require maximal contraction of muscles for short periods of time
Contractions that utilize anaerobic ATP production
most of the muscle's energy is produced in mitochondria
During activities requiring aerobic endurance
repeated, exhaustive stimulation
Fast muscle fibers can develop a larger number of mitochondria in response to
muscle fibers increase their reserves of glycogen
Each of the following changes in the skeletal muscles is a consequence of aging except that
Smooth muscle connective tissue forms tendons and aponeuroses
Which of the following is not characteristic of smooth muscle?
forcing blood from the heart into the major arteries
Which of the following is not a function of smooth muscle tissue?
Muscle tissue, one of the four primary types of tissue, consists chiefly of muscle cells that are highly specialized for
At each end of the muscle, the collagen fibers of the epimysium, perimysium, and endomysium come together to form either a bundle known as a _____, or a broad sheet called an aponeurosis.
both A and B
Differences between skeletal muscle cells and typical cells include which of the following?
Knowning that the myofibrils attached at the Z line of the sarcolemma and at either end of the muscle fiber, when myofibrils get shorter, the muscle fiber
The cytoplasm of the synaptic terminal contains mitochondria and vesicles filled with molecules of the neurotransmitter
the action potential does not arrive
Knowing the five steps that occur causing a neuron to stimulate a muscle fiber, if there is a problem with the release of calcium ions in the third step,
muscles are attached to bones by tendons
The contraction of a muscle exerts a pull on a bone because
Large diameter, densely packed myofibrils, large glycogen reserves, and few mitochondria are characteristics of
Which of the following hormones directly stimulates growth of muscle tissue and increased muscle mass?
a rich vascular supply.
Because skeletal muscle contractions demand large quantities of ATP, skeletal muscles have
hemoglobin concentration in muscle fibers increases.
During muscle contraction, all of the following occur, except
decreased distance between Z lines during contraction.
Physical evidence that supports the sliding filament theory of muscle contraction includes
the concentration of calcium ion in the sarcoplasmic reticulum of a resting muscle
Which of the following is greater?
After death, muscle fibers run out of ATP and calcium begins to leak from the sarcoplasmic reticulum into the sarcoplasm. This results in a condition known as
It would cause spastic paralysis
How would blocking the activity of acetylcholinesterase affect skeletal muscle?