1) "normal" connection is via capillaries.
2) Portal systems (capillary bed to vein to capillary bed)
3) A-V shunts (most are in skin and are the cause of blushing. Some are malformations.)
Thee difference between muscle in veins and arteries is that muscles of arteries are thicker compared to those of veins.
Telangiectasias-- Very small arteriovenous malformations, or connections between the arteries and veins. The result is small red spots on the skin known as "spider veins."
Veins do not pulsate Arteries pulsate Veins can easily collapse Arteries do not collapse (except in shock) Veins contain valves Blood pressure is low in the veins and higher in the arteries
Arteries carry blood away from the heart. Veins return blood to the heart.
Capillaries are bridges between the arterys and veins
the little tubes that carries blood between the arteries and veins are call capallaries is capillary
Veins, capillaries and arteries is that they are all stops for blood.
Tunica adventitia is poorly developed in arteries then in veins
Structurally, veins and arteries are very similar. The main differences is that veins move blood towards the heart, whereas arteries move blood away from the heart.
In a frog's circulatory system, the connection between arteries and veins is made through small blood vessels called capillaries. These capillaries allow for the exchange of oxygen and nutrients between the arteries and veins.
Capillaries.
Arteries, capillaries, and veins. Arteries take blood away from the heart. Veins return blood to the heart. Capillaries are between the arteries and veins and supply the cells with oxygen and nutrients.