Abdomen: The posterior division of the spider body, comprising the pedicel and usually largely unsegmented saclike portion bearing the spinnerets.

 

Related Words

Abdomen: The posterior division of the spider body, comprising the pedicel and usually largely unsegmented saclike portion bearing the spinnerets.

Scutum: A hard, often shiny, sclerotized plate on the abdomen of some spiders.

Sigillum: (pl. sigilla) An impressed, sclerotized spot, often reddish-brown. Often present on the dorsal surface of the abdomen and marking points of internal muscle attachments.

Pedicel: The narrow stalk connecting the cephalothorax and the abdomen.

Folium: Any pattern of pigment on the dorsum of the abdomen which is fairly broad and leaf-shaped.

Epigastric Fold: A fold and groove separating the anterior part of the ventral abdomen (with epigyne and book lungs) from the posterior part.

Sperm Induction: The process of transferring the spermatozoa from the genital orifice beneath the base of the abdomen into the receptacle in the male palpus.

Spiracle: The opening of the tracheae on the underside of the abdomen.

Liver: An organ in the upper abdomen that aids in digestion and removes waste products and worn-out cells from the blood. The liver is the largest solid organ in the body. The liver weighs about th . . . View Full Definition

Low Back Pain: Pain in the lower back area that can relate to problems with the lumbar spine, the discs between the vertebrae, the ligaments around the spine and discs, the spinal cord and nerves, muscles . . . View Full Definition