1. transportation of gas 2. transportation of nutrients 3. transportation of hormones 4. transportation of waste 5. regulate blood pH 6. defend agains’t pathogens (wbc) 7. restrict blood loss though injury sites 8. stabilize body temperature
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blood composition
plasma (55%), plasma proteins, formed elements (45%)
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plasma (55%) components
non-cellular fluid matrix:
water, electrolytes, nutrients, metabolic waste
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plasma protein job
transport hormones and lipids, framework for clots
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formed elements in blood composition
red blood cells (99.99%)- O2/CO2 transport
white blood cells- immunological defense
platelets- cell-fragments that aid in clotting
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blood is recycled through __*___ & ____*__
kidney and liver
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anemia
lack of O2
\-low RBC
\-Low hemoglobin in RBC
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hematocrit
ratio of blood and plasma
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myocardium
cardiac muscles
\-thickness vary- muscle layer
\-atria and ventricles are separated with this
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endocardium
smooth slippery lining in heart
\-elastic with collagenous fibers
\-covers chambers and valves
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parietal pericardium
outside of visceral (parents are always watching over)
\-serous membrane that contributes to pericardial sac
\-reflects onto heart surface as visceral pericardium
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visceral pericardium
inside heart stuck to organs
\-serous membrane
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pericardial sac
mostly 2x layer
\-inner and outer layer fused
inner: parietal pericardium
outter: parietal pleura
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myocardium in depth
\-single nuclei
\-striated
\-branched
\- involuntary
\-intercalated disk (contracts)
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mediastinum
space between lungs that contains esophagus, trachea, great vessels, NAVLs of heart
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pericardial cavity
space between parietal and visceral pericardia
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pericarditis
inflammation of pericardia (sac builds pressure and bursts)
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cardiac tamponade
pericardial cavity fills with blood
* happens when coronary artery vessel pops and has no where to go
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artium
space in heart
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all venous blood drains to
Right atria
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right atrium contains
\-superior and inferior vena cava, coronary sinus, chordae tendineae
\-pectinate muscles: wall of auricular, job to anger valves