Crayfish, The A Complete Classification, Habitat, Predator And Prey, Body Plan, Nervous System, Circulatory System, Digestive System, And Respiratory System

654 words - 3 pages

ClassificationThe crayfish falls within the kingdom - anamalia, phylum - Arthropoda, Class - Crustacea, Order -Decapoda , and family - Cambaridae.HabitatCrayfish like to be where it's dark and cool, and during much of the daylight they will be found by them selves, under a rock or vegetation, waiting for dark, when they come out to forage for food. This is highly variable, ranging from deep holes to sluggish streams. A suitable habitat is medium-sized streams containing riffles and rocky pools. They burrow very aggressively, burrowing to find warmth, moisture, and food or just to pass the time. In Arizona we are trying to rid of crayfish because they aren't native here and are taking over fish population.Prey & PredatorCrayfish are omnivorous, which is to eat just about anything they can find or catch either dead or alive. Large food is held and torn to pieces in the la ...view middle of the document...

Crayfish are preyed upon heavily by fish, such as trout, pickerel, and bass, and other invertebrates may eat them.Body PlanCrayfish have bodies similar to that of the presumed ancestral crustacean. Such a body is essentially shrimp-like in that it is elongate and nearly cylindrical in cross section. The abdomen is well developed and its segmentation is easily noted. The crayfish has bilateral symmetry, anterior, posterior, dorsal, ventral, right, and left.Nervous SystemThe crayfish nervous system is composed of a ventral nerve cord fused with segmental ganglia, and the supresophageal and subesophageal ganglia. Giant neurons in the ventral nerve cord function in escape responses. The supraesophageal and subesophageal ganglia control the head appendages in response to sensory input received from receptors. Receptors are organs that receive senses and pass these to the brain. Examples are the eyes, antennas, and ears. The tactile recoptors are widley distributed on appendages and joint as they function as equilibrium, balance, and position senses.Circulatory SystemThere is a dorsal tubular heart and several arteries. The crayfish has an open circulatory system in which the blood flows from arteries into sinuses, or spaces, in tissues. The blood flows over the gills before returning to the heart.Digestive SystemThe maxillae pass the pieces of food into the mouth. The food travels down the short esophagus into the stomach. The digestive gland produces digestive substances and from which the absorption of nutrients occurs. The green glands (also called antennal glands because they have ducts which exit near the base of the second antennae) function in excretion and osmoregulation. Undigested material passes into the intestine. The intestine is attached to the lobed stomach. The undigested material is exiled from the anus.Respiratory SystemThe gills are feather-like structures found underneath the carapace and attached to the chelipeds and walking legs. There is a constant flow of blood to the gills releases carbon dioxide and picks up oxygen.

More like Crayfish, The A Complete Classification, Habitat, Predator And Prey, Body Plan, Nervous System, Circulatory System, Digestive System, And Respiratory System

Respiratory System - Muscular System

330 words - 2 pages ... The respiratory system is oxygen inhaled into the body and oxygen exhaled from the body. The oxygen is carried throughout all the body systems by blood through the blood vessels. The blood is then pumped by the heart. When a person is resting the blood pumps 5 liters of blood, when the person is exercising the heart pumps 7 times the amount of blood.The amount of air you breathe depends on how active you are. When you start to move around and ...

Biology - Cardiovascular, Digestive, Respiratory And Urinary Systems - Touro College - Biology 101 - Cardiovascular System

2572 words - 11 pages ... Test #2 The Cardiovascular System: The Heart & The Blood Vessels: Function: To transport Oxygen (O2) to the cells & tissues in the body and remove Carbon Dioxide (CO2) Parts of the Cardiovascular System include: 1. The Heart – the pump 2. The Blood – the fluid 3. The Vascular System – a series of blood vessels The Heart: A hollow, muscular organ that lies between the lungs Parts: 1. Pericardium – a membrane that surrounds the outside of the ...

The Nervous System: A Basic Summary Of The Nervous System And Some Little Peices On How It Is Affected By Disease And Drugs

1560 words - 7 pages ... fight the viral cells until they're destroyed. Divisions of the Nervous System The nervous system controls almost every organ in the body through a series of positive and negative feedback loops. The central nervous system consists of the brain and the spinal cord. The peripheral nervous system connects the central nervous system to the rest of the organs through networks of nerves. Nerves are made up of bundles of neurons. Not all animals have a ...

A Closer Look Into The Respiratory System - BIOS105 - Project Proposal

527 words - 3 pages ... , skeletal system, circulatory system, muscular system, and finally the nervous system. The digestive system breaks down food into simpler substances that the body can use including proteins. This helps the respiratory system because the lungs need nutrients. The respiratory system helps the digestive system by giving oxygen to the digestive system. The skeletal system is like a metal shield covering the body. This system helps the respiratory system by ...

