood to heart – carry deoxygenated blood except pulmonary vein

• Capillaries– network of small vessels where 02 and CO 2 are

exchanged

Blood FlowSuperior Vena CavaInferior Vena Cava → Blue

↓Right atrium → Blue

↓Tricuspid Valve → Blue

↓Right Ventricle → Blue

↓Pulmonary Valve→ Blue

↓Pulmonary Artery → Blue

↓

Lungs→ Red↓

Pulmonary Vein → Red↓

Left atrium → Red↓

Mitral (Bicuspid) Valve → Red↓

Left Ventricle → Red↓

Aortic Valve → Red↓

Aorta → Red↓

Body