Which type of muscle is striated but under involuntary control?

Explanation

Cardiac muscle has the cross striations of skeletal muscle because it uses the same actin and myosin arrangement, but it contracts rhythmically on its own without conscious control and its fibres are branched and joined by intercalated discs. Skeletal muscle is striated and voluntary, and smooth muscle is involuntary but has no striations, so cardiac muscle is the only combination of both features.