Blood Vessels Flashcards
What are the layers of blood vessels from the innermost layer to the outermost layer?
- Tunica Intima
- Tunica Media
- Tunica Externa
The tunica intima is made up of what structures?
- Endothelium
- Connective tissue
- Internal Limiting membrane
Endothelium is made up of what tissue?
Simple squamous epithelium.
The tunica media is made up of what stuctures?
- Smooth muscle and elastic fibers (ratio varies)
2. External limiting membrane.
Smooth muscle and elastic fibers in blood vessels are used for what purpose?
Contraction of blood vessels
The tunica externa is made up of what structures?
- Connective tissue
- Vasa Vasorum
- Nervi Vasorum
What are the vasa vasorum in the tunica externa of blood vessels?
Blood vessels in the wall of the blood vessel.
Nervi vasorum in the tunica externa serve what purpose?
nerve supply for the blood vessels.
In comparing the aorta and the vena cava, what are some differences between the two structures?
- The Tunica media in the aorta is much thicker than in the vena cava.
- The tunica adventicia (or tunica externa) in the vena cava is thicker than in the aorta.
- There is much more smooth muscle in the aorta than in the vena cava.
These types of blood vessels carry blood away from the heart.
Arteries
There are two types of arteries, what are they?
Elastic arteries and muscular arteries.
These blood vessels deliver blood to capillaries..
Arterioles
These blood vessels microscopic vessels that connect arterioles to venules.
Capillaries.
These blood vessels collect blood from capillaries and drain into veins.
Venules
These blood vessels carry blood towards the heart.
Veins
These veins usually travel alongside an artery and usually carry the same name as the accompanying artery.
Deep Veins
These veins lie just below the skin in the hyperdermis.
Superficial veins
These blood vessels are dialated channels for venous blood.
Venous (Vascular) Sinuses
This maneuver involves forced exhalation against a closed airway (like when you’re trying to pop your ears) and causes the external jugular vein to swell and pop up.
Valsava’s Maneuver
Blood has trouble getting from the left side of the body to the right side of the heart. This system acts as a left to right shunt which feeds into the superior vena cava.
The azygos (vein) system.
