Cardiovascular System & Blood Chapters 8 & 7. Cardiovascular system parts.

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Presentation transcript:

Cardiovascular System & Blood Chapters 8 & 7

Cardiovascular system parts

Functions of cardiovascular system

Cardiovascular system: heart

What is the purpose of the heart valves?

AV valves

Double circuits – pulmonary – systemic

Flow of blood thru human circ sys. R ventricle (pulmonary circuit) pulmonary arteries lung capillaries pulmonary veins L atrium L ventricle (systemic circuit) aorta (branches) – coronary arteries, upper & lower body body capillaries vena cava (superior or inferior) R atrium R ventricle

Electrical activity of the heart the cardiac conduction system 1. sinoatrial (SA) node 2. AP reaches atrioventricular (AV) node

Electrical activity of the heart 3. AP enters atrioventricular (AV) bundle & branches 4. AP reaches Purkinje fibers

Conduction system of the heart

Electrocardiogram (ECG/EKG) P wave: QRS complex: T wave:

Cardiac cycle the repeating pattern of contraction & relaxation of the heart – systole: – diastole:

Cardiac output determined by stroke volume... and heart rate

Cardiovascular system: blood vessels arteries veins capillaries

Cardiovascular system: blood vessels arteries

Cardiovascular system: blood vessels veins

Cardiovascular system: blood vessels capillaries

More on capillaries... interstitial fluid:

Comparison of blood vessels

BP decreases in BV the farther from the heart... arteries  veins

Blood pressure two parts to a blood pressure reading – systolic pressure – diastolic pressure

High & low blood pressure High BP (hypertension) Low BP (hypotension)

Regulation of blood volume

Regulation of blood volume by kidneys

Cardiovascular disease all diseases of the heart and blood vessels

“Bad” & “Good” cholesterol “bad” cholesterol is LDL (low-density lipoprotein) “good” cholesterol is HDL (high-density lipoprotein)

Cardiovascular system: blood plasma ~ 55% formed elements ~ 45%

Cardiovascular system: plasma proteins albumins ~ 54% globulins ~ 38% fibrinogen ~7%

Hemopoiesis: blood cell formation

Hemopoiesis

Hemostasis: blood clotting

Injured blood vessel:

Red blood cell antigens & blood typing antigens:

Red blood cell antigens & blood typing antibodies

Antigens & antibodies of human blood types

Blood type & transfusions

Red blood cell antigens & blood typing Rh factor

Hemolytic disease of newborn (HDN)

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