The vertebrae are a part of which of the following body systems in humans?

Spinal cord

The correct answer is Option (4) – Spinal cord

The vertebrae are part of the spinal column, which is an integral component of the skeletal system in humans. The skeletal system provides structural support to the body, protects vital organs, facilitates movement, and serves as a site for hematopoiesis (blood cell production) in the bone marrow.

Specifically, the vertebrae are the individual bones that make up the spinal column or backbone. They are stacked on top of one another, forming a flexible and protective structure that surrounds and supports the spinal cord. The spinal cord is a crucial part of the nervous system, transmitting signals between the brain and the rest of the body, allowing for sensory perception and motor control.