Anatomic Variation

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Explore examples of how the body develops differently from standard anatomic configuration.

Cardiovascular

Aorta – ostia
Dual superior mesenteric artery ostia

Coronary arteries
Left dominant system

Respiratory

Lobes
Two right lobes (variant fissure configuration)

Two right lobes (absent horizontal fissure)

Gastrointestinal

Small Intestine
Meckel’s diverticulum

Hematopoietic

Spleen
Accessory spleen

Musculoskeletal

Xiphoid
Bifid xiphoid process

Cranial sutures
Metopic fissure

Genitourinary, Neurologic, Endocrine

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Aorta – ostia

Usual configuration

Dual superior mesenteric artery ostia

Case 20 Part 2
Abdominal aorta – main branches. Inferior vena cava. Basic anatomy.

Case 8 Part 5
Aorta assessment. Dual superior mesenteric artery ostia.

Coronary Arteries

Usual configuration – right dominant

Left dominant system

Case 14 Part 9
Coronary artery assessment.

Case 3 Part 11
Left dominant coronary artery system.

Lobes

Usual configuration

Two right lobes
(variant fissure configuration)

Two right lobes
(absent horizontal fissure)

Case 14 Part 6
Heart and lung block.

Case 40 Part 8
Right lung variant anatomy.

Case 47 Part 2
Massive cardiomegaly. Bilobed right lung.

Small intestine

Usual configuration

Meckel’s diverticulum

Case 1 Part 7
Removal of intestine.

Case 37 Part 12
Opening the small intestine. Meckel’s diverticulum.

Spleen

Usual configuration

Accessory spleen

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Case 9 Part 1
Spleen dissection.

Xiphoid process

Usual configuration

Bifid xiphoid process

Case 1 Part 4
Removal of chest plate.

Case 42 Part 1
Bifid xiphoid process.

Cranial sutures

Usual configuration

Metopic (frontal) suture

Case 18 Part 3
Brain exposure.

Case 5 Part 1
Base of skull anatomy.

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