Cardio Histology Flashcards
Three types of capillaries and where are they found
- Continuous (common)
- Fenestrated (Intestines, kidneys)
- Sinusoidal (Spleen)
Artery/Vein Intima Composition
Endothelium and Connective tissue with Internal Elastic lamina
“An Intimate Connection”
Artery/Vein media composition
Smooth muscle with elastic fibers and External eleastic lamina
“Muscly Media”
Artery/Vein Adventitia composition
Connective tissue, blood vessels (Vaso vasorum), and nerves
Three distinguishing factors of Arteries
- Prominent Intima
- THICK media with elastin
- Diameter is nearly the same as the thickness
“Muscular well-rounded tube”
Four distinguishing factors of Veins
- Diminished Intima
- valves
- THICK adventitia
- Diameter is MUCH bigger than thickness
“Big ol’ flimsy tube”
Three types of Arteries with MEDIA layers
- Arteriole (1-5)
- Muscular/Distributing (6-40)
- Elastic (40-60)
Four types of Veins with 3 Distinguishing factors
- Collecting Venule: Thin everything, No Media, No lamina
- Muscular Venule: Thin everything, no lamina
- Small/medium: Valves, Thick adventitia, no media
- Large veins; Thick intima, Thick adventitia,Longitidunal smooth muscle bundles.
Two types of veins without Media?
Collecting Venules and Small veins
Type of vein with valves?
Small veins
Type of vein with longitudinal muscle bundles?
Large veins
Four types of microcirculation and example?
- A-C-V (General)
- A-V (skin)
- A-C-A (Kidney)
- V-C-V (Liver)
How to differentiate lympathics from veins?
Look for nucleated cells to point out lymphatics.
In muscular Arteries Ext. Elastic Lamina vs Int. Elastic Lamina
The External loops are tinier!
If you see both IEL and EEL, then you’re probably looking at ____
Muscular Arteries
If you see a buttload of Silly string in a vasculature slide, then you’re probably looking at ____
Elastic Arteries
