The fibrous skeleton of the heart functions in all of these ways except in the fibrous skeleton of the heart functions in all of these ways except in acting as the point of insertion for bundles of cardiac muscle in the atria and ventricles anchoring the valve cusps causing direct spread of electrical impulses from the atria to the ventricles lining the heart chambers, covering the heart valves, and forming the ridge of the crista terminalis preventing overdilation of the valve openings

The fibrous skeleton of the heart functions in all of the ways listed in the option, except causing direct spread of electrical impulses from the atria to the ventricles. The fibrous skeleton in fact supports proper coordination of atrial and ventricular contractions by blocking direct spread of electrical impulses from atria to ventricles.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )