How is cardiac muscle similar to smooth muscle?

A. Both are striated

B. They share no similarities

C. They share no differences

D. Both have one central nucleus

C?

No. It's D. they are both uninucleated. Meaning having one nucleus.

Its D

c is not right

It's D (I've taken this exam.)

No, C is not the correct answer. The correct answer is D. Both cardiac muscle and smooth muscle have one central nucleus.

To understand this, let's break down the similarities between cardiac muscle and smooth muscle:

1. Striations: Both cardiac muscle and smooth muscle lack striations. Striated muscles have a striped appearance under a microscope due to the organization of actin and myosin filaments.

2. Central Nucleus: Both cardiac muscle and smooth muscle have one central nucleus. This means that the nucleus is located in the middle of the muscle cell, unlike skeletal muscle where the nuclei are located on the periphery.

While the central nucleus is a shared feature between cardiac muscle and smooth muscle, they have distinct differences as well. Cardiac muscle is striated, meaning it has a striped appearance due to the arrangement of actin and myosin filaments. Besides the central nucleus, smooth muscle lacks striations and has spindle-shaped cells.

So the correct answer is D. Both cardiac muscle and smooth muscle have one central nucleus.