The Occipital Lobe is responsible for processing vision. The Frontal Lobe controls emotions in its prefrontal cortex.

When the cerebellum is depressed (such as from alcohol use), the ability most typically impaired would be the one to walk in a straight line because the cerebellum controls and coordinates muscle skills. 

The ability to think abstractly is controlled by the frontal lobe, the ability to process visual information is controlled by the occipital lobe, ability to incoporate new memories into a web of old knowledge is controlled by the hippocampus, and the ability to feel emotion is controlled by the amygdala. 

CAT or CT scans use the densities of tissues in order to produce a 3D image of the brain's structures (but not waves or activity), which can then be used to find tumors. 

EEGs detect electrical activity in the brain and are often used in sleep research. fMRIs detect brain activity by showing blood flow in the brain. PET scans detect brain activity by showing how much of a certain substance is being used in a certain part of the brain. Ultrasounds are not generally used for the brain and are most commonly used for fetal imaging. 

The hindbrain is the most basic and essential part of the brain because it controls the simplest biological functions that sustain our lives, such as respiration and heartbeat. The hindbrain is made up of structures such as the medulla and the cerebellum. The other two major areas of the brain are the midbrain, which controls simple movements in conjunction with sensory input, and the forebrain, which controls complicated emotional and cognitive functions. 

The limbic system is commonly thought of as the hippocampus (memory), amygdala (emotion), thalamus (sensory information), and hypothalamus (basic drives, homeostasis).

Each other answer choice had one wrong structure in the list. The temporal lobe controls hearing and language, the cerebellum controls basic motor skills, the tectum controls orientation in a new environment, and the medulla helps control heart beat and respiration. 

The cerebellum resembles the much larger cerebrum. It makes up  of the brain's volume and has two hemispheres. The cerebelum's primary function is to regulate muscle control and activity.

The central nervous system is composed of the brain and spinal cord. The peripheral nervous system is composed of the somatic and autonomic nervous systems. The autonomic nervous system is composed of the sympathetic and parasympathetic nervous systems. 

The sympathetic nervous system prepares the body for action and mobilizes energy resources. This is considered the flight or fight reaction. 

The hindbrain is composed of pons, medulla, spinal cord, reticular formation, and cerebellum. The corpus callosum is part of the forebrain. 

The reticular formation is responsible for the arousal system but not heartbeat, movement, hunger and thirst.