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Anatomy lab #2
| Question | Answer |
|---|---|
| perimysium | connective tissue ensheathing a bundle of muscle fibers |
| fasicle | bundle of muscle cells |
| sarcomere | contraile unit of muscle |
| fiber | a muscle cell |
| endomysium | thin reticular connective tissue investing each muscle cell |
| sarcolemma | plasma membrane of the muscle fiber |
| myofibril | a long filamentous organelle with a banded appearance found within muscle cells |
| myofilaments | actin- or myosin-containing structure |
| tendon | cord of collagen fibers that attaches a muscle to a bone |
| 3 reasons connective tissue wrappings of skeletal muscle are important | provide route for entry and exit of nerves and blood vessels that serve the muscle fibers. 2. provide strength to muscle as a whole. 3. support and bind muscle fibers |
| why are there more indirect- that is, tendonious- muscle attachments to bone than there are direct attachments | because tendons are tough collagenic connective tissue, they span rough bony prominces that would destroy more delicate muscle tissue. |
| how does an aponeurosis differ from a tendon structurally? | it forms in sheets, instead of bands. |
| how is an aponeurosis functionally similar to a tendon | both capable of resisting considerable tension. |
Created by:
tomtom90