2472356
Pregunta 1
Pregunta
By muscle contraction the length of the I-discus is diminished whereas the A-discus is unchanged.
Respuesta
- True
- False
Pregunta 2
Pregunta
"Sacromere" is a concept designated to the part of the myofibril between two Z-lines.
Respuesta
- True
- False
Pregunta 3
Pregunta
Leiomyofibril is the cell specific for the striated muscle tissue.
Respuesta
- True
- False
Pregunta 4
Pregunta
The intercalated discs are localized in the cardiac muscle tissue.
Respuesta
- True
- False
Pregunta 5
Pregunta
Z-Line (telophragma) is in the middle of the I-discus of the myofibril.
Respuesta
- True
- False
Pregunta 6
Pregunta
The loose connective tissue plays a role of inter-cellular substance for the muscle tissue.
Respuesta
- True
- False
Pregunta 7
Pregunta
The myofibril is:
Respuesta
-
Specialized cell organelle
-
Cell
-
Syncytium
-
Symplast
Pregunta 8
Pregunta
Under electron microscope in H - band of myofibril are observed:
Respuesta
-
Thin myofilaments
-
Thick myofilaments
-
Thin and thick myofilaments
-
No myofilaments
Pregunta 9
Pregunta
The nuclei of the striated myofibre are localized:
Respuesta
-
In the central part of the cytoplasm
-
Sublemmal (under the plasma membrane)
-
Without strictly localization
-
Along the bundles of myofibrils
Pregunta 10
Pregunta
The intercalated discs between the cardiomyocytes are localized:
Respuesta
-
Step-like
-
Under the plasma membrane
-
Without strictly localization
-
Along the bundles of cardiomyofibrils
Pregunta 11
Pregunta
Under electron microscope in I-disc of the myofibril are observed:
Respuesta
-
Thin myofilaments
-
Thick myofilaments
-
Thin and thick myofilaments
-
No myofilaments
Pregunta 12
Pregunta
The cardiomyocytes bind together through:
Respuesta
-
Interdigitation ("zipper" interlocking)
-
Intercalated discs
-
Hemi-desmosomes
-
Basal lamina
Pregunta 13
Pregunta
Under electron microscope in A-disc of the myofibril are observed:
Respuesta
-
Thin myofilaments
-
Thick myofilaments
-
Thin and thick myofilaments
-
No myofilaments
Pregunta 14
Pregunta
The cardiomyofibrils in the cells of impulse-conductive muscle tissue:
Respuesta
-
Are scanty and centrally placed in the cell
-
Fill the whole cell cytoplasm
-
Are scanty and peripherally placed in the cell
-
Are lacking
Pregunta 15
Pregunta
The sacrosomes in the muscle tissue cells are:
Respuesta
-
Phagesomes
-
Mitochondria
-
Lysosomes
-
Cell inclusions
Pregunta 16
Pregunta
Myoepithelial cells are localized
Respuesta
-
In the wall of some acini
-
In the blood vessels wall
-
In the skeletal muscles
-
In the wall of the semi-niferous tubules
Pregunta 17
Pregunta
The most specific features of the muscles tissue are:
Respuesta
-
Abundant intercellular substance
-
Numerous blood vessels and nerve endings
-
Lack of proper intercellular substance
-
Presence of three types of microscopic organisation
-
Presence of tonofibrils
Pregunta 18
Pregunta
Which of the following is specific for the striated skeletal muscle tissue:
Respuesta
-
Presence of striated myofibrils
-
Presence of smooth myofibrils
-
Symplast type of organisation
-
Syncytial type of organisation
-
Origin from the mesoblast
Pregunta 19
Pregunta
Which of the following is specific for the smooth muscle tissue:
Respuesta
-
Presence of striated myofibrils
-
Presence of smooth myofibrils
-
Cellular type of organisation
-
Origin from the mesenchyme
-
Origin of the mesoblast
Pregunta 20
Pregunta
The intercalated discs of the cardiac muscle tissue consists of:
Respuesta
-
"Zipper" interlocking (interdigitatio)
-
Gap junctions (nexus)
-
Tight junctions (zonula occludens)
-
Hemi-desmosomes
-
Desmosomes
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