Sarcoplasmic Reticulum Quiz

What is the sarcoplasmic reticulum closely related to?

• Blood vessels

• Myofibrils

• Muscle fibers

• Nerve endings

Where does the reticulum form parallel tubules?

• H-band

• I-band

• A-band

• Z-line

What do the tubules unite at the level of H-band form?

• Triads

• Fenestrated cisternae

• Transverse tubules

• Terminal cisternae

What is formed at the A-I junction?

• Z-line

• Terminal cisternae

• Sarcoplasmic reticulum

• Myofibrils

What extends from the sarcolemma?

• A-band

• Fenestrated cisternae

• Transverse tubules

• Myofibrils

What structure is formed by the transverse tubules and terminal cisternae?

• Duo

• Triad

• Quad

• Cisternae

What type of junction is present between the transverse tubules and terminal cisternae?

• Synapse

• Tight junction

• Gap junction

• Desmosome

What is the primary function of the sarcoplasmic reticulum?

• Signal transmission

• Energy production

• Protein synthesis

• Calcium storage

What is the arrangement of the sarcoplasmic reticulum at the Z-line?

• Only at the I-band

• Different from A-band

• Similar to A-band

• Non-existent

What is the shape of the terminal cisternae?

• Cylindrical

• Triangular

• Fenestrated

• Flat