Smooth muscle Flashcards
1
Q
Describe the structure of smooth muscle cells?
A
Elongated with tapered ends
Have an undeveloped sarcoplasmic reticulum
2
Q
What do smooth muscle contain?
A
Thick and thin filaments but are arranged randomly
3
Q
What are the two types of smooth muscle?
A
Multiunit muscle
Visceral smooth muscle
4
Q
Where does multiunit smooth muscle occur?
A
In blood vessels and iris of they eye, fibres occur separately rather than as sheets
Stimulated by neurons and some hormones
5
Q
Where are visceral smooth muscle found?
A
In the walls of hollow organs and occur in sheets
Fibres stimulate one another and display rhythmicity
Accomplish peristalsis in tubular organs
