Nematodes Emily, Teegan, Matt Block 2 Plant and Animal Biology

Nematodes  Multicellular animal  Simple Structure  Adult – 1,000 somatic cells  Digestive, nervous, excretory and reproductive system.  0.3mm- 8m  Feed on bacteria, fungi, and other organisms  Small but very dangerous "Nematodes in General." Nematodes in General. N.p., n.d. Web. 02 Oct

Nematodes  Symmetry  Bilateral  Movement  Flexes  Contraction of longitude muscles  High internal pressure  No cilia present Bilateral Symmetry "The Digestive System and Its Nematoda Phylum." Digestive System. N.p., n.d. Web. 02 Oct

Nervous System  Present  Pharyngeal nerve ring  Ventral nerve cord  Dorsal Ventral  Longitude axis  Spine like  Nerve fibers  Solid-double strand "Introduction to the Nematoda." Introduction to the Nematoda. N.p., n.d. Web. 02 Oct

Digestive System  One way system  Mouth  Anus "The Digestive System and Its Nematoda Phylum." Digestive System. N.p., n.d. Web. 02 Oct

Excretory System  2 openings  Waste leaves body  Outer layer of skin  Salt leaves through body  Pores "NEMATODE." NEMATODE. N.p., n.d. Web. 02 Oct

Circulatory System  Diffusion/ Osmosis  No Blood Stream "Nematoda." Nervous System. N.p., n.d. Web. 02 Oct

Respiratory System  Diffusion/ Osmosis  Cutaneous  Respiration through skin "Introduction to the Nematoda." Introduction to the Nematoda. N.p., n.d. Web. 02 Oct

Skeletal System  Absent  Cuticle- not a “True” skeleton  Outer layer  Rigid, flexible, molts (sheds)  Limits motion  Hypodermis under cuticle  Large cell  Muscles  All muscles run lengthwise "Nematoda." Skeletal System. N.p., n.d. Web. 02 Oct

Reproductive System  Sexual "Reproductive Systems of Nematodes." Reproductive Systems of Nematodes. N.p., n.d. Web. 02 Oct

Ascaris (Parasitic Roundworm)  Use body as hosts  Mature from larva to adults  Reproduce inside intestines  Most Common infection  Transmitted  Unsafe food and water  Affect dog, cat, humans "Ascaris Lumbricoides (human Intestinal Roundworm)." Animal Diversity Web. N.p., n.d. Web. 02 Oct

Hookworm (Parasitic Roundworm)  Live off humans  Affect lungs and small intestine  Live in soil  Enter through feet  Suck blood  Travel in blood stream  Enter lungs  Travel through windpipe  Go to intestines "Hookworm Infection - Infectious Diseases." Merck Manuals Professional Edition. N.p., n.d. Web. 02 Oct

Filaria (Parasitic Roundworm)  Elephantitis  Gross condition  Body parts enlarge  Obstruction with Lymphatic System  Circulatory system  Vital to immune system  Carry clear fluid  Lymph fluid  Travel towards heart "Lymphatic Filariasis." Lymphatic Filariasis. N.p., n.d. Web. 02 Oct

Phylum Facts  Commonly referred to as Roundworms  Body structure  Live anywhere  Found in organisms  Damp locations  Soil  Food  Water  Parasites  Organism lives in another (Host)  Dependent for survival  Feed on Yeh, Jennifer, Robert McSorley, "Nematoda." The Columbia Encyclopedia, 6th Ed , Michael Allaby, "Nematoda." A Dictionary of Biology. 2004, AILSA ALLABY;MICHAEL ALLABY, "nematode." A Dictionary of Nursing. 2008, "nematode." The Oxford Pocket Dictionary of Current English. 2009, "nematode." World Encyclopedia. 2005, and "nematode." Oxford Dictionary of Rhymes "Nematoda." Encyclopedia.com. HighBeam Research, 01 Jan Web. 02 Oct

Pseudocoelom (Soo-doo-see-lum)  Advancement  Fluid filled body cavity  Contains organs  Not in place  Not a “True” body cavity  Shows development  Coelom  More advanced  Full body cavity  Adult hood Dictionary.com. Dictionary.com, n.d. Web. 02 Oct

Fun Facts  1 bucket soil= 1 million  1 rotten apple= 90,000  Feed on anything  Live in any habitat  Cause serious disease  12,000 species known- million estimated "Root-knot Nematode." Root-knot Nematode. N.p., n.d. Web. 02 Oct