Cardiac Muscle Tissue Flashcards
1
Q
Where is cardiac muscle tissue found?
A
Only in the heart
2
Q
What is fact #1 about cardiac muscle tissue?
A
It is much smaller than skeletal muscle fibers
3
Q
What is fact #2 about cardiac muscle tissue?
A
Usually has a single nucleus per cell
4
Q
Why does cardiac muscle appear striated?
A
It appears striated because of actin and myosin filaments
5
Q
What are Intercalated discs?
A
Special attachment site to connect the cells
6
Q
Why can’t cardiac muscle be repaired?
A
Because it lacks stem cells so damaged muscle will be permanent
7
Q
What is fact #3 about cardiac muscle tissue?
A
It is involuntary
8
Q
What is fact #4 about cardiac muscle tissue?
A
Pacemaker cells set rate of contraction
