Give an account of the arterial or venous system of lizard?

In a essay explain in detail the regulation of blood pressure and details of blood vessels and the relative pressure found in them.

Describe the heart of Labeo?

Fill in the gaps in the paragraphs below: Blood pressure can be regulated by the nervous system, in particular the ____________________ nervous system. Initially changes to blood composition and pressure can be detected by ____________________: ____________________for pressure, ____________________for chemical changes, ____________________for temperature, and ____________________for movement. These changes are collected by the medulla oblongata in the brain, which will initiate the ____________________nerve to reduce blood pressure or the ____________________system to increase it. So when blood pressure is high, the ____________________system is used, heart rate ____________________and the systolic blood pressure ____________________. When blood pressure is too low, the ____________________system takes over, heart rate and contractility ____________________, and ____________________occurs in the blood vessels.