“Mayra”, a 10 year-old, female, spayed Golden Retriever, has…

“Mayra”, a 10 year-old, female, spayed Golden Retriever, has a 2-month history of enuria, a condition in which urine is being expelled at night during sleep. Her owner, Ms. Escobar, was so frustrated with this night “bedwetting” that she visited her local veterinarian. Unfortunately, the practice was out of the usual, Food & Drug Administration approved drug so she had to prescribe Mayra a substitute drug which was going to be formulated and compounded at a local pharmacy into capsules but would provide Ms. Escobar’s dog with the same relief as the approved drug. The most likely drug prescribed was

“Mary”, a 9 year-old German Shepherd had bladder trauma afte…

“Mary”, a 9 year-old German Shepherd had bladder trauma after being hit by PeeWee Herman’s bicycle. This trauma left her bladder unable to contract with very little, if any, bladder muscle (detrusor) tone. In order to stimulate bladder contractions, which drug would Mary benefit from?

Annelids (Phyla Annelida) The annelid body is composed of ri…

Annelids (Phyla Annelida) The annelid body is composed of ringlike segments. The segments of the annelid body are separated by septa. Each segment contains a pair of excretory organs, a ganglion, and, in most marine annelids, a set of reproductive organs. Anterior and posterior segments contain light, chemo-, and touch receptors. Segments are connected by a ventral nerve cord that includes an anterior brain region, and by a closed circulatory system. Annelids move by contracting their segments. The fluid-filled coelom acts as a hydrostatic skeleton. Each segment typically possesses chaetae, chitin bristles that help anchor the worm. Annelids have a closed circulatory system but a segmented excretory system. Annelids have a closed circulatory system; the dorsal vessel is connected to the ventral vessel by smaller vessels in the body wall. Each segment contains a pair of nephridia that excrete wastes out of the body via the coelom and excretory tubes. Annelids vary greatly in size and habits. Marine worms used to be considered a clade, but are now understood to be paraphyletic. Annelids are divided into two main clades, the Errantia and Sedentaria. Within the Sedentaria, the Clitellata includes earthworms and leeches. Screenshot 2025-03-09 at 11.44.45 PM.png Figure 5. Diagram of the body of an annelid. The earthworm body plan is based on repeated body segments. Segments are separated internally from each other by septa.