The Liver - Basic Human Anatomy - Lecture Slides, Slides for Anatomy

The Liver - Basic Human Anatomy - Lecture Slides, Slides for Anatomy

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Human Anatomy course teaches a student the structural nature and significance of each of the major organ systems, and how each system carries out its unique role in the living organism. Key points in this lecture are: Th...
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I. Introduction/General Information

A. Largest of viscera

1. ~ 2.5% body weight

2. Completely covered by

Glisson’s Capsule

3. Incomplete covering by


General Information, continued …

4. Measurements are ~

a. 21 – 23 cm transverse

b. 15 – 18 cm superior

to inferior

c. 10 – 13 cm anterior

to posterior

General Information, continued …

B. Location:

1. right hypochondrium

2. epigastrium

C. Mostly covered by


D. Contains numerous

vascular structures

II. Detailed Anatomy

A. Four lobes

1. Divisions based on blood supply,

bile drainage

2. Anatomical lobes divided

by falciform ligament

Inferior View of the Liver



Detailed Anatomy, con’t…

3. Functional Lobes

a. right and left lobes

separated by

imaginary line

b. from fossa for GB 


Right and Left Functional Lobes of the Liver





Detailed Anatomy, continued …

B. Functional Divisions

1. Right lobe with caudate process

2. Left lobe:

a. Caudate lobe

b. Quadrate lobe



Detailed Anatomy, continued …

C. Fissures:

1. Right sagittal (main)

2. Left sagittal (accessory)

3. Portal

4. Right oblique intersegmental

5. Lateral intersegmental

Fissures of the Liver

 Main lobar fissure  Boundary

between R and L lobes  L.S. on U/S: seen

as hyperechoic line from PV to neck of GB

 Used to ID GB when it is packed with stones

Fissures of the Liver

 Portal fissure

 T.S. on U/S

 Created by portal

veins (triads)

 R. main PV is //

to anterior body


Segments of the Liver

 Hepatic segments

 I = caudate lobe

 II & III = superior and

inferior lateral

segments, L. lobe

 IV = medial segment,

L. lobe

 V & VI = caudal to

transverse plane

 VII & VIII = cephalad

to transverse plane


Functional divisions, continued …

4. Fossae (Superficial)

a. IVC – posterior

b. Portal Vein – inferior

c. Gallbladder – inferior

Fossae, Inferior Surface of the Liver

 Fossa for IVC

 Fossa for

Portal Vein

 Fossa for Gall


Functional Divisions, continued …

5. Impressions (visceral surface):

produced by abdominal viscera

a. Gastric (fundus of stomach) b. Renal (right kidney)

c. Adrenal (right adrenal gland)

d. Duodenal (bulb of duodenum)

e. Esophageal (esophagus)

f. Right and left colic (flexures of

the colon)

Visceral Impressions, continued …






•Right colic

•Left colic





Detailed Anatomy, continued …

D. Ligaments

1. Falciform (most superficial anteriorly)

a. Divides left lobe in two sections

1. anatomical left lobe 2. caudate & quadrate lobes

b. Two layers of peritoneum

c. Extends to umbilicus

Ligaments, continued …

2. Ligamentum teres hepatis

(fetal source??)

3. Ligamentum venosum

(fetal source??)

4. Right/Left Coronary Ligaments

Hepatic Ligaments

 Falciform ligament

 L. coronary ligament

 L. triangular ligament

 Ligamentum teres


 Ligamentum


Ligaments, continued …

5. Hepatophrenic & Hepatorenal


a. Subdivisions of right

coronary ligament

b. hepatophrenic (superior)

& hepatorenal (inferior)

c. Surround BARE AREA

Hepatic Ligaments, con’t…

 Hepatophrenic


 Hepatorenal


Bare Area

Detailed Anatomy, continued …

E. Lesser Omentum

1. Sleeve-like structure

2. Connects lesser curvature of

stomach & bulb of duodenum to

inferior surface of liver

3. AKA: Gastrohepatic or

Hepatoduodenal ligament

Lesser Omentum, continued …

3. Attachment surrounds Porta Hepatis

4. Continues on each side of ligamentum


5. Extends to caudate & left lobes

on posterior surface of liver

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