The Vessel Wall: Arteries Flashcards
There are three layers to the Vessel wall. What is the name of the one that is closest to the blood aka most deep
Tunica interna (tunica intima)
The name of the vessel wall that in the middle of the 3 layers, being sandwhiched
Tuncia media
What is the outside of the 3 layers of the vessel walls
Tunica externa
The outside of the vessel wall is outgoing, facing adventure. What is another name for the tunica externa
Tunica adventitia
The inner layer of the vessel wall, tunica interna is made of what
Endothelium covering the basement membrane
The endothelium of the tunica interna is responsible for what
Secreting prostacyclin, ADP, seratonin (dilation control)
The endothelium of the tunica interna can cause leukocytes to
Congregate where defense is needed
The tunica media is responsible for dilation control. What is 3/4 of this layer made of
Smooth muscle
The smooth muscle of the tunica media provides
Structure and support
The tunica externa connects to other structures, so it has
Connective tissue
The vessel walls need blood. What is the vessels for the vessels that is found in the tunica adventitia
Vasa vasorum
The tunica media has two structures in the arteries that the vein does NOT have. What are they
Internal and external elastic lamnia
Why do the arteries have internal and external elastic lamina
To allow for stretching when the heart beats
Internal and external elastic lamina are mostly found in what specific artery
Conducting arteries
The three types of arteries are
Conducting, distributing, arteriole
The conducting arteries are closest to the heart. They have elastic lamina. They are buildt for
Taking pressure hits
The distributing arteries are for
Distributing blood to specifific organs
The distributing arties have a lot of
Smooth muscle
The resistance arteries are also called
Arterioles
What do the arterioles do
Control the AMOUNT of blood to organs
Arterioles control how MUCH blood. Because of this their walls have a LOT
Smooth muscle in the tunica media
If your body does not want blood at all to an area, what stops it from entering a capillary
A precapillary sphincter
A precapillary sphincter is made of
Muscle for contraction
