1. Hepatic Portal Circulation Cerebral Circulation Pages 376-382
Special Circulation
Hepatic Portal Circulation
Cerebral Circulation
Pages

2. Arterial Supply of: the Brain and the Circle of Willis
CEREBRUM:
Blood supply branches from
internal carotid arteries
Cerebral arteries
BRAIN STEM AND CEREBELLUM:
Vertebral arteries
Basilar artery
This system of arteries branches to form a circle which supplies the major brain structures
© 2015 Pearson Education, Inc.

3. Figure 11.15a Arterial supply of the brain.
Anterior
Cerebral arterial circle
(circle of Willis)
Frontal lobe
Internal carotid
artery
Temporal lobe
Basilar artery
Pons
Vertebral artery
Occipital lobe
Cerebellum
(a)
Posterior

4. Figure 11.15b Arterial supply of the brain.

5. Hepatic Portal Circulation- dual blood supply
sends blood from certain organs (digestive, pancreas, spleen) for processing by the liver
The hepatic portal vein is the transport vessel
After nutrients are removed and stored, blood is returned to systemic circulation
via the hepatic portal vein to the inferior vena cava
veins are supplying the liver with blood for processing while arteries supply the liver with oxygen
© 2015 Pearson Education, Inc.

6. Figure 11.16 The basic scheme of the hepatic portal system.
Arterial
blood
Venous
blood
Inferior
vena cava
Stomach and intestine
Liver
Nutrients and
toxins absorbed
Liver cells (hepatocytes)
Nutrients
and toxins
leave
Hepatic
portal vein
First capillary bed
Second capillary bed
(liver sinusoids)
Hepatic
vein
Hepatic portal system

7. Figure 11.17 The hepatic portal circulation.
Inferior vena cava
(not part of hepatic
portal system)
Gastric veins
Liver
Spleen
Stomach
Hepatic
portal vein
Splenic vein
Inferior
mesenteric vein
Superior
mesenteric vein
Small
intestine
Large intestine

8. Hepatic Portal Circulation Animation
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