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What is the irregular traverse thickenings of the sarcolemma that contain gap junctions which allow muscle action potentials to spread quickly from one cardiac muscle fiber to another?
Intercalated Discs
What is the z discs?
Z discs, or Z lines, are structures found in striated muscle fibers, such as skeletal and cardiac muscle. They mark the boundaries of a sarcomere, the basic contractile unit of muscle tissue, and serve as the anchoring point for thin filaments (actin). During muscle contraction, the Z discs move closer together as the sarcomeres shorten, facilitating muscle movement. Z discs also play a role in maintaining the structural integrity of the muscle fiber.
The region between two successive Z discs is called?
The region between two successive Z discs is called a sarcomere. It is the functional unit of a muscle fiber where the actin and myosin filaments interact during muscle contraction.
What are discs?
Discs are pads of fiber and cartilage that contain rubbery tissue
What are all muscle cells called?
A single muscle cell is called a muscle fiber.
Each muscle fiber is also called a?
Each muscle fiber is also called a myofiber.
What is the Smaller fiber in a muscle fiber?
Myofibril
Exercise can do what?
make more muscle fiber
Describe the structure of cardiac muscle?
unlike the heart muscle, which is an involuntary muscle, the skeletal muscles are voluntary(movement by choice). these muscles rely on joint mobility with the skeletal bones for leverage. this joint mobility exists because of the tendons that attach muscle to bones through connective tissue, and the types of connective tissue depends on the joint connecting the bones
What is the term for a Smaller fiber in a muscle fiber?
The smaller fiber in a muscle fiber is called a myofibril. A band of tissue that connects bone to bone is called a ligament.
What is a single muscle called?
a muscle fiber
What is the basic unit of muscle?
muscle fiber
