Nematodes have

Question 1

Their bodies are enclosed
in a tough, impermeable, collagenous noncellular

Answer 1

cuticle secreted by the underlying hypodermis

Question 2

What type of digestive tract does nematodes have

Answer 2

They have a simple digestive tract running from their anterior to posterior

Question 3

What Type of body cavity does nematodes have

Answer 3

pseudocoel (or false coelom or cavity),

Question 4

pseudocoel (or false coelom or cavity), is filled with

Answer 4

pressurized liquid (hydrostatic pressure)
that keeps the nematode body’s shape.

Question 5

Most nematodes sexual reproductivity is

Answer 5

dioecious

Question 6

This is the “whipworm” of a man found in the caecum and adjacent regions of the digestive tract.

Answer 6

Trichuris trichiura

Question 7

esophageal stichosome other name?

Answer 7

(a secretory or storage organ) composed of a single column of stichocyte.

Question 8

These are slender worms with the body tapering from the middle to the anterior end. Females are 3-4
mm long while the males are 1.5 mm long with the conical appendage at the posterior and without
spicules. Adults have a smooth cuticula and underlying hypodermis. The apical mouth leads into a short
pharynx connected into a long esophagus partially enclosed into a column of granular cells or stichosome.
A simple intestine runs from the esophagus to the terminal anus

Answer 8

Trichinella spiralis

Question 9

Pinworms are parasitic in human caecum, colon, and the appendix. The slightly retractile mouth
surrounded by three lips opens, which apically passing posteriorly from the mouth is the cuticulate
pharynx. The pharyngeal bulb connects to the tubular intestine and terminates into the rectum, which
opens into the anus. In the male worms, the tubular testis joins the sperm storage organ or seminal
vesicle connected posteriorly to the ejaculatory duct. The ejaculatory duct and rectum open into the
cloaca. Two sets of tubular ovaries and oviducts coil in the middle of the body and proceed forward into
the vulva.

Answer 9

Enterobius vermicularis

Question 10

The body is cylindrical, tapering towards the end. The males are smaller, measuring from 6-12 inches while
the females are 8-16 inches long. The males have a ventrally curved posterior end with two copulatory
spicules protruding from the slit-like anal opening

Answer 10

.Ascaris lumbricoides

Question 11

Pinworms are parasitic in human caecum, colon, and the appendix.

Answer 11

Enterobius vermicularis

Question 12

Hookworms are referred to as such due to their anterior end’s curved hook-like appearance

Answer 12

Necator americanus

Question 13

is known as the New World hookworm because it was first recognized in Puerto Rico. It is
responsible for 95% of all hookworm cases in the United States. T

Answer 13

Necator americanus

Question 14

They possess buccal capsules that have a
pair of dorsal and ventral cutting plates they use to attach themselves to the intestinal mucosa of their
vertebrate hosts. Their stout, muscular pharynx helps them suck blood and tissue fluids for nutrition.

Answer 14

Necator americanus

Question 15

is another medically relevant parasitic hookworm of humans

Answer 15

Ancylostoma duodenale

Question 16

The causative agent of lymphatic filariasis or more specifically, the Bancroftian filariasis or Bancroft’s
filariasis.

Answer 16

Wuchereria bancrofti

Question 17

This filarial worm is found in the lymph nodes of humans. Humans are the only known natural
definitive hosts of W. bancrofti and other filarial worms (e.g., Brugia and Loa). A

Answer 17

Wuchereria bancrofti