Slide #22

Cardiac Muscle

• Striated
• Regulated by troponin and tropomyosin
• Influenced by catecholamines and cardiac glycosides
• Contractiion occurs by crossbridge cycling like Skeletal muscle
• Electrical syncitium maintained by Gap Junctions
• Mitochondria are more numerous than in skeletal muscle
• T-Tubules and the Terminal Cisternae are arranged in Diads