Which type of tissue primarily composes the transversus abdominus muscle?

The transversus abdominus muscle is primarily composed of skeletal muscle tissue. This type of tissue is characterized by its striated appearance and is responsible for voluntary movement. Skeletal muscle fibers are connected to bones by tendons and enable a wide range of movements in the body, particularly those related to posture and core stability.

The transversus abdominus is specifically located in the abdominal wall and plays a crucial role in stabilizing the pelvis and lumbar spine, as well as contributing to functions like forced expiration and intra-abdominal pressure regulation. Its orientation—running horizontally—makes it especially important for maintaining core strength and stability.

In contrast, connective tissue serves primarily to support, bind, and protect various other tissues and organs, but does not constitute the main component of muscle structure itself. Smooth muscle is involuntary and found in walls of hollow organs, while epithelial tissue forms protective layers and linings in the body and does not have the specialized function of contraction that defines skeletal muscle.