A&P Chapter 9 Review: Muscle Tissue

Skeletal, Smooth and Cardiac

A basic, contractile unit of striated muscle formed from several fused elongated cells; not present in cardiac muscles.

One of the filaments that make up a myofibril; either the thick filament-myosin or the thin filament-actin; responsible for muscle contraction; myo-referring to muscle

The membrane that surrounds each muscle fiber; a transparent, tubular sheath that envelops the fibers of skeletal muscles

The ability to receive and respond to a stimulus accordingly

1. Neurotransmitters
2. pH changes

*Both causing a reaction in the muscle

The ability to shorten

The ability to be stretched

The ability to recoil; relax back to resting length

Skeletal

Smooth and Cardiac

*Oxygen, Energy and the Removal of Waste*Contracting muscle tissue uses a tremendous amount of oxygen and energy, producing equal amounts of waste products; creating the need for extensive capillary branching.Arteries of a muscle bring in oxygen and nutrients, while veins take away waste produced from muscle contractions; such as carbon dioxide and lactic acid...muscle contraction produce a lot of waste, so extensive branching is necessary to remove waste quickly; so the muscle can continue to contract

1. The production of movement
2. The maintaining of body posture/body position
3. The stabilizing of joints
4. The ability to generate heat
5. The formation of valves to regulate the passage of substances through internal body organs

A type of attachment to bone, where part of the muscle is attached to a (more) movable bone

A type of attachment to bone, where part of the muscle is attached to a (less) movable bone; not immovable!*All bones are movable to some extent