FETAL PIG DESIGN:
ANATOMY

There are two basic kinds of “cutting.”
Sharp dissection – cutting with a scalpel or scissors.
• What are the advantages and disadvantages?
• When should we use sharp dissection?
Blunt dissection – separating tissues with a blunt probe, scalpel handle, or fingers.
• What are the advantages and disadvantages?
• When should we use blunt dissection?

There are two anatomical approaches to dissection
• Regional anatomy – dissection to study the “regions” of the body – head and neck, thorax, abdominal cavity, legs, etc.
• Systemic anatomy – dissection to study the body system: musculoskeletal, digestive, respiratory, etc.
• We will use a hybrid combination of approaches.

M
SG
Find:
• Masseter
• Submandibular salivary gland

Cheek

Some superficial muscles

More superficial muscles

Neck and thorax
Find:
• Trachea and larynx
• Thyroid gland
• Thymus
• Heart: left and right auricles
• Pulmonary artery trunk
• Anterior vena cava
• Common carotid artery and vagus nerve
• Jugular vein

Neck and thorax

Neck and thoracic cavity
Find:
• Trachea
• Thyroid gland
• L and R auricles of heart
• Pulmonary trunk
• Anterior vena cava
• Common carotid and vagus nerve

Neck and thoracic cavity

Thoracic cavity
Find:
• Esophagus
• Lung
• Diaphragm
• Aorta
• Intercostal a. and v.

Thoracic cavity

Upper abdominal region

Upper abdominal region
Find:
• Body and pylorus of stomach
• Greater and lesser curvatures of stomach
• Gall bladder
• Cystic duct
• Common bile duct

Abdominal cavity
Find:
• Liver
• Spleen
• Small intestines
• Spiral colon
• Rectum
• Mesentery
• Kidney
• Ureter
• Uterus (horn)
• Ovary

Abdominal cavity

Abdominal cavity
Find:
• Liver
• Umbilical vein
• Spleen
• Pancreas
• Small intestine
• Mesentery
• Spiral colon
• Rectum
• Kidney
• Ureter

Abdominal cavity

Abdominal viscera
Find:
• Liver
• Stomach
• Greater omentum
• Spleen
• Small intestines
• Mesentery
• Mesenteric lymph nodes
• Spiral colon

Abdominal cavity: male pig
Find:
• Liver and spleen
• Stomach
• Pancreas
• Small intestines and mesentery
• Spiral colon
• Kidney and ureter
• Vas deferens

Abdominal cavity
Male pig

Abdominal viscera

Female pig
(colon retracted)
Find:
• Small intestine
• Cecum
• Spiral colon
• Kidney and ureters
• Horns of uterus
• Fallopian tube
• Ovaries

Think…
Female pig
(colon retracted)

Female viscera
Find:
• Body of uterus
• Uterine horns
• Fallopian tubes
• Ovaries
• Bladder
• Umbilical artery

Female viscera

Think…
The human uterus has a body but no horns. Why does it make biological sense that pigs, dogs, and cats have uteri with two well-developed horns?

Male pig
Find:
• Kidney and ureter
• Rectum
• Urinary bladder
• Testis
• Epididymis
• Vas deferens

Male pig