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Creado por Diamond Sapphire
hace casi 4 años
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Pregunta | Respuesta |
What type of muscle is this? | Skeletal muscle |
What type of muscle is this? | Cardiac muscle |
What type of muscle is this? | Smooth muscle |
The alternating dark and light bands represent what functional unit of skeletal muscles? | Sarcomeres |
What connective tissue surrounds a group of muscle cells to form a fascicle. | Perimysium |
dense connective tissue that surrounds the entire muscle | Epimysium |
thin layer of connective tissue that surrounds each muscle cell. | Endomysium |
Within the sarcomere, the main dark band is which band? | The A band |
Within the sarcomere, the main light bad is which band? | The I band |
Within the sarcomere, the light band in the middle of the A band is what? | The H zone |
Within the sarcomere, the dark band in the middle of the H zone is what? | The M band |
Within the sarcomere, what is the dark line that runs through the I band? | The Z line |
A single sarcomere runs from.... | Z line to Z line |
During contraction, the I band ___, the Z lines move ___, and the A band ___ | Narrows; closer together; remains relatively unchanged |
What are T-tubules? | Small, tubular invaginations of the muscle cell membrane deep into the cells that intertwine among the myofibrils |
What is a triad? Where are they found? | Intersection of 2 terminal cisternae lie alongside to each T-tubule Found in skeletal muscles |
specialized junctions that connect the individual cells within cardiac muscles | Intercalated disk |
What are the 3 types of cell junctions present within intercalated disks? | Desmosomes, fascia adherens, and gap junctions |
Adjacent cells have a lot of ___ to communicate to each other | Gap junctions |
Smooth muscles have a rudimentary SR but have no ___ | T-tubules (and no striations) |
In smooth muscle, the nucleus is generally ___ located | Centrally |
Skeletal muscle fiber is multinucleated with the nuclei ___ located | Peripherally |
Cardiac muscle has a single nucleus that is ___ located | Centrally |
Skeletal muscles are not capable of regeneration on their own and require the help of which cells? | Satellite cells |
T/F Cardiac muscles are capable of regeneration | False |
T/F Smooth muscles are capable of regeneration | True |
Sarcolemma | muscle cell membrane |
Sarcoplasm | Cytoplasm of muscle cell |
Sarcoplasmic reticulum | Smooth endoplasmic reticulum |
Sarcosomes | Mitochondria of muscle cell |
Muscle “fibers” | muscle cells or MYOCYTES |
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