The flashcards below were created by user
Anonymous
on FreezingBlue Flashcards.
-
What does the human cardiovascular system, a fluid transport syst, consist of?
The heart, all of the body's blood vessels, the blood, and the bone marrow tissue in which red blood cell are formed.
-
What are the functions of the Heart and blood?
To pump blood for heart and blood is the fluid transport medium.
-
What substances are transported?
Oxygen, carbon dioxide, nutrients, vitamins, hormones, waste products, and immune system cells and proteins along with heat to body's core and extremities.
-
cardiovascular system is integral to which systems and for what?
- Respiratory System (oxygen and carbon dioxide transport)
- Digestive System (nutrient and waste product transport)
- Endocrine System (hormone transport)
- Excretory System (blood filtering)
-
What is the function of pulmonary circulation?
- blood circulates heart and lungs with reult that blood is oxygenated
- Also managed by right side of the heart.
-
What is function of systemic circulation?
- Blood circulates between the heart and rest of body
- Managed by left side of heart
-
what are step in pulmonary circulation?
Blood returens to heart entering right atirum.>enters right ventricle>blood is pumped from here to lungs> blood returns to left atrium from lungs
-
What are the steps in systemic circulation?
blood returns to left atrium from lungs>blood enters left ventricle>blood is pumped from left ventricle to body> blood returns to heart from body, enters right atrium
-
Heart has 4 muscular chambers:
- top two atria
- bottom two ventricles
- (right atrium and ventricle pulmonary oxigenation)
- (left atrium and ventricle systemic circulation delivery oxygented blood to body)
-
Which vessels carry blood away from heart:
arteries and arteioles (systemic circuit, arteries carry oxygenated blood and veins carry deoxygenated blood)
-
Which vessels carry blood toward heart:
- venules and veins
- ◦In the pulmonary circuit, arteries carry deoxygenated blood and veins carry oxygenated blood
-
What are capallaries?
The smallest vessels site of gas, thermal, molecule exchange. All action occurs here
-
Explain shape of vessels.
- thick, elastic, muscular walls.
- Elasticity important in maintaing blood pressure and volume
-
Why is inelasticity bad?
- increases blood pressure and velocity (factor for stroke, heart attacks,heart failure, aneurysms, and is a cause of chronic kidney disease).
- Also makes exchanges at capallaries less efficient
-
Explain function of Capillary beds.
- capillary beds feed back into the body’s system of veins that returns blood to the heart.
- Arteries near the heart branch intosmaller arterioles, which feed into the delivery vehicles of the cardiovascularsystem
-
When materials needed for body tissues move out of capillaries where do they go?
- into the interstitial fluid that surrounds both the capillaries and nearby cells after which the materials move into cells.
- Simulatneously having CO2 and wastes move from cells into the capillaries.
-
How is blood flow regulated in capillary beds?
By precapillary sphincters as wells as thoroughfare channels that allow direct flow of blood
-
Venules and veins are thin-walled why?
Blood pressure is zero, so flow is aided by skeletal muscles contracting to squeeze blood to heart. Contain valves to prevent backflow.
|
|