Muscle Structural Organization Flashcards
1
Q
Muscle structure components
A
- Endomysium
- Fascicle
- Perimysium
- Epimysium
2
Q
Endomysium
A
more delicate connective tissue that surrounds the muscle fiber
3
Q
Fascicle
A
bundles of muscle fibers
4
Q
Perimysium
A
connective tissue surrounding each fascicle in muscle
5
Q
Epimysium
A
external sheath of dense connective tissue of muscle
6
Q
How do the blood vessels and nerve endings penetrate the muscle ?
A
- Penetrate the muscle within the connective tissue in endomysium
- Capillaries important for nutrients and removal of waste
7
Q
Muscle spindles
A
- Stretch receptors in middle of muscle fiber
- Have intrafusal fibers that detect changes in length of the surrounding striated muscle fibers
8
Q
Golgi tendon organ
A
- Detect changes in tension within tendons produced by muscle contraction
- Inhibit motor nerve activity if tension becomes excessive
9
Q
What regulates muscular contractions?
A
Afferent nerve fibers relay information to CNS for regulation
