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WorksheetsSmooth Muscles Quiz
Total questions: 15
Worksheet time: 8mins
What shape are smooth muscle fibers?
Flat
Spindle-shaped
Cylindrical
Cuboidal
What is the range of length for smooth muscle fibers?
10um to 100um
20um to 500um
50um to 1000um
5um to 50um
Where is the nucleus located in smooth muscle fibers?
In the center of the wide portion
At the tapered ends
Scattered throughout
At one end
What structure allows adjacent smooth muscle fibers to attach?
Desmosomes
Nexuses
Tight junctions
Gap junctions
Which organelles are mainly located near the nucleus in smooth muscle fibers?
Mitochondria
Lysosomes
Centrioles
Peroxisomes
What is the function of caveolae in smooth muscle fibers?
Increase surface area
Contact with SER
Facilitate communication
Store calcium
From what do all muscle fibers derive?
Myoblasts
Fibroblasts
Stem cells
Satellite cells
Can skeletal and cardiac muscle fibers divide?
Yes, under stress
No, they lack centrosomes
Only in embryos
Yes, easily
What type of cells are satellite cells?
Differentiated muscle cells
Undifferentiated cells
Nerve cells
Connective tissue cells
What happens to satellite cells under certain conditions?
They divide and differentiate
They migrate
They die
They become fat cells
What is the primary role of the sarcoplasm in smooth muscle fibers?
Cell division
Protein synthesis
Energy storage
Filament organization
What is the shape of the nucleus in smooth muscle fibers?
Round
Spiral
Flat
Oval
What type of muscle fibers can divide?
Skeletal fibers
Cardiac fibers
Smooth fibers
All muscle fibers
What is found in the sarcoplasm of smooth muscle fibers?
Only ribosomes
Filaments and dense particles
Nuclei and organelles
Only mitochondria
What is the primary function of the Golgi apparatus in smooth muscle fibers?
Energy production
Packaging proteins
Protein synthesis
Lipid metabolism
