Blood Vessles Flashcards
Fully functional organs
Blood vessels
Take blood away from heart
Arterioles
Branch into smaller
Arterioles
Directly service tissues
Capillary beds
Collect blood
Venues
Pool bloood and draw it back to heart
Veins
Away from heart
Artery
Back to the heart
Veins
Space inside any tube in anatomy
Lumen
Form a tight waterproofish layers to stop spilllage of plasma or hemocytes
Endothelial cells
Shrink cells
Vasoconstriction
Relax cells
Vasodilation
Controlled by neves in autonomic NS and some cells signal related to inflammation and clotting
Tunica media
Collagen fibers have maintain rigidity
Tunica externa
Elastic fibers provide some capacity to stretch
Tunica externa
Houses vessels on vessels- vasa Vasorum
Tunica externa
All tissues needs serviced by blood vessels and at higher distance simple diffusion is not enough
Tunica externa
Include the aorta and it’s major branches
Elastic arteries
Thicker walls with elastin fibers spread thoghout all layers
Elastic arteries
Smooth muscle is not involved in Vasoconstriction
Elastic arteries
All tunica present arterioles but lose externa and all but single layers of media is the smallest
Arterioles
Small network of vessels
Cappillaries