What are the 3 levels of organizations of muscle tissue?

Muscular System Levels of Organization Microscopic level — sarcomere and myofibrils. Cell level — myoblasts and myofibers. Tissue level — neuromuscular junctions and fascicles. Organ level — major skeletal muscles of the body.

What are the 3 types of muscle fibers and what do they do?

The three types of muscle fiber are slow oxidative (SO), fast oxidative (FO) and fast glycolytic (FG). SO fibers use aerobic metabolism to produce low power contractions over long periods and are slow to fatigue. FO fibers use aerobic metabolism to produce ATP but produce higher tension contractions than SO fibers.

What are the 4 properties of muscle fibers list them and explain each?

All muscle cells share several properties: contractility, excitability, extensibility, and elasticity:

  • Contractility is the ability of muscle cells to forcefully shorten.
  • Excitability is the ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone.

What is the sarcomere?

The sarcomere is the basic contractile unit for both striated and cardiac muscle and is made up of a complex mesh of thick filaments, thin filaments, and a giant protein titin.

What are the 4 tissue types?

There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).

What are the 4 properties of skeletal muscle?

Muscle tissue has four main properties:

  • Excitability – ability to respond to stimuli;
  • Contractibility – ability to contract;
  • Extensibility – ability of a muscle to be stretched without tearing;
  • Elasticity – ability to return to its normal shape.

What is the fascicle?

Each fascicle (or fasciculus) is a bundle of muscle fibers, also called myocytes, bound together via the endomysium tissue that provides pathways for the passage of blood vessels and nerves.

Is a skeletal muscle?

skeletal muscle, also called voluntary muscle, in vertebrates, most common of the three types of muscle in the body. Skeletal muscles are attached to bones by tendons, and they produce all the movements of body parts in relation to each other.

What are the 4 main classes of connective tissue?

The extracellular matrix between the cells usually includes fibers of one or more types embedded in an amorphous ground substance. Connective tissues are classified into four classes: BLOOD, BONE, CARTILAGE, CONNECTIVE TISSUE PROPER.

What is a muscle fiber?

Muscle tissue contains something called muscle fibers. Muscle fibers consist of a single muscle cell. They help to control the physical forces within the body. When grouped together, they can facilitate organized movement of your limbs and tissues.