Respiratory System Project : All About The Respiratory System - Science - Research Paper

1008 words - 5 pages ... function properly. Oxygen is the most crucial thing for keeping humans alive because the body’s cells need it for energy and growth; without oxygen, the body’s cells would be dead. Carbon dioxide is a gas that is produced when carbon is combined with oxygen as part of the body’s energy-making processes. The respiratory system takes in oxygen and enables the body to get rid of carbon dioxide as air is breathed out. The respiratory and digestive ...

Functions Of Organs In The Digestive System,(basic)

607 words - 3 pages ... Salivary GlandsThe mouth contains the salivary glands, which is a digestive gland. The salivary glands produce a liquid substance called saliva. The saliva acts as a cleanser to the teeth by dissolving food particles so that they may be eaten. Saliva also contains enzymes and mucus. There are three major pairs of salivary glands. The parotid gland carries its contents and drains the mouth. The submandibular gland empties its contents on the ...

Dowry System

574 words - 3 pages ... affair and de-linked from our social status, the system of dowry will continue forever. But this will happen only if there is a complete change in attitude towards marriage of all persons who are directly connected with it, for instance, of the bride and bride grooms and the girls and boys itself. The system of dowry has debased our culture. Nowadays dowry deaths hit the headlines of the newspapers. The poor brides either commit suicide or are ...

Complete Debriefing Of The Cardiovascular System - Human Biology - Review

898 words - 4 pages ... Cardiovascular System I. Cardiovascular System – Heart and blood vessels A. Functions 1. Contractions of heart generate blood pressure in arteries for flow 2. Keep oxygen rich blood and carbon dioxide rich blood separate 3. One way valves in heart and veins keep blood flowing one way 4. Heart and blood vessels regulate blood flow according to needs of the body 5. Exchange of nutrients and oxygen to the cells and removal of wastes B. Circulation ...

The Cardiovascular System

1729 words - 7 pages ... arterial system. Stimulation of these receptors sends info to the vasomotor center in the brainstem that results in temporary inhibition of the sympathetic nervous system and enhancement of the parasympathetic influence, causing a decreased HR and peripheral vasodialtion. Chemoreceptors are located in the aortic arch and carotid body. They are capable of initiating changes in HR and arterial pressure in response to decreased arterial O2 ...

The Lymphatic System

659 words - 3 pages ... used as class final paper over and body system great research!!The Lymphatic SystemThe Lymphatic System is very important. It helpswith the Cardiovascular system, and our immune systems.The Lymphatic System is made up of two semi-independentparts. One is a network of lymphatic vessels. The otherpart is various lymphoid tissues and organs all over thebody. The functions of the Lymphatic System transportingfluids that have escaped from the blood ...

The Fiat Money System

1762 words - 8 pages ... In a fiat money system money has value because of its relative scarcity and the faith placed in it by the people using it. In this system, there is no limit on the amount of money that can be created. Fiat monetary systems come into existence as a result of excessive public debt. When the government cannot repay its debt in gold or silver, the temptation to remove physical backing rather than to default becomes irresistible. This was the case in ...

Wal-mart Automated Training And Assessment System

4205 words - 17 pages ... management is taking a proactive stance on ensuring that information is free flowing between all relevant levels of stakeholders in the success of this project. To further the success of the program, participants in the online training will provide feedback on the quality and usability of the system at the end of each training module. As both new and existing employees will be required to complete the modules relevant to his or her position, this ...

Government And Political System Of Canada

1350 words - 6 pages ... -class as well as farmer support, the party's appeal extended beyond its birthplace. It formed the provincial government in Saskatchewan in 1944 and in the federal election of 1945 won 16% of the popular vote. As a result of the implementation of a national social security system and post-World War II prosperity, however, the CCF was unable to consolidate this initial success.In 1960, faced with progressive electoral decline, the CCF reconstituted ...

Updating Of The Backup System

1507 words - 7 pages ... inaccessible, but a computer specialist or a software program may be able to restore the data. File and program data recovery can be performed so that important data can be retrieved (Johnson, 2003).In any business, though, it is essential and crucial that all data be preserved. Because of the enormity of data in a business environment, due to the aspect of a networking system, a system of backing up data as similar to those processes mentioned ...

Hemodynamics And The Urinary System - English - Homework Assignments

2207 words - 9 pages ... cycle ● Why is the control of mean arterial pressure important? 1) To maintain and control blood flow (perfusion) to organs, tissues, etc. 2) To influence bulk movement (filtration) across capillary walls Flow ● Blood flow (perfusion) = Amount blood/time moving past a given point or into or out of an organ ● To change flow, must change pressure or resistance Blood Pressure in Various Parts of the Cardiovascular System ● Roughly the same in aorta and ...