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All vertebratescirculate blood within blood vessels. Because blood is enclosed within blood vessels, the circulatory systems of vertebrates are called closed circulatory systems. Some animals without vertebrae, called invertebrates, have circulatory systems that do not contain blood vessels. In these open circulatory systems, the fluid analogous to blood is called hemolymph (Greek, hemo, blood + lympha, water). Examples of animals that circulate hemolymph include insectsand aquatic arthropodssuch as lobstersand crawfish. Like blood, hemolymph transports oxygen and carbondioxide and has a limited clotting ability. Unlike blood, hemolymph is colorless. Other invertebrates have no true circulatory system. In these animals, it is not possible to distinguish blood or hemolymph from the watery fluid that bathes the tissues. This fluid contains a few defensive cells, proteins, and salts. However, oxygen and carbon dioxide are not transported in this fluid.
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Why is hemolymph not considered blood?
because hemolymph does not carry oxygen
What is a mollusks circulatory fluid called?
Hemolymph
What is the internal body fluid of an insect?
Hemolymph.
What is the organ which cleans a mollusks hemolymph?
nephridia
How does blood circulate in most mollusks?
* Oxygenated hemolymph (blood), coming from ctenidia, flows into heart's atria, * then it flows into heart's ventricle, which pumps the hemolymph into arteries, * from arteries, hemolymph flows into the hemocoel; * then it's caught again inside veins and brought directly into afferent ctenidial vessels or into accessory branchial hearts, which pump it inside ctenidia again, for oxygenation. Hemolymph flows also into the pericardium, the celomatic membrane wich contains the systemic heart, and, from it, hemolymph reaches and flows into the excretory ducts.
What removes uric acid and salts from the hemolymph?
it is dissolved in water
What is the difference between a coelom and a hemocoel?
Hemolymph is comparable to blood in a closed circulatory system. In open circulatory systems, hemolymph is propelled by a heart through short arteries and into spaces called sinuses surrounding tissues and organs. Hemolymph reenters the heart through pores that are usually equipped with valves. Hemocoel refers to the collective hemolymph-filled body sinuses. The coelom is not the same as the hemocoel, and is usually very reduced in development after the embryo stage. The hemocoel becomes the main body cavity in adults.
How do insects overcome the inefficiency of their hemolymph flow in taking oxygen to their tissues?
Hemolymph is a fluid in the circulatory system of arthropods (e.g. spiders) and is analgeous to the fluids and cells making up both blood and intestinal fluid.
What is a heamocoel?
The body cavity in between organs whereby the hemolymph circulates through
Do snail drink blood?
They have hemolymph. It corresponds to blood :)
What are kidney like organs which clean a mollusks hemolymph?
nephridia c for plato uses. -RayRay
What is the circulatory system of the ladybug?
fist of all it is known as an 'open' circulatory system.. that means the circulatory fluid (hemolymph) is not contained in vessels. insects have a dorsal vessel with a sort of heart (but is not like that of mammals). insects only transport nutrients and waste and NOT oxygen. for this reason, their circulatory fluid, hemoplymph, is greenish in colour. the cavity in which the hemolymph opens is known as the haemoceal. hemplymph passes into the haemoceal through openings called ostia (sing. ostium)
