Muscle System
The Muscular System: Skeletal Muscle Tissue
1. Fill in the characteristics of the three muscle types:
|Muscle Type |Cardiac |Skeletal |Smooth |
|Shape of cell |Branching Cell |Elongated Cell |Spindle Shaped Cell |
|# of nuclei |Single Central Nucleus |Multiple Peripheral Nuclei |Single Central Nucleus |
|Striations |Visible |Visible |Lack of Visible |
|Control |Involuntary |Voluntary |Involuntary |
2. What attaches muscles to bone? Tendons.
3. The whole muscle is composed of muscle cells (fibers) grouped in bundles called Fasicles.
4. Name the connective tissue coverings surrounding the following: Whole muscle-Epimysium Fascicles-Perimysium Muscle cell-Endomysium
5. Match the following three terms with their definitions: Sarcolemma -plasma membrane of muscle cell Sarcoplasmic reticulum - plasma membrane of muscle cell Cytosol - intracellular fluid around organelles
6. Match the following three terms with their definitions: Terminal cisternae - part of sarcoplasmic reticulum—stores calcium ions T-tubules - part of sarcolemma—carries action potential Triad - T-tubule + 2 terminal cisternae 7. Myofibrils consist of contractile proteins called myofilaments. Name the two types and what they’re composed of: Thin filament composed of protein actin Thick filament composed of protein myosin
8. Arrangement of myofilaments. Give the letter name of each band: Dark band ( A band Light band ( I band Match two definitions with each band: I Band - contains only thin filaments A Band- contains both thick
1. Fill in the characteristics of the three muscle types:
|Muscle Type |Cardiac |Skeletal |Smooth |
|Shape of cell |Branching Cell |Elongated Cell |Spindle Shaped Cell |
|# of nuclei |Single Central Nucleus |Multiple Peripheral Nuclei |Single Central Nucleus |
|Striations |Visible |Visible |Lack of Visible |
|Control |Involuntary |Voluntary |Involuntary |
2. What attaches muscles to bone? Tendons.
3. The whole muscle is composed of muscle cells (fibers) grouped in bundles called Fasicles.
4. Name the connective tissue coverings surrounding the following: Whole muscle-Epimysium Fascicles-Perimysium Muscle cell-Endomysium
5. Match the following three terms with their definitions: Sarcolemma -plasma membrane of muscle cell Sarcoplasmic reticulum - plasma membrane of muscle cell Cytosol - intracellular fluid around organelles
6. Match the following three terms with their definitions: Terminal cisternae - part of sarcoplasmic reticulum—stores calcium ions T-tubules - part of sarcolemma—carries action potential Triad - T-tubule + 2 terminal cisternae 7. Myofibrils consist of contractile proteins called myofilaments. Name the two types and what they’re composed of: Thin filament composed of protein actin Thick filament composed of protein myosin
8. Arrangement of myofilaments. Give the letter name of each band: Dark band ( A band Light band ( I band Match two definitions with each band: I Band - contains only thin filaments A Band- contains both thick