MUSCLE YISSUE Flashcards
Types of muscle tissue
Skeletal muscle
Cardiac muscle
Smooth muscle
cytoplasm of muscle cells.
Sarcoplasm
smooth ER of muscle cells.
Sarcoplasmic reticulum
the muscle cell membrane and its external lamina.
Sacrolemma
the process of tissue growth that is characterized by increased cell volume.
Hypertrophy
the process of tissue growth by an increase in the number of cells.
Hyperplasia
How does skeletal muscle forms
Myoblast → Myotube (protein & myofilament) → Striated muscle fibers → Skeletal muscle tissue.
contain the major ion channels that control Ca2+ release from sarcoplasmic cisternae at myofibrils that initiates contraction.
caveole
smaller encapsulated structures that enclose sensory axons penetrating among the collagen bundles at the myotendinous junction; detect changes in tension within tendons.
Golgi tendon organ
sensory proprioceptors in which sensory axons wrap around intrafusal fibers in small specialized fascicles; mediate reflexes of varying complexity.
muscle spindles
sensory receptor that provides the CNS with data from the musculoskeletal system.
proprioceptors
anchored actin filament to z-disc.
α-actinin
supports the thick myofilaments and connects them to the Z disc.
titin
binds each thin myofilament laterally.
Nebulin
corresponding to a region with only the rod-like portions of the myosin molecule and no thin filaments.
H-Zone
bisects H zone that contains myomesin & creatine kinase.
M line
specialized for Ca2+ sequestration and release and surrounds the myofibrils.
sacroplasmic reticulum
a large complex with two identical heavy chains and two pairs of light chains.
myosin
thin, helical filaments that run between the thick filaments.
actin
an external sheath of dense irregular connective tissue, surrounds the entire muscle.
epimysium
a thin connective tissue layer that immediately surrounds each bundle of muscle fibers termed a fascicle.
perimysium
a very thin, delicate layer of reticular fibers and scattered fibroblasts that enveloped individual muscle fiber.
endomysium
