Describe the common features that determine whysome invertebrates, such as sponges, cnidarians, andflatworms, do not require a circulatory system.

Q: Three-chambered hearts with incomplete septa wereonce viewed as being less adapted to circulatory…

A: Heart if found in vertebrates having backbone. It is a muscular organ that pumps blood through blood…

Q: Follow the passage of hemolymph in the insect circulatory system. Explain how the body's natural…

A: Hemolymph: it is found in insects as blood, but it is color less. Hemolymph consists of about 90…

Q: What are the two types ofcirculatory systems?

A: The circulatory system is responsible for the transport of substances throughout the body. The…

Q: In arthropods why isn't gas exchange done through cutaneous diffusion?

A: Arthropods are the invertebrates that form one of the largest groups of phylum in the animal…

Q: Beings from four phyla ofthe animal kingdom “breath”(do gas exchange) bydiffusion. Which are…

A: Invertebrates are animals having no backbone. They are the most widespread animal on earth. Examples…

Q: How are the circulatory systems of animals classified?

A: Circulatory system conducts a lot of work. The major functions of the circulatory system are as…

Q: What are the typical components of a closed circulatory system?

A: Closed circulatory system: is found in vertebrates and a few invertebrates like earthworms. This…

Q: Mention components of the circulatory system. Differentiate between artery and vein.

A: Circulatory system consist of three components which are independent : Heart(cardiovascular)…

Q: Explain why a matured mammalian erythrocyte lacks nucleus and mitochondria.

A: Mammalian erythrocytes are generated through erythropoiesis from multipotent hematopoietic stem…

Q: List the major structures of all circulatory systems and thespecific functions of vertebrate…

A: The main function of the circulatory system is to efficiently circulate blood, nutrients, and…

Q: Why do the cardiac muscles cells demonstrateautorhythmicity?

A: Autorhythmicity is a property of specialized cardiac cells called pace maker cells that directly…

Q: Describe, in humans, what becomes of the six pairs of aortic arches typical of vertebrate embryos?

A: Introduction :- In the embryo aortic arches develop in association with each of the developing…

Q: Fish, like all invertebrates have a single circulatory systems circulatory a) explain why single…

A: Single circulatory system : It occurs in fish . In this system blood travels from heart to gills ,…

Q: In vertebrates, there exist a double circulation. What are these and explain each in the terms of…

A: Introduction The circulatory system pumps blood from the heart to the lungs to get oxygen, An…

Q: Explain how two- and three-chambered vertebrate heartswork and in which animal groups each is found.

A: The circulatory system was evolved in animals to transport the gases and nutrients in the blood. The…

Q: Summarize the diference between the circulatory system of a fish and that of a mammal.

A: Fish: In fish, it is a closed circulatory system. It has two chambers: a single atrium and ventricle…

Q: Define the Vertebrate circulatory pathways ?

A: Step 1 The circulatory system is a system connected with the flow of fluid in the body so as to…

Q: What structures are involved gas exchange in animals? O gills O lungs allantois chorion

A: Respiration is a biochemical process of oxidation of organic compounds in an orderly manner for the…

Q: explain the development of the circulatory system.

A: The circulatory system includes the heart, blood vessels- arteries and veins, etc. mainly. The…

Q: Differentiate between single and double circulation found in vertebrates.

A: All the vertebrates are having circulatory system which consist of central pump (heart) and a…

Q: Explain why gaseous exchange in a mammal involves continuous loss of water vapour from the body.

A: Mammals are a group of vertebrates and form the class Mammalia, mainly characterized by the presence…

Q: Part II: Cellular senescence is observed when there is obstruction of the coronary circulation to…

A: Introduction- The heart is a major organ which supply blood to the whole body and the coronary…

Q: Animals with open circulatory systems utilize a fluid called_______ that serves the function of both…

A: (a) Hemolymph (b) Interstitial Fluid (c) Hemocoel

Q: Describe the structure of the heart of a mammal

A: The heart is a hollow muscular organ that pumps the blood through the circulatory system by rhythmic…

Q: How many chambers dothe bird heart and themammalian heart have?Concerning temperaturemaintenance…

A: The circulatory system consists of the heart, blood vessels, capillaries, and blood. The heart is…

Q: euterostome Animals, p. 681 of our text). 4. What kind of circulatory system do herring have (be…

A: Heart is the main organ of the circulatory system. It pumps blood to all parts of the body thereby…

Q: What is the alternativemeans for transport ofsubstances in animals withouta circulatory system? Why…

A: A cell is the basic structural and functional unit of life. They are often called as "Building…

Q: What is the primary function of Circulatory system?

A: Circulatory system is a kind of transport system. It is also called as a blood vascular system.

Q: Describe the actions of the frog heart chambers during a cardiac cycle.

A: The heart is a muscular pumping organ that passes deoxygenated blood to the pulmonary organ and…

Q: Sketch and label a tricuspid valve

A: Tricuspid valve as the name suggests contains three flaps or 3 cusps are present on the right side…

Q: circulation in fish, amphibians and mammals. a description of one way in which the amphibian…

A: Introduction :-   Nutrients and gases are transported throughout the body via the circulatory…

Q: In acorn worms and pterobranchs, the force for ultrafiltration is generated by: muscles of the…

A: Pterobranchia are Marine invertebrates that live in the ocean flower and are small worm-like…

Q: What are the advantages ofthe closed circulatory systemover the open circulatorysystem?

A: Simple organisms like sponges and coelenterates have mechanisms to circulate water of their…

Q: How is the respiratory system of insects (with its independence between circulation and respiration)…

A: The respiratory system of insects is separate from their circulatory system. It functions for…

Q: With the help of diagram, show pulmonary circulation in man.

A: The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood…

Q: What are the major characteristics of veins and arteries as blood vessels in an animal circulatory…

A: Heart and blood vessels make up the circulatory system. The circulatory system's important job is to…

Q: in humans, the body cavity plays no role whatsoever in circulation. Why

A: The human body consists of several cavities that accommodate several internal organs. These cavities…

Q: Briefly describe the 2 mechanisms frogs have for gas exchange.

A: A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians…

Q: Why, even thoough theyhave an open circulatorysystem, can flying insects likeflies beat their wings…

A: A circulatory system facilitates the transport of molecules from one part of the body to another by…

Q: During exercise—as compared with rest—what are the aspects ofblood O2 transport that can be modified…

A: The system is made up of the heart, blood vessels, blood, blowhole, trachea, bronchi, and lungs,…

Q: How is the structural organization of the circulatory system related to the animal’s respiratory,…

A: The cardiovascular system is formed of three independent systems that may work together: the guts,…

Q: What is circulatory system and uts varios types?

A: The circulatory system includes the heart, blood vessels, and blood. Blood transports oxygen and…

Q: Anatomy-wise, how different is the circulatory system of the cat from that of other vertebrates?

A: The circulatory system of vertebrates is a complex network of blood vessels which transports blood…

Q: Why are the two separate circulatory systems said to be “serially connected”?

A: Circulatory system refers to the system that involves circulation of solutes and gases within the…

Q: Which of the following would likely t a part of the circulatory system? O pituitary gland O distal…

A: Circulatory syatem also known as blood vascular system is divided into two types:  Open circulatory…

Q: Do fishes present an openor closed circulatory system?How many chambers does afish heart have? How…

A: Introduction: Fish belongs to  Pisces class of Phylum Chordata. It has a skin with scales covering…