Skip to content
Clear highlightsClear Highlight Report a problem

Features of a Transport System

Transport systems of large animals have the following features:
  • A fluid medium which could be liquid or gas to carry substances around. In humans blood plasma is the watery medium that carries substances around the body.
  • A closed system of vessels containing the transport medium which branches extensively to distribute substances to all parts of the organism.
    • A mechanism for moving the transport medium in bulk under pressure through the closed system of vessels to deliver substances more rapidly than diffusion.

Read the text

Read the text and highlight anything you think is important. When you go on, the text is hidden and you answer from memory.

Next

Specification: AQA Biology (7401), AS-level, 3.3.4.1 Mass transport in animals. Topic: Mass Transport in Animals.

Key terms in this lesson

diffusion
The net passive movement of molecules or ions from a region of higher concentration to a region of lower concentration, down a concentration gradient.

More in Mass Transport in Animals

All 27 lessons in Mass Transport in Animals · All AQA AS-level Biology topics