What type of muscle excitable?

Skeletal muscle is excitable, meaning it can respond to stimuli and generate action potentials, leading to contraction. Cardiac muscle also exhibits excitability, allowing it to respond to electrical signals for rhythmic heart contractions. Smooth muscle, found in internal organs, is excitable as well but responds to different stimuli, such as hormones and neurotransmitters. All three types of muscle tissues have specialized mechanisms to transmit electrical signals, enabling coordinated movement and function.