ANATOMY

GENERAL ANATOMY

MUSCLE ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Skeletal muscle cells are-
A
uni-nucleated
B
multi-nucleated
C
nucleated
D
bi-nucleated
Explanation: 

Detailed explanation-1: -During development of skeletal muscle tissue, myoblasts differentiate and fuse together to form multinucleated myofibers, which are analogous to myotubes in vitro. After myofiber formation during embryogenesis, the size of individual myofibers greatly increases during the immediate postnatal period.

Detailed explanation-2: -Skeletal muscle cells are long, cylindrical, and striated. They are multi-nucleated meaning that they have more than one nucleus. This is because they are formed from the fusion of embryonic myoblasts. Each nucleus regulates the metabolic requirements of the sarcoplasm around it.

Detailed explanation-3: -Unlike most cells in the human body, skeletal muscle cells are multinucleate (having more than one nucleus per cell).

Detailed explanation-4: -Therefore, cardiac muscle is functionally multinucleated and skeletal (voluntary) muscle are true multinucleated. So, the correct option is ‘Cardiac muscle’.

Detailed explanation-5: -While a majority of cells in the human body only possess a single nucleus, there are some cells which are multinucleated, possessing two or more nuclei. Some of these cell types include hepatocytes (the main functional cells in the liver), osteoclasts (cells that break down bone tissue), and skeletal muscle fibers.

There is 1 question to complete.