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Mod D unit 1 lecture
lecture Mod D week 1
Question | Answer |
---|---|
How many gallons of blood does the heart pump daily? | 4,000 |
the heart is divided into right & left halves by the | Septum |
How many cambers does the heart have? | 4 |
how much does the heart weigh? | 300g/1 pound |
how many miles of blood vessels do we have? | 70 miles |
How many times a day does your heart beat? | 100,000 |
Your heart has 3 layers, what are they? | Endocardium, Myocardium, Pericardium |
what is the inner lining of the heart? | Endocardium |
what is the middle, muscular layer called? | Myocardium |
The outer sac of the heart is called? | Pericardium |
The pericardium has how many layers? | 2, Parietal: lines the surface of the pericardial cavity. and the Visceral(epicdium) covers the hearts outer surface |
What collects the most venous blood from below the diaphragm, and also receives blood from the head, neck & upper limbs? | Inferior Vena Cava |
Arteries | Vessels that LEAD AWAY from the heart and carry OXYGENATED blood |
veins | they move deoxygenated blood toward the heart from the tissues; they have valves that prevent the backflow of blood |
capillaries | smallest vessels |
what carries oxygen & nutrients? | The circulatory system |
Pulmonary circulation | is the passage of deoxygenated blood to the lungs and back to the heart |