Ex 14: Microscopic Anatomy

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

    • Image Upload
    • Epimysium
    • Perimysium
    • Endomysium (between individual muscle fibers)
    • Muscle fiber in middle of a fascicle
  27. skeletal muscle
    bulk of body's muscle and it is attached to the skeleton (or associated connective tissue structures). Transport and insulation.
  28. Image Upload
    • Image Upload
    • thick(myosin) filament
    • Elastic (titin) filament
    • Thin (actin) filament
Card Set:
Ex 14: Microscopic Anatomy
2013-10-21 10:32:39

anatomia 1
Show Answers: