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Heart
Power Point 2
28
Anatomy
Undergraduate 2
03/24/2015

Additional Anatomy Flashcards

 


 

Cards

Term
3 layers in arteries and veins
Definition
Tunica externa or adventitia
Tunica media
Tunica Intima
Term
What kind of cell makes up Tunica externa?
Definition
Loose CT
Thickness varies with vessel size
Term
What kind of cells makes up Tunica media?
Definition
Smooth muscle (Constricts or dilates instead of pumping blood)
CT (Elastic in arteries, Loose in veins)
Term
What kind of cell makes up Tunica intima?
Definition
Simple squamous epithelium = endothelium
Only later in capillaries
Term
What are the exceptions to the artery and vein oxygenation rule?
Definition
Pulmonary and Fetal arteries and veins
Term
What are capillaries entered by?
Definition
Arterioles
Term
What are capillaries exited by?
Definition
Venuoles
Term
What is the Precapillary sphincter?
Definition
Smooth muscle around arteriole
Shunts
Term
Is the pressure greater inside a capillary or out?
Definition
Pressure is greater IN
Term
What recovers lost plasma from capillaries?
Definition
Lymph vessels
Term
What creates a pressure wave?
Definition
The heartbeat
Term
How is pressure maintained?
Definition
The elasticity of arterial walls
Term
What does the pressure wave do?
Definition
Keep blood moving in a forward direction
Term
Can you measure blood pressure (BP) in peripheral arteries?
Definition
Yes
Term
Does pressure drop as arterial size increases?
Definition
No, it drops as it decreases
Term
Is pressure higher in veins or capillaries?
Definition
Capillaries
Term
How does blood get back to the heart in veins?
Definition
Skeletal muscle contraction to move body
Smooth muscle contraction of internal organs
Valves prevent backflow
Respiration
Term
What do veins have that prevent the backflow of blood?
Definition
One-Way Valves
Term
What other thing also helps with blood movement?
Definition
Digestion because of the contractions in the muscles
Term
T or F: The Lymphatic System is part of the Circulatory System
Definition
True
Term
What does the Lymphatic System do?
Definition
Recover fluid, proteins
Term
What color is lymph?
Definition
Clear
Term
What are Lacteals?
Definition
Lymph vessels from intestine
Term
Where does the lymphatic system return to circulation
Definition
Cranial Vena Cava
Term
What is a Lymph node?
Definition
Group of nodules in specific places
Term
What are the functions of the Spleen?
Definition
Get rid of old RBC
Helps with immunity
Stores iron
Term
What is Edema
Definition
Excess interstitial fluid that causes swelling
Term
What can cause Edema?
Definition
Excess fluid lost at capillary beds
Blocked lymphatic vessels
Protein derangements in cells and interstitial fluids
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