Chapter 3 Cardio Flashcards
1
Q
The heart is made up of?
A
Cardiac Myocytes
2
Q
What Ion is needed to for contractility of the heart to take place?
A
Calcium
3
Q
Cell Membrane of the heart called?
A
Sarcolemma
4
Q
Structure that has components necessary for heart to contract?
A
Sarcomere (Myosin-Actin)
5
Q
The structure where calcium is stored for contractility?
A
Sarcoplasmic Reticulum (SR)
6
Q
What type of filaments are Actin and Myosin? What muscular pattern do the form?
A
Myosin is thick, Actin thin. Striated pattern only found in cardiac muscle.
7
Q
Each cardiac muscle is separated by what and contains what within it?
A
They are separated by intercalated disks, which have gap junctions.
8
Q
What is it called when myosin uses pivoting head to draw the actin allowing them both to contract?
A
Cross- bridge cycling
