Balance and coordinated movement are handled by the cerebellum. Located under the cerebrum at the back of the brain, it receives input from the vestibular system in the inner ear, as well as proprioceptive signals from muscles and joints and some visual information. The cerebellum compares the intended movement with what's actually happening and makes rapid adjustments to timing and force, helping you maintain balance, posture, and smooth, precise movements. The cerebrum governs conscious thought and voluntary actions, the diencephalon (thalamus and hypothalamus) relays and regulates many sensory and autonomic functions, and the brain stem manages essential life-sustaining processes and serves as a conduit between the brain and spinal cord.

The parietal lobe is best here because it handles sensory information from the body—touch, temperature, and pain—and helps integrate that input to guide movement. The primary somatosensory cortex in this lobe receives signals about touch, heat/cold, and pain, and it works with motor areas to coordinate movements of the hands, feet, and tongue. Language-related processing is linked near this region as well, which can relate to speech aspects, though the speech production centers lie mainly in the frontal lobe. In contrast, the frontal lobe centers are more about planning and executing movement and speech production, the temporal lobe centers are for hearing and smell, and the occipital lobe is for vision. So, for the combination of bodily sensation and movement, the parietal lobe fits best.

Double vision can occur during a transient ischemic attack because the brief drop in blood flow can temporarily disrupt the brain areas or nerves that coordinate eye movements. TIAs present with sudden, transient neurological symptoms that resolve as blood flow returns, and vision changes are a common category of these symptoms. While dizziness, slurred speech, and unsteady gait can also appear with TIAs, double vision specifically reflects involvement of the visual pathways or eye-movement control, making it a recognized symptom of a transient ischemic event. If sudden double vision occurs, it’s a warning sign to seek urgent medical attention due to the risk of a future stroke.

Maintaining stability through physiological processes is homeostasis. It’s the body's ability to keep internal conditions, like temperature, pH, and glucose, within tight limits despite changes outside or inside. This relies on sensors (receptors) that detect deviations, a control center that compares what is happening to a set point, and effectors that respond to restore balance. The whole system often works via negative feedback, where the response diminishes the initial change—for example, if you get too warm, you sweat and the body cools down; if you’re cold, you shiver to generate heat. Anatomy is the study of body structure, physiology is the study of how those structures function, and a control center is a part of the regulatory pathway, not the overall process itself.