Microscopic Anatomy of skeletal muscle

Connective tissue surrounding a fascicle

Perimysium

Connective tissue covering the entire muscle

Epimysium

Contractile unit of muscle

Sarcomere

A muscle cell

Fiber

Thin connective tissue enclosing each muscle cell

Endomysium

plasma memebrane of the muscle cell

Sarcolemma

A long, filamentos organelle found within muscle cells that has a banded appearance

Myofibril

Acting - or myosin containing structure

My filament

Cordlike extension of connective tissue beyond the muscle, serving to attach it to be the bone

Tendón

A discrete bundle of muscle cells

Fascicle

Fused tetanus

Is a continuos contraction that shows no evidence of relaxing

Isotonic contraction

Is a contraction in which the muscle shortens and work is done

Many motor unit

To accomplish a strong contraction are stimulated at rapid rate

Few motor units

When a weak but smooth muscle contraction is desired are stimulated at a rapid rate e

Fatigue

When a muscle is being stimulated but is not able to respond because of oxygen deficit the condition is called

Isometric contraction

Is a contraction in which the muscle does not shorten, but tension in the muscle keeps increasing

Accompanied by lactic acid formation

Anaerobic glycolysis

Supplies the highest ATP yield per glucose molecule

Aerobic respiration

Involves the simple transfer of a phosphate grupo

Coupled reaction of creating phosphate

Requieres no oxygen a

Anaerobic glycolysis and coupled reaction of creatinine phosphate

The slowest ATP regeneration process

Aerobic respiration

Produces carbon dioxide and water

Aerobic respiration

The energy mechanism used in the second hour of running in a marathon

Aerobic respiration

Used when tjeoxygen supply is inadequate over time

Anaerobic glycolysis

Good for a sprint

Coupled reaction of creatine phosphates

Repaying the oxygen deficient

The rate of respiaratii. Is much faster and you breath deeply

Oxygen deficit

Decreased ATP, increased lactic acid, decreased oxygen, increased carbon dioxide