Nerve tissue and muscle tissue structure Flashcards
Nerve is made up of
fascicles that are made up of unmyelinated and myelinated nerve fibers
nerves are bounded by…
epineurium
nerve fascicles are bounded by…
perineurium
nerve fibers are bound by…
endoneurium and then myelin sheath
skeletal muscle is made up of…
fascicles that are made up of muscle fibers that are made up of myofibrils that are made up of myofilaments
skeletal muscle is bound by…
epimysium which is a dense irregular CT
muscle fascicles are bound by…
perimysium which is a dense irregular CT
muscle fibers are bound by…
areolar CT endomysium and then sarcolemma
deep fascia
dense irregular connective tissue that connects tendon and skeletal muscle
Myofibrils function
muscle contractions from sarcomere
- H-zone disappears
2 types of myofilaments
thin (actin) and thick (myosin)
filament(thick and thin) filament organization
Z-disc is the center of thin filaments
Z-disc to Z-disc is a sarcomere
H-zone is the center of the thick filament
M-line is dead center of the H-zone
I-band is a section of thin filament
A-band is a section of thick filament
neuromuscular junction
the region where the motor neuron comes in close contact with the muscle fiber’s sarcolemma
