Key Terms - Ch 13

Question 0

Cesode

Answer 0

Tapeworm with a head and segmented body parts that is capable of growing to several yards in the human intestine

Question 1

Ascaris

Answer 1

The most prevalent helminthic infection; fertilized round worm eggs are ingested, which hatch in the small intestine and then make their way to the lungs, where they may cause cough, fever, and other signs of pulmonary infiltrate

Question 2

Filariasis

Answer 2

Infection of the blood and tissues of healthy individuals by worm embryos or filariae

Question 3

Helminth

Answer 3

Worm that can cause disease by invading the human body

Question 4

Hookworm

Answer 4

Worms that attach themselves to the small intestine of infected individuals, where they suck blood from the walls of the intestine, damaging the intestinal wall and leading to severe anemia with lethargy, weakness, and faigue

Question 5

Nematode

Answer 5

Roundworms such as the commonly encountered pinworm, whipworm, threadworm, ascaris, or hookworm that cause a common helminthic infection in humans; can cause intestinal obstruction as the adult worms clog the intestinal lumen or severe pneumonia when the larvae migrate to the lungs and from a pulmonary infiltrate

Question 6

Pinworm

Answer 6

Nematode that causes a common helminthic infection in humans; lives in the intestine and causes anal and possible vaginal irritation and itching

Question 7

Platyhelminth

Answer 7

Flatworms, including the cestodes or tapeworms; a worm that can live in the human intestine or can invade other human tissues (flukes)

Question 8

Schistosomiasis

Answer 8

Infection with a blood fluke that is carried by a snail; it poses a common problem in tropical countries, where the snail is the intermediary in the life cycle of the worm; larvae burrow into the skin in fresh water and migrate throughout the human body, causing a rash and then symptoms of diarrhea and liver and brain inflammation

Question 9

Threadworm

Answer 9

Pervasive nematode that can send larvae into the lungs, liver, and central nervous system (CNS); can cause severe pneumonia

Question 10

Trichinosis

Answer 10

Disease that results from the ingestion of encysted round worm larvae in undercooked pork; larvae migrates throughout the body to invade muscles, nerves,and other tissues; can cause pneumonia, heart failure, and enchephalitis

Question 11

Whipworm

Answer 11

Worm that attaches itself to the intestinal mucosa and sucks blood; may cause severe anemia and disintegration of the intestinal mucosa