1. Insertion
14. The point of
attachment of a muscle
on the moving bone.
2. Origin
10. The point of
attachment of a muscle
on the non-moving bone.
3. Direct
attachment
23.Muscles attach to the
bone itself.
4. Indirect
attachment
11.Muscles attach to the
bone by way of a tendon.
5.
Endomysium
26. Innermost membrane
in a muscle; encases
individual myofibers
6.
Perimysium
28.Middle membrane in a
muscle; encases fascicles
7. Epimysium
8. Fascicle
34. Outermost membrane
in a muscle; encases the
entire muscle
22. Bundle of myofibers
9. Myofiber
4. Muscle cell
10. Myofibril
30. Contracting organelle
in a myofiber
11.
Multinucleate
25. Having more than
one nucleus
12.
Sarcoplasm
36. Cytoplasm of the
myofiber
13. Myoglobin
17. Oxygen bonding
molecule found in the
sarcoplasm of a myofiber
14. Parallel
6. Fascicles run with the
long axis of the muscle
15. Bipennate
13. Fascicles insert into a
midline tendon from both
sides
16.
Convergent
24. Fascicles angle from
a broad origin to a narrow
insertion
17. Circular/
Sphincter
27. Fascicles are
arranged in concentric
rings around an opening.
18. Pennate
37. Fascicles insert into a
midline tendon from only
one side.
19.
Mitochondria
20.
Sarcolemma
21. T tubule
33.Organelles which
make energy called ATP
9. Cell membrane of a
myofiber
38. Indented portion of the
sarcolemma which carries an
electrical impulse deep into the
myofiber.
22.
Sarcoplasmic
reticulum
32. Organelle in a
myofiber which stores
calcium ions.
23. Motor end
plate
8. Axonal ending of a
motor neuron
24. Synaptic
vesicles
35.Organelles in the axon
which contain ACh.
25. Synaptic
cleft
1. A gap found between
the motor axonal ending
and a myofiber.
26. Junctional
folds
20. Specific portion of the
sarcolemma, under the axonal
ending, in which ACh receptors
are found
27. Calcium
ions
39. Needed to bond to
the troponin complex to
allow actin and myosin to
slide
28.
Neurotransmitter
12. Chemical messenger
made and released by the
nervous system at axonal
endings.
29. Sarcomere
5. The contracting unit in
muscle tissue made of 2 actin
brackets and 1 myosin fiber
30. Thin
filament
19. Made of actin,
tropomyosin, and
troponin
31. Thick
filament
2. Made of myosin
32. Actin
molecules
15. Have binding sites for
myosin heads
33. Troponin
complex
21. Binds to actin,
tropomyosin, and calcium
ions
34.
Tropomyosin
16. Long thin filament which
holds actin molecules together
and covers actin’s active sites.
35.
Myofilament
36.
Depolarization
31. Actin or myosin
7. Sodium ions enter the
cell
37.
Repolarization
18. Potassium is pumped
out of the cell.
38.
Acetylcholinesterase
3. Destroys acetylcholine
to stop the contraction
39.
Acetylcholine
29. Neurotransmitter used
to transmit messages from
motor neurons to myofibers