Cardiac Cell Biology

Question 1

How is cardiac muscle similar to skeletal muscle?

Answer 1

Both have a basal lamina, are striated, have similar contractile proteins, and have a similar mechanism of contraction.

Question 2

How is cardiac muscle different from skeletal muscle?

Answer 2

1. Involuntary control
2. Myocytes are smaller
3. There are 1-2 centrally located nuclei (not 100)
4. Cardiac cells bifurcate, whereas skeletal cells only branch when they are sick
5. Cardiac tissue is very vascularized
6. Cardiac muscle has a lot of mitochondria
7. Cardiac cells have a lot of myogobin
8. Cardiac cells have a lot of lipid droplets
9. MB- creatine kinase and cTnl
10. Intercalated discs