Answer:
They look a little bit different. SA cells contain fewer mitochondria, fewer myofibers, and a smaller sarcoplasmic reticulum. This means that the SA node cells are less equipped to contract compared to the atrial and ventricular cells.
searching
Explanation:
is the best way to find and search for the fossil
B
the tendency of the body to maintain inner balance despite changes in external conditions
Ear Damage this would affect the individuals hearing aid there by making it difficult to hear clearly
