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Histology- Muscle Tissue

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Histology- Muscle Tissue 1st Year

Question 1 of 26

1

By muscle contraction the length of the I-discus is diminished whereas the A-discus is unchanged.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 26

1

"Sacromere" is a concept designated to the part of the myofibril between two Z-lines.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 26

1

Leiomyofibril is the cell specific for the striated muscle tissue.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 26

1

The intercalated discs are localized in the cardiac muscle tissue.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 26

1

Z-Line (telophragma) is in the middle of the I-discus of the myofibril.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 26

1

The loose connective tissue plays a role of inter-cellular substance for the muscle tissue.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 26

1

Z-line (telophragma) is in the middle of the A- discus of the myofibril

Select one of the following:

  • True
  • False

Explanation

Question 8 of 26

1

The myofibril is:

Select one of the following:

  • Specialized cell organelle

  • Cell

  • Syncytium

  • Symplast

Explanation

Question 9 of 26

1

Under electron microscope in H - band of myofibril are observed:

Select one of the following:

  • Thin myofilaments

  • Thick myofilaments

  • Thin and thick myofilaments

  • No myofilaments

Explanation

Question 10 of 26

1

The nuclei of the striated myofibre are localized:

Select one of the following:

  • In the central part of the cytoplasm

  • Sublemmal (under the plasma membrane)

  • Without strictly localization

  • Along the bundles of myofibrils

Explanation

Question 11 of 26

1

The intercalated discs between the cardiomyocytes are localized:

Select one of the following:

  • Step-like

  • Under the plasma membrane

  • Without strictly localization

  • Along the bundles of cardiomyofibrils

Explanation

Question 12 of 26

1

Under electron microscope in I-disc of the myofibril are observed:

Select one of the following:

  • Thin myofilaments

  • Thick myofilaments

  • Thin and thick myofilaments

  • No myofilaments

Explanation

Question 13 of 26

1

The cardiomyocytes bind together through:

Select one of the following:

  • Interdigitation ("zipper" interlocking)

  • Intercalated discs

  • Hemi-desmosomes

  • Basal lamina

Explanation

Question 14 of 26

1

Under electron microscope in A-disc of the myofibril are observed:

Select one of the following:

  • Thin myofilaments

  • Thick myofilaments

  • Thin and thick myofilaments

  • No myofilaments

Explanation

Question 15 of 26

1

The cardiomyofibrils in the cells of impulse-conductive muscle tissue:

Select one of the following:

  • Are scanty and centrally placed in the cell

  • Fill the whole cell cytoplasm

  • Are scanty and peripherally placed in the cell

  • Are lacking

Explanation

Question 16 of 26

1

The sacrosomes in the muscle tissue cells are:

Select one of the following:

  • Phagesomes

  • Mitochondria

  • Lysosomes

  • Cell inclusions

Explanation

Question 17 of 26

1

Myoepithelial cells are localized

Select one of the following:

  • In the wall of some acini

  • In the blood vessels wall

  • In the skeletal muscles

  • In the wall of the semi-niferous tubules

Explanation

Question 18 of 26

5

The most specific features of the muscles tissue are:

Select one or more of the following:

  • Abundant intercellular substance

  • Numerous blood vessels and nerve endings

  • Lack of proper intercellular substance

  • Presence of three types of microscopic organisation

  • Presence of tonofibrils

Explanation

Question 19 of 26

5

Which of the following is specific for the striated skeletal muscle tissue:

Select one or more of the following:

  • Presence of striated myofibrils

  • Presence of smooth myofibrils

  • Symplast type of organisation

  • Syncytial type of organisation

  • Origin from the mesoblast

Explanation

Question 20 of 26

5

Which of the following is specific for the smooth muscle tissue:

Select one or more of the following:

  • Presence of striated myofibrils

  • Presence of smooth myofibrils

  • Cellular type of organisation

  • Origin from the mesenchyme

  • Origin of the mesoblast

Explanation

Question 21 of 26

5

Which of the following characteristics are specific for cardiac striated muscle tissue

Select one or more of the following:

  • Presence of smooth myofibrils

  • Presence of cardiac myofibrils

  • Cellular type of microscopic organisation

  • Symplast type of microscopic organisation

  • Syntical type of microscopic organisation

Explanation

Question 22 of 26

5

The intercalated discs of the cardiac muscle tissue consists of:

Select one or more of the following:

  • "Zipper" interlocking (interdigitatio)

  • Gap junctions (nexus)

  • Tight junctions (zonula occludens)

  • Hemi-desmosomes

  • Desmosomes

Explanation

Question 23 of 26

1

Fill the blank space to complete the text.

Under the light microscope - (H- E staining), bundles of striated cylindrical structures with numerous peripherally placed nuclei are visible.
What type of muscle tissue is this?
Ans:

Explanation

Question 24 of 26

1

Fill the blank space to complete the text.

Under the light microscope - (H- E staining), long cells with centrally placed spherical nuclei, divided in two or more branches at its ends appear. Between the adjacent cells, dark lines pass in an irregular, step-like manner.
What type of muscle tissue is this?
Ans:

Explanation

Question 25 of 26

6

Select from the dropdown lists to complete the text.

Associate each type of muscle tissue with its corresponding features:
A/ smooth muscle tissue ( b, a, c, d, e, f ), ( d, a, b, c, e, f )
B/ cardiac striated muscle tissue ( c, a, b, d, e, f ), ( f, a, b, c, d, e )
C/ skeletal striated muscle tissue ( a, b, c, d, e, f ), ( e, a, b, c, d, f )

a/ presence of striated myofibrils
b/ presence of smooth myofibrils
c/ presence of cardiac myofibrils
d/ cellular type of microscopic organization
e/ symplast type of microscopic organization
f/ syncytial type of microscopic organization

Explanation

Question 26 of 26

1

Fill the blank space to complete the text.

Under the light microscope - (H-E. staining). elongated (spindle-shaped) cells with centrally placed nuclei. arranged in layers are observed.
What type of muscle tissue is this?
Ans:

Explanation

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