Lateral View

Ventral View

Glossary of Terms
  • Dorsal - Top of the big, its back
  • ventral - the underbelly of the pig
  • anterior - The front side of the pig, its head
  • posterior - the back side of the pig, towards the tail
  • pectoral - the chest wall, the pectoral muscles are the muscles on the wall of the chest.
  • pelvic - the pelvis or pelvic girdle is the irregular bony structure located at the base of the spine.
  • head- located to the far anterior of the pig, the head comprises the brain, eyes, ears, snout, and mouth.
  • trunk- the main part of the body. the neck and limbs extend from the trunk.
  • thorax- the thorax could also be described as the chest of the pig. It is the division of the animal's body between the head and the abdomen.
  • abdomen-the abdomen, also known as the belly, is the part of the body between the thorax (chest) and the pelvis.
  • medial- pertains to the middle of the body.
  • caudal- area located at or near the tail of the pig
  • cranial- of or relating to the skull or cranium.
  • umbilical cord-the connecting cord from the developing embryo or fetus to the placenta. It normally contains two arteries and one vein.
  • mammary papillae- the 'teets' of the pig located on the ventral side. in a female pig, milk lactates from the mammary papillae and feeds the young.
  • proximal-the term used to describe where the appendages join to the body.
  • distal- the term used for the point furthest from the points of attachment on the body.
  • lateral- the side of the pig.
  • left- the left side of the pig, is the left side when looking at the pig from behind.
  • right-the right side of the pig is the right side when looking at the pig from behind.

This is the head

Eye closed
Eye Open
This is a picture of the pigs head with 4 labeled parts

Male Pig Labeled Photo


This is a photo of a male pig and the reproductive system.

This is a picture of a female

Legs Labeled Photo


The umbilical cord

This is a picture of the umbilical cord with two

Glossary Terms #2
  • pinnae- the visible part of the ear that lies outside the head.
  • eye- organ that detects light, and sends signals through the optic nerve to the brain.
  • nictitating membrane- translucent third eyelid that can be drawn across the eye for protection and to moisten the eye while keeping visibility.
  • eyelids- thin fold of skin that covers and protects the eye
  • urogenital opening (female)-
  • urogenital papillae- structur located ventral from the anus that allows the pig to urinate or remove fluid wastes from the body.
  • anus- opening at the bottom of the digestive tract opposite from the mouth that waste is excreted through.
  • urogenital opening (male)-
  • scrotal sacs- thin-walled, soft, muscular pouch containing two compartments to hold the testicles.
  • artery- blood vessel that carries blood away from the heart.
  • vein- blood vessel that carries blood back to the heart.
  • ankle- where the foot and leg meet; a hinge joint that connects the leg to the foot
  • knee- hinge joint located in the middle of the leg, or the back limbs of the pig.
  • wrist- a double row of short bones, called carpals, that are intertwined to form a hinge.
  • elbow- hinge joint in the middle of the arm, or front limbs of the pig
  • toe- the digits of the foot; the toes provide balance, and are weight-bearing during walking.

Umbilical veins - blood vessel present during fetal developement that carries oxygenated blood from the placenta to the growing fetus. Only one umbilical vein in the umbilical cord.
7. Umbilical Arteries - supplies deoxygenated blood from the fetus to the placenta in the umbilical cord. There are usually 2 umbilical arteries present in the umbilical cord.
8.Do both sexes have mammary papillae? Explain.
Yes, both sexes have mammary papillae. The female papillae lacate milk that feed the young. The males, the mammary papillea do nothing.
9. How many mammary papillae are present in the fetal pig?
There are 14.
10. Compare and contrast the fore limb and the hind limb of the pig to the fore limb and hind limb of the human. Include presence of joints and the movement of the limbs in your description.
The pig and us have the same limbs. The way they are hinged move very easily.
11. Compare and contrast the external anatomy of the clam, crayfish, starfish and pig.
The pig is the only one of the four organisms that have fleshy skin. The clam has a hard shell, the crayfish has an exoskeleton, and the starfish has a tough skin.