Which structures are part of the central nervous system?

The correct answer identifies specific structures that are indeed crucial components of the central nervous system (CNS). The CNS comprises the brain and spinal cord, which serve as the control center for processing and transmitting information throughout the body.

While the brain is often further divided into lobes, such as the frontal lobe, occipital lobe, and cerebellum, these specific areas are part of the larger structure of the brain, which is a central element of the CNS. Each of these lobes has distinct functions - the frontal lobe is involved in decision-making and problem-solving, the occipital lobe processes visual information, and the cerebellum plays a key role in coordination and balance.

In contrast, the other options do not include components of the CNS. The first choice lists the heart, lungs, and blood vessels, which are parts of the circulatory and respiratory systems. The second choice mentions the brain and spinal cord, which are central to the CNS, but incorrectly includes nerves, as these are part of the peripheral nervous system. Finally, the last option refers to muscles, ligaments, and tendons, which are components of the musculoskeletal system, not the nervous system at all. Thus, while the inclusion of