Muscular Tissue Histology Questions

Myocardium is the muscular
layer of the heart. Thus, the myocardium is composed of cardiac
muscle.

Both skeletal muscle and cardiac muscle have visible striations.
Collectively, skeletal muscle and cardiac muscle are classified as
"striated muscle".

The fundamental property of muscle tissue is that it is
specialized for contraction.

Red fibers are more resistant to fatigue than are white fibers.

Non striated muscle is also called smooth muscle. Smooth
muscle is involuntary muscle. It is found in viscera and blood
vessels.

Myofilaments are the contractile protein within a muscle cell.
The myofilaments are actin and myosin. The thin filaments are
actin and the thick filaments are myosin.

The endomysium is the covering around an individual muscle fiber

Red fiber and slow twitch muscle is for endurance.
White fiber and fast twitch muscle is for a burst of power.

The A band is the darker staining band. The I band is the light
band. The I band is made of thin filaments. The Z line runs
through the I band. The H band bisects the A band. The M line
runs through the H band.

Skeletal muscle fibers can be classified as red fibers, white fibers
or intermediate fibers. Red fibers are smaller in diameter; white
fibers are larger in diameter. Red fibers have more
mitochondria than white fibers. Red fibers make up slow-twitch
muscle; white fibers make up fast-twitch muscle. Red fibers are
more resistant to fatigue than are white fibers. Red fibers have
more myoglobin (oxygen binding pigment) than white fibers.
White fibers store glycogen and use anaerobic metabolism.

The sarcolemma is the plasma membrane of a muscle cell. The
sarcoplasm is the cytoplasm of a muscle cell.

Skeletal muscle fibers can be classified as red fibers, white fibers
or intermediate fibers.

Red fibers have more myoglobin (oxygen binding pigment) than white fibers.
White fibers store glycogen and use anaerobic metabolism.

The A band is the darker staining band. The I band is the light
band. The I band is made of thin filaments. The Z line runs
through the I band. The H band bisects the A band. The M line
runs through the H band.

On a cross section of a muscle, each thick filament is surrounded
by 6 thin filaments.

Myofilaments are the contractile protein within a muscle cell.
The myofilaments are actin and myosin. The thin filaments are
actin and the thick filaments are myosin

The outer connective tissue covering of a muscle is the
epimysium. Within the muscle, there are subdivisions called
fascicles. The perimysium surrounds these muscle fascicles.

A ganglion is a collection of nerve cell bodies outside of the central nervous system. White matter is myelinated nerve fibers. Gray matter is essentially neuron cell bodies. Nodes of Ranvier are the gaps that occur in the myelin sheath. Neurofilaments are a type of intermediate filaments seen in neurons.

The A band is the darker staining band. The I band is the light
band. The I band is made of thin filaments. The Z line runs
through the I band. The H band bisects the A band. The M line
runs through the H band.

Skeletal muscle is multinucleated. The nuclei are seen on the
periphery. Occasionally, cardiac muscle is bi-nucleated.

The outer connective tissue covering of a muscle is the
epimysium.

A single motor neuron and the aggregation of muscle fibers
innervated by that single neuron is called the motor unit. A
motor neuron is a neuron which innervates a muscle cell. The
point of contact where a neuron contacts a muscle is the motor
end plate. A neuromuscular spindle is a receptor which is
sensitive to stretching of the muscle. A neurotransmitter is the
chemical released by a nerve at a synapse.

A neurotransmitter is the chemical released by a nerve at a synapse.