Agriculture
New Gene Fights Potato Blight
Seeds of the Future
Middle school science adventures
Amphibians
Salamanders
Frogs and Toads
Toads
Animals
Fishing for Giant Squid
New Monkey Business
Firefly Delight
Behavior
Puberty gone wild
Baby Talk
The (kids') eyes have it
Birds
Robins
Eagles
Crows
Chemistry and Materials
The hungry blob at the edge of the universe
Picture the Smell
Heaviest named element is official
Computers
It's a Small E-mail World After All
Galaxies far, far, far away
Troubles with Hubble
Dinosaurs and Fossils
Dinosaur Eggs-citement
The man who rocked biology to its core
Big Fish in Ancient Waters
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Hot Summers, Wild Fires
A Great Quake Coming?
Pollution at the ends of the Earth
Environment
To Catch a Dragonfly
Little Bits of Trouble
Groundwater and the Water Cycle
Finding the Past
Oldest Writing in the New World
Digging Up Stone Age Art
Watching deep-space fireworks
Fish
Megamouth Sharks
Manta Rays
Saltwater Fish
Food and Nutrition
Chocolate Rules
Healing Honey
Symbols from the Stone Age
GSAT English Rules
Adjectives and Adverbs
Who vs. That vs. Which
Capitalization Rules
GSAT Exam Preparation Jamaica
The Annual GSAT Scholarships
Preparing for the GSAT Exam
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
Results of GSAT are in schools this week
GSAT Exam Preparation
GSAT Mathematics
How a Venus Flytrap Snaps Shut
How to Slice a Cake Fairly
It's a Math World for Animals
Human Body
Walking to Exercise the Brain
Cell Phone Tattlers
Workouts: Does Stretching Help?
Invertebrates
Lobsters
Mosquitos
Butterflies
Mammals
Mongooses
Humpback Whales
Sea Lions
Parents
Expert report highlights the importance to parents of reading to children!
Raise a Lifelong Reader by Reading Aloud
Choosing a Preschool: What to Consider
Physics
Road Bumps
The Pressure of Scuba Diving
Spin, Splat, and Scramble
Plants
A Change in Leaf Color
When Fungi and Algae Marry
Cactus Goo for Clean Water
Reptiles
Gila Monsters
Crocodiles
Snapping Turtles
Space and Astronomy
Saturn's New Moons
Cousin Earth
Holes in Martian moon mystery
Technology and Engineering
Beyond Bar Codes
Musclebots Take Some Steps
A Micro-Dose of Your Own Medicine
The Parts of Speech
Countable and Uncountable Nouns
What is a Preposition?
Adjectives and Adverbs
Transportation
How to Fly Like a Bat
Ready, unplug, drive
Robots on the Road, Again
Weather
Science loses out when ice caps melt
Arctic Melt
Polar Ice Feels the Heat
Add your Article

Tapeworms

In biology, Cestoda is the class of parasitic flatworms, called tapeworms, that live in the digestive tracts of vertebrates as adults and often in the bodies of various animals as juveniles. In a tapeworm infection, adults absorb food predigested by the host, so the worms have no need for a digestive tract or a mouth. Large tapeworms are made almost entirely of reproductive structures with a small "head" for attachment. Symptoms vary widely, depending on the species causing the infection. Symptoms may include upper abdominal discomfort, diarrhea, and loss of appetite. However, infestations are usually asymptomatic. Worm segments or eggs may be found in the stool of an infected person The largest tapeworms can be 80 feet or longer. Tapeworms harm their host by stealing vital nutrients, causing malnutrition and if left untreated can cause intestinal blockages. Adult tapeworms share a basic body plan. All have a scolex, sometimes colloquially referred to as the "head," a "neck," and one or more proglottids, which are sometimes called "segments," and which are the source of the name "tapeworm," because they look like a strip of tape. All cestodes have a nerve ring in the scolex with lateral trunks passing through the rest of the body. The Scolex or "head" of the worm attaches to the intestine of the definitive host. In some groups, the scolex is dominated by bothria, which are sometimes called "sucking grooves," and which function like suction cups. Other groups have hooks and suckers that aid in attachment. Cyclophyllid cestodes can be identified by the presence of four suckers on their scolex, though they may have other structures as well. While the scolex is often the most distinctive part of an adult tapeworm, it is often unavailable in a clinical setting, as it is inside the patient. Thus, identifying eggs and proglottids in feces is important. The Neck of a tapeworm is a relatively undifferentiated mass of cells that divide to form new proglottid "segments." This is where all growth in an adult tapeworm occurs. Posterior to the scolex, they have one or more proglottids that hold the reproductive structures. The sum of the proglottids is called a strobila. It is shaped thin like a strip of tape, which is the source of the common name tapeworm. Like some other flatworms, cestodes use flame cells (protonephridia) for excretion, which are located in proglottids. Mature or gravid proglottids are released from the mature tapeworm and leave the host in its feces. Because each proglottid can reproduce independently, it has been suggested by some biologists that each should be considered a single organism, and that the tapeworm is actually a colony of proglottids. Tapeworms can be effectively cured with antiparasitic (antihelmintic) medication once it is detected. Current Centers for Disease Control and Prevention guidelines for treatment is a prescription drug called praziquantel. The medication causes the tapeworm to dissolve within the intestines. Praziquantel is generally well tolerated. Sometimes more than one treatment is necessary.

Tapeworms
Tapeworms








Designed and Powered by HBJamaica.com™