Cardiac muscle Flashcards
1
Q
Where is the cardia muscle only found?
A
In the heart
2
Q
What do cardiac muscles consist of?
A
Branching striated cells that interconnect in networks
3
Q
Describe the cardiac muscle
A
Sarcoplasmic reticulum is not well developed: does not store much calcium
Transvers tubules supply extra Ca from extracellular fluid so cardiac muscle cell twitches last longer
4
Q
What dies cardiac muscle do?
A
Self exciting and rhythmic
Creating a pattern of contraction and relaxation
5
Q
What are complex membrane junction called
A
intercalated discs
6
Q
What do intercalated discs do?
A
Join cells and transmit the force of contraction from one cell to the next
