★ Circulation of Blood Quiz
Upper chamber of the heart. Receives blood from the body & lungs.
A. Atrium
B. Artery
C. Ventricle
D. Valve
Select your answer:
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Gaseous Exchange in Humans › ViewCarbon dioxide diffuses from ________ to alveolus
A. trachea
B. lung
C. blood capillary
D. bronchus
Joints & Movement › View
What is the function of synovial fluid in synovial joints?
A. Acts as a lubricant that reduces friction in the joint; allows for smoother movement and reduces wear and tear.
B. Surrounds and protects the joint, holding the bones together.
C. Strong, elastic fibres that hold bones together and keeps them in place
D. Strong but flexible material found at the end of the bones that acts as a cushion and reduces friction
E. Produces synovial fluid which lubricates the joint