NematodesEmily, 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. 2015.

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. 2015.

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. 2015.

Digestive System

One way system

Mouth

Anus

"The Digestive System and Its Nematoda Phylum." Digestive System. N.p., n.d. Web. 02 Oct. 2015.

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. 2015.

Circulatory System

Diffusion/ Osmosis

No Blood Stream

"Nematoda." Nervous System. N.p., n.d. Web. 02 Oct. 2015.

Respiratory System

Diffusion/ Osmosis

Cutaneous

Respiration through skin

"Introduction to the Nematoda." Introduction to the Nematoda. N.p., n.d. Web. 02 Oct. 2015.

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. 2015.

Reproductive System

Sexual

"Reproductive Systems of Nematodes." Reproductive Systems of Nematodes. N.p., n.d. Web. 02 Oct. 2015.

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. 2015.

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. 2015.

Filaria(Parasitic Roundworm)

ElephantitisGross conditionBody parts enlargeObstruction with Lymphatic System

Circulatory systemVital to immune systemCarry clear fluid Lymph fluidTravel towards heart

"Lymphatic Filariasis." Lymphatic Filariasis. N.p., n.d. Web. 02 Oct. 2015.

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.. 2015, 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. 2007. "Nematoda." Encyclopedia.com. HighBeam Research, 01 Jan. 2002. Web. 02 Oct. 2015.

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 hoodDictionary.com. Dictionary.com, n.d. Web. 02 Oct. 2015.

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. 2015.