It is shown that the truncation of the infinite hierarchy of fluid equ
ations obtained as moments of the Vlasov kinetic equation leads to a s
ystem of nonlinear equations that describe finite-larmor-radius effect
s with good accuracy. Inertial terms in the momentum balance, viscosit
y and heat-flux evolution equations are crucial for a uniform descript
ion of the plasma response with an arbitrary Larmor radius. In the low
-frequency ordering, the obtained equations are simplified by an expan
sion in the parameter 1/B, where B is the equilibrium magnetic field.
The results of the second-order O(1/B-2) and the fourth-order O(1/B-4)
closures are compared. It is shown that the accuracy of the descripti
on improves for higher-order closures.