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15 Cards in this Set

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  • Back
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"
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
Pulmonary and Systemic Circuits
left side= systemic.. blood returns to left side of heart

- Carries blood to peripheral organs and tissues og body
Pulmonary and Systemic Circuits
*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
Anatomy of Heart
* 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)
Anatomy of Heart
*Left atrium = Base

Inferior conical end is apex
Pericardium
Fibrous,serus sac
*contains the heart
*held in place by CT
*restircts heart movement
*prevents heart from overfilling w/blood
Pericardium
*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
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"
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
Pulmonary and Systemic Circuits
left side= systemic.. blood returns to left side of heart

- Carries blood to peripheral organs and tissues og body