Human Anatomy

Anatomy of the testes
Sweating (perspiration)
Urinary tract
3 weeks pregnant: The beginning of human development

3 weeks pregnant: The beginning of human development

Pregnancy week by week: By week 3 of the 40 weeks of gestation, the uterus has finished regenerating and is now entering the secretory phase, which will provide the ideal environment for implantation (embedding of the fertilised egg into the uterus) should fertilisation occur.

Urinary tract

The function of the urinary system is to remove waste products from the body, regulate water and salt balance, and to store and transport urine. The urinary system is divided into upper and lower sections. The upper urinary system is made up of the kidneys and ureter,...