1. In the third step of embryogenesis, gastrulation, the primary germ layers become distinct and develop. Which of the primary germ layers does the kidney derive from?
From Quiz Urine for a Surprise: The Urinary System
Answer:
Mesoderm
After the female's ovum has been fertilized by the male's sperm, the process of embryogenesis begins with cleavage. The second step, blastulation, is then followed by gastrulation. Gastrulation is the stage where the three primary germ layers become distinct and develop.
The kidney and the other urogenital organs develop in the mesoderm, as well as all the body's muscle, bone, and connective tissue. In addition, some mesoderm cells will also be determined as the dermis of the skin and the entire cardiovascular system.
The endoderm is responsible for the creation of all the epithelium that line the gastrointestinal tract, the respiratory system, and the urogenital system.
The ectoderm most notably becomes the nervous system, the pituitary gland, medulla, along with the cornea and lens of the eyes. In addition, it will also become the nasal, oral, and anal epithelium.