Pig dissection

What is the classification of pigs?

Kingdom: animalia

Phylum: chordata

Subphylum: vertebrata

Class: mammalia

What kind of mammals are pigs?

Monogastric: have a single stomach

Physical characteristics of pigs

Have a snout body, flat snout for rooting, bristly hair, and four toed heads

Connection between pigs and humans

Anatomically similar; often used in medical research

What is the weight of pigs

140-300 kg (310-660 lbs)

characteristic of pigs complexity

They have highly developed senses and complex that system designed to handle varied omnivores diet

Snout

The collagenous, disk- tipped snout with a prenasal bone, used for digging and something

Skin/hair

Sparse, Bristly hair over thick skin, with sweat glands limited to the snout

Limbs

For limbs with four hoofed toes on each foot; the two central toes bear the most weight

Tail

Short and usually curled in domesticated pigs

Underline

Two rows of teats (mammary papillae) on the ventral surface, with more teats in females

Urogenital opening

On females

Skeletal/muscular internal anatomy

Includes a strong, large skull with a large masseter (jaw) for chewing

Digestive system

Monogastric (single stomach) with a large cecum for bacterial digestion of plant matter

Respiratory system

Trachea branches into lungs, where the right lung has four lobes in the left has two (sometimes three depending on development)

Reproductive system

Females have long, coiled uterine horns for large litters

Internal anatomy image

External anatomy image

How to determine the sex of the pig

Based on the urogenital opening

Which structures are found in the abdominal cavity of the pig

Liver, stomach, small and large, intestines, gallbladder, spleen

Which structures are found in the thoracic cavity of the pig

Lungs, heart, trachea, diaphragm

Which structures are found in the urogenital system

Kidney and bladder