Some segmented animals have groups of segments specialized for particular functions. The process of forming distinct body regions is called (a)   .

Errantian annelids are distinguished by lateral extensions of the body called (a)  

The region of the polychaete head that is dorsal and anterior to the mouth, and is sensory in function, is the (a)   .

The body part surrounding the annelid mouth and bearing tentacles is the (a)  

The body cavity of most annelids is divided into compartments by "curtains" of tissue called (a)  

External respiratory exchange in most annelids is accomplished by (a)  

(a)   increase the surface area for respiratory exchange in some polychaetes.

In most annelids each body compartment has a (a)   ganglion which aids in coordination of swimming and crawling.

(a)   are sensory pits on the heads of annelids that function as chemoreceptors for food detection.

The major nitrogenous waste produced by annelids is (a)  

The open, ciliated funnel of the metanephridium is the (a)  

The girdle-like structure used for mucus secretion during copulation in some sedentarians is the (a)  

During feeding, the (a)   of earthworms helps to pump in food.

The (a)   is a thin-walled storage area in the earthworm digestive tract.

The (a)   acts to grind food in the earthworm digestive tract.

The (a)   is a dorsal invagination that increases the surface area of the earthworm intestine.

In annelids, the (a)   is a site of amino acid metabolism.

Chloragogen tissue of annelids is similar in function to the vertebrate (a)  

The superficial external rings on a leech are called (a)  

The anticoagulant secreted by leech salivary glands is (a)  

What shape is the cross-section of the nematoda body?

(a)  

What is the name of the non-living cell layer that covers the annelid and nematode body?

(a)  

What part of the nematode and annelid body makes the cuticle?

(a)  

What type of muscle contraction in nematodes provides movements?

(a)  

(a)   species are ones that have separate forms for males and females.

Scientific name of the giant intestinal roundworm

(a)  

Scientific name of the human pinworm

(a)  

Scientific name of the new world hookworm

(a)  

Scientific name of the porkworm

(a)  

Genus name of the filarial worms

(a)