Ex 14: Microscopic Anatomy

Home > Preview

The flashcards below were created by user Kmagallon on FreezingBlue Flashcards.

  1. perimysium
    connective tissue ensheathing a bundle of muscle cells.
  2. fascicle
    bundle of muscle cells.
  3. sarcomere
    contractile unit of muscle.
  4. myofibril
    muscle cell
  5. endomysium
    thin reticular connective tissue surrounding each muscle cell.
  6. sarcoplasm
    plasma membrane of muscle fiber.
  7. fiber
    a long filamentous organelle with a banded appearance found within muscle cells.
  8. myofilament
    actin or myosin containing structure
  9. tendon
    cord of collagen fibers that attaches muscle to bone.
  10. list three reasons why the connective tissue wrappings of the skeletal muscle are important.
    supporting and binding the muscle fibers, providing strength to the muscle as a whole and to provide a route for the entry and exit of nerves and blood vessels that serve the muscle fibers.
  11. why are there more indirect- that is, tendinous- muscle attachmens to bone than there are indirect attachments?
    they can span rough bony prominences that would destroy the more delicate muscle tissues and because of their relatively small size, more tendons than muscles can pass over joints.
  12. how does an aponeurosis differ from a tendon structurally?
    tendons are strong and cord-like and attach muscle to bone; aponeurosis are sheet-like and attach muscle to muscle.
  13. how is an aponeurosis functionally similar to a tendon?
    Aponeuroses are thick membranes that separate muscles from one another. They are tough and resilient. Tendons are similar, in both function and composition, only they serve to connect muscles to bones. Both aponeuroses and tendons are capable of resisting considerable tension.
    • Sarcolema
    • sarcomere>>>I Band( in this part there is also Zdisc)>>A Band(between the A Band there is the H zone and between that there is the M line)>>> I Band (in between the Z disc)

    • Triad:
    • Terminal Cisternae of the SR
    • T Tubule
    • Tubules of the SR
    • Myofibrils
    • Mitochondrion
    • Epimysium
    • Endomysium
    • Blood Cell
    • Fascicle
    • Perimysium
    • Muscle Cell
  14. neuromuscular junction
    the junction between a motor neuron's axon and the muscle cell membrane
  15. motor unit
    a motor neuron and all of the the skeletal muscle cells it stimulates
  16. synaptic cleft
    the actual gap between the axon terminal and the muscle cell
  17. Ach- acetylcholine
    within the axon terminal are many small vesicles containing a neurotransmitter substance
  18. nerve impulse
    reaches the ends of the axon, the neurotransmitter is released and diffuses to the muscle cell membrane to combine with receptors there.
  19. contraction of the muscle cell occurs when
    the greater influx of sodium ions results in permeability of the membrane
    • Myelinated
    • Axon Terminal
    • Muscle Fiber
    • Vesicle Containing ACh
    • Mitochondrion
    • Synaptic Cleft
    • T Tubule
    • Nuclei of muscle fibers.
    • Muscle fibers, longitudinal view.
    • Muscle fibers, cross-sectional view.
    • Branch of an axon
    • Axon terminal at neuromuscular junctions
    • Muscle fibers

    • Epimysium
    • Perimysium
    • Endomysium (between individual muscle fibers)
    • Muscle fiber in middle of a fascicle
  20. skeletal muscle
    bulk of body's muscle and it is attached to the skeleton (or associated connective tissue structures). Transport and insulation.
    • thick(myosin) filament
    • Elastic (titin) filament
    • Thin (actin) filament

Card Set Information

Ex 14: Microscopic Anatomy
2013-10-21 10:32:39

anatomia 1
Show Answers:

What would you like to do?

Home > Flashcards > Print Preview