Lab 5: Muscle Reading Flashcards
1
Q
Main function of muscle
A
Contraction
2
Q
Movement and other functions for survival depend on:
A
- Quick contractions of short duration
- Long-lasting contractions
- Powerful, rhythmic contractions
3
Q
Smooth muscle
A
- Involuntary
- Centrally placed nucleus
- Corkscrew shape when contracted
- Found in hollow parts of the body: blood vessels, stomach, intestines, bladder
4
Q
Cardiac muscle
A
- Involuntary
- One centrally placed nucleus
- Specialized junction: intercalated discs
5
Q
Skeletal muscle
A
- Voluntary
- Multinucleated
- Structure order: Epimysium –> Perimysium –> Endomesium
- Contractile unit: Sarcomere
6
Q
Features found in skeletal muscle
A
- A bands (dark)
- I bands (light)
- Z disc
- H zone
- M disc
