If a patient has suffered an injury to the back of the head, which part of the brain is likely affected?

The occipital lobe is primarily responsible for visual processing, and it is located at the back of the brain. An injury to this area can lead to visual disturbances or loss, as the occipital lobe houses the primary visual cortex. Because the question specifies that the injury is located at the back of the head, the occipital lobe is the area most likely affected.

The other parts of the brain mentioned—frontal, parietal, and temporal lobes—are located in different areas and have distinct functions. The frontal lobe is associated with higher cognitive functions and motor control, the parietal lobe processes sensory information such as touch and temperature, and the temporal lobe is involved with auditory processing and memory. Given the specific location of the injury, the occipital lobe's role aligns directly with the area impacted.