Blood Vessels & the Liver | Biology for GCSE/IGCSE - Year 11 PDF Download

Blood Vessels & the Liver: Extended

• Identification of Main Blood Vessels to and from the Liver:
  • The hepatic artery carries oxygenated blood from the heart to the liver.
  • The hepatic vein returns deoxygenated blood from the liver to the heart.
  • The hepatic portal vein transports deoxygenated blood from the gut to the liver.
• Understanding the Roles:
  • The hepatic artery delivers oxygenated blood for liver functions.
  • The hepatic vein carries deoxygenated blood away from the liver.
  • The hepatic portal vein transfers blood containing nutrients from the intestines to the liver for processing.
• Key Blood Vessels:
  • Hepatic Artery: Carries oxygen-rich blood to the liver.
  • Hepatic Vein: Returns deoxygenated blood to the heart.
  • Hepatic Portal Vein: Transports blood from the digestive system to the liver.

Mammalian circulatory system

Function of the Circulatory System

• The circulatory system in mammals is responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body.

Components of the Circulatory System

• Heart: The heart pumps blood to all parts of the body through a network of blood vessels.
• Blood Vessels: These include arteries, veins, and capillaries that carry blood to and from the heart.
• Blood Circulation Process: Blood is pumped by the heart, travels through the arteries to the body tissues, exchanges oxygen and nutrients for waste products in the capillaries, and returns to the heart through the veins.
• Importance of Blood: Blood plays a crucial role in maintaining homeostasis, regulating body temperature, and defending the body against infections.
• Disorders of the Circulatory System:
  • Hypertension: High blood pressure can strain the heart and blood vessels, leading to serious health issues.
  • Heart Disease: Conditions affecting the heart can impair its pumping function and circulation.