At MinuteClinic, vaccinations for children as young as 18 months (5 years in CT) through seniors are administered by a nurse practitioner or physician assistant.** No appointment necessary. Flu is more dangerous than the common cold for children. Flu (Influenza) vaccine for children available at MinuteClinic. Patients 18 months and older in most states, 24 months and older in KY, 5 years and older in CT. About the Flu
Segmented worms are bilaterally symmetrical. Their body consists of a head region, a tail region and a middle region of numerous repeated segments. Each segment is separate from the others by a structure called a septa.
List of Types of Segmented Worms. Environmentally beneficial, earthworms help fertilize and aerate soil. Ryan McVay/Photodisc/Getty Images. Worms are invertebrates with long, soft bodies and no hard skeleton. Their shapes are varied, and they range in size from microscopic to 75 feet in length. Scientists have classified worms into more than 15 phyla. The phylum Annelida contains the segmented worms. Annelida is further divided into three subclasses: Oligochaeta, Hirudinea and Polychaeta. Thousands of species of segmented worms comprise these three subclasses.