Question

somatic cells are... (ex: skin, muscle, blood, etc.)

Answer 1

Somatic cells are the non-reproductive cells that make up the tissues and organs of an organism. They include cells of the skin, muscle, blood, liver, bone, nerves (mostly post‑mitotic), and many others.

Key points
- Function: form the body’s structure and perform its physiological functions.
- Ploidy: in humans, somatic cells are usually diploid (two sets of chromosomes, 46 total).
- Division: they divide by mitosis to make more somatic cells.
- Contrast with germ cells: somatic cells are not involved in producing sperm or eggs (gametes are haploid and arise from germ cells via meiosis).
- Mutations: somatic mutations affect only the individual and can lead to diseases like cancer; they are not passed to offspring (except in rare scenarios).
- Exceptions/notes: some somatic cell types are enucleated or largely nondividing (e.g., mammalian red blood cells lack nuclei; neurons and some muscle cells are largely post‑mitotic).

Examples: skin epithelial cells, skeletal muscle fibers, cardiac myocytes, red and white blood cells, hepatocytes (liver), osteocytes (bone), glial cells.