EPT2

Each muscle fiber is innervated by only one motor neuron

Slow twitch fibers have the greatest oxidative capacity

Larger muscles generate more force than smaller muscle

Larger motor units are recruited when smaller amounts of force are needed

If the charge inside the cell decreases, the cell is depolarized

Motor learning can account for as much as 50% of the overall gain in strength

Chronic hypertrophy is caused by fluid shifts and does not have any real gains in strength

Muscle size is partly responsible for gains in muscular strength

One way to improve muscular power is to perform plyometric exercises, which take advantage of the body’s natural reflex response, through the use of the stretch-shortening cycle

Exhalation of air results in expansion of the rib cage and lungs

if a motor unit receives an impulse, every muscle that is connected will contract

During breathing at rest, both inspiration and expiration are active processes

The absolute refractory period is where the neuron could respond to a stimulus if the stimulation was sufficient

Resistance training is safe for all individuals, regardless of age, with appropriate safeguards in place

The amount of oxygen in arterial blood increases from rest to exercise

The red blood cells are ~98% saturated with oxygen when leaving the lungs

ATP is needed to break apart the actin and myosin in order to re-orient themselves and create another “power stroke”

CO2 production is the main driver of increased ventilation

Chemoreceptors are located in the brain, carotid bodies, and aortic arch and help to increase ventilation

Individuals with COPD may have their lungs limit their aerobic exercise performance

The basic unit of the muscle is

Which part of the muscle contains only actin

A single motor neuron and all of the muscle fibers it innervates describes

As a result of muscular shortening, which part of the muscle stays the same length?