i am not sure but need to know for a project today
Its venules
The circulatory system includes three major vessels. These are capillaries, arteries and veins. Arterioles and venules are part of the vessels as well.
Venules are located at the convergence of capillaries, where they receive blood that has been oxygen-depleted and are responsible for carrying it to larger veins. They are part of the circulatory system and play a key role in the transportation of blood back to the heart.
Most of the volume of blood in the circulatory system is located in the veins and venules. These blood vessels act as reservoirs, holding the majority of the body's blood volume and allowing for regulation of blood pressure and distribution of blood to tissues.
Blood normally flows from the capillaries directly to the venules, which are small blood vessels that connect the capillaries to the larger veins in the circulatory system.
Capillaries are the smallest kind of blood vessels in the circulatory system. They connect arterioles and venules and facilitate the exchange of gases, nutrients, and waste products between the blood and tissues.
closed circulatory system (double circulatory system)
They're both the circulatory system.
Amphibians have closed circulatory system Closed
The circulatory system
Venules are small blood vessels that collect deoxygenated blood from capillaries and transport it to veins. They have thin walls composed of endothelium and a small amount of smooth muscle and connective tissue, allowing for some exchange of fluids and immune cells. Venules typically have a larger diameter than capillaries, facilitating the return of blood to the circulatory system. They also play a role in regulating blood flow and pressure within the microcirculation.
open circulatory systemclosed circulatory system.