because they have a long tissues that the blood flows
A Closed Circulatory system-Is a blood circulation system in which blood moves through the body in closed vessels. In the closed circulatory system, the blood is confined to vessels. The heart pumps blood to vessels through smaller vessels which go to the organs. This system has a more efficient way of transporting blood then an open circulatory system. Some animals that have this systems include earthworms, squids, octopus, and all vertebrates, like humans.
Closed- AmandaLG
The circulatory system consists of the heart, blood vessels, and blood. The heart pumps blood through the vessels to deliver oxygen and nutrients to the body's tissues and organs. Blood vessels, including arteries, veins, and capillaries, help transport blood throughout the body. The blood carries oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs for removal.
This type of circulatory system is known as an open circulatory system. In this system, blood is not confined to vessels and instead flows freely to bathe tissues directly. This system is typically found in invertebrates such as insects and some mollusks.
The main parts of the circulatory system are the heart, blood, and blood vessels. it's main function is to carry oxygen, nutrients, and wastes to and from the body tissues.
The main function of the circulatory system is to carry oxygen, nutrients and wastes to and from the body tissues. Its main organs are the heart and blood vessels.
Exchange vessels are specialized structures within the body that allow for the exchange of gases, nutrients, and waste products between different body compartments. Examples include capillaries in the circulatory system, alveoli in the respiratory system, and nephrons in the renal system. These vessels play a crucial role in maintaining homeostasis and delivering essential molecules to tissues.
The main types of circulatory systems are open and closed. In an open circulatory system, blood is pumped into an open cavity where it directly bathes the organs. In a closed circulatory system, blood is contained within vessels and is pumped by the heart to reach tissues throughout the body.
Two many functions of the circulatory system are the movement of nutrients and oxygen to the tissues, and movement of wastes from the tissues to the excretory system. The main organs are the heart and blood vessels.
The smallest part of the circulatory system is the capillary. Capillaries are tiny, thin blood vessels that allow for the exchange of oxygen, nutrients, and waste products between the blood and tissues in the body.
Arthropods have an open circulatory system, with organs in the internal body cavity (hemocoel) and cells bathed in hemolymph. The fluid drains into open pores for recirculation usually by a dorsal tube acting in the role of a heart. Not all arthropods use hemolymph for oxygenation; insects for example oxygenate tissues directly via tubules connected through vents (spiracles) to the atmosphere.
The circulatory system consists of the heart and blood vessels.