External Anatomy of fetal pig

• Eyelid: Pigs are born with closed eyelids.
• Pinna: The external earflap. It gathers sound and directs it into the external auditory canal
• External nares: The exterior openings of the nose used for breathing and the sense of smell. Pigs have a well-developed sense of smell
• Vibrissae: The long, stiff hairs on the head, commonly called whiskers. Their function is touch
• Digit: These are the toes and hooves.
• Mammary papilla: There are five to six pairs of these structures present in both sexes, but only develop into the mammary glands in females
• Umbilical cord: Contains the two umbilical arteries and one umbilical vein.  The vessels within the cord are responsible for nutrient, gas, and waste exchange between the fetus and maternal placenta
• Anus: The terminal opening of the digestive tract
• Genital papilla - Female only: The female’s external genitalia. Similar to the human vulva. Terminal ends of the vagina and urethra are located here
• Urogenital opening - Male only: The opening that is the terminal end of the male urogenital tract (urethra). Located near the base of the umbilical cord in the fetal pig
• Scrotum - Male only: A sac of skin containing the male’s testes. Helps to thermoregulate the testes