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15 Cards in this Set
- Front
- Back
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Funtions of Heart
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*Center of Cardiovascular System(CV)
*Connects to blood vessels, trasports between heart and other body tissues * Arteries- carry blood away from heart * Veins carry blood back to heart *Arteries-Carry blood in high oxygen(except for pulmonary arteries) *Veins-low oxygen(expect for pulmonary veins) Ateries and Veins entering and leaving the heart are called "gret vessels" |
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Characteristics and Functions of Heart
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*Ensures-Unidirectional flow through heart and Vessels
*Backflow of blood is prevented by valves of heart *Acts like two independent side by side pumps (double circuit) * One directs blood to lungs for gas exchange *the other directs blood to body tissues for nutrient delivery |
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Characteristics and Functions of Heart
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*Develops blood pressure through alternate cycles of heart wall contraction and relaxation
*Minnimal blood pressure is essential to push blood though vessels to the body tissue for nutirent exchange |
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Pulmonary and Systemic Circuits
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*Pulonary Circuit=right side of the heart(atrium and ventrical)...as well as pulmonary veins and arteries
-conveys blood to lung= pulmonary arteries -to reduce carbon dioxide and replenish oxygen levels of blood -blood returns to hear via pulonary veins |
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Pulmonary and Systemic Circuits
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left side= systemic.. blood returns to left side of heart
- Carries blood to peripheral organs and tissues og body |
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Pulmonary and Systemic Circuits
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*Oxygenated blood from left side pumped into AORTA(largest systemic artery)
AORTA--------> smaller systemic arteries *Capillaries= gas exchange in tissues *Systemic Veins- carry deoxygenated blood and waste products *Most veins merge and drain into the Superior and Inferior VENA CAVA (drain blood into right atrium) *There the blood enters the pulomnary circuit and cycle repeats |
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Anatomy of Heart
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* size of persos clenched fist
* Located left of body midline posterior to the sternum *Rotaed so that the right side is front(anterior) and left side is back(posterior) |
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Anatomy of Heart
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*Left atrium = Base
Inferior conical end is apex |
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Pericardium
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Fibrous,serus sac
*contains the heart *held in place by CT *restircts heart movement *prevents heart from overfilling w/blood |
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Pericardium
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*Outter portion= tough dense CT
*called fibrus perricardium *attached to both sternum and diaphram * Inner portion -thin double layer serus membrane -called serus pericardium *parietal layer * visceral layer |
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Funtions of Heart
|
*Center of Cardiovascular System(CV)
*Connects to blood vessels, trasports between heart and other body tissues * Arteries- carry blood away from heart * Veins carry blood back to heart *Arteries-Carry blood in high oxygen(except for pulmonary arteries) *Veins-low oxygen(expect for pulmonary veins) Ateries and Veins entering and leaving the heart are called "gret vessels" |
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Characteristics and Functions of Heart
|
*Ensures-Unidirectional flow through heart and Vessels
*Backflow of blood is prevented by valves of heart *Acts like two independent side by side pumps (double circuit) * One directs blood to lungs for gas exchange *the other directs blood to body tissues for nutrient delivery |
|
|
Characteristics and Functions of Heart
|
*Develops blood pressure through alternate cycles of heart wall contraction and relaxation
*Minnimal blood pressure is essential to push blood though vessels to the body tissue for nutirent exchange |
|
|
Pulmonary and Systemic Circuits
|
*Pulonary Circuit=right side of the heart(atrium and ventrical)...as well as pulmonary veins and arteries
-conveys blood to lung= pulmonary arteries -to reduce carbon dioxide and replenish oxygen levels of blood -blood returns to hear via pulonary veins |
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Pulmonary and Systemic Circuits
|
left side= systemic.. blood returns to left side of heart
- Carries blood to peripheral organs and tissues og body |
