The brain is divided down the middle, from front to back, into two __. A. cerebellums B. cortexes C. hemispheres D. lobes
The correct answer and explanation is:
The correct answer is C. hemispheres.
The brain is divided down the middle into two hemispheres. These hemispheres are the left and right halves of the brain, which are separated by a deep groove called the longitudinal fissure. Each hemisphere is responsible for different functions, although there is some overlap. The left hemisphere typically controls the right side of the body, and the right hemisphere controls the left side. Additionally, the left hemisphere is often associated with language processing, logic, and analytical thinking, while the right hemisphere is more involved in spatial awareness, creativity, and emotional processing.
The brain’s hemispheres are connected by the corpus callosum, a bundle of nerve fibers that allows communication between the two sides. This connection is vital for coordinating complex functions that require both hemispheres to work together.
The brain’s structure can be divided further into regions called lobes, which are parts of the brain located in each hemisphere. These lobes include the frontal lobe, parietal lobe, temporal lobe, and occipital lobe. Each lobe has specific roles in sensory processing, motor control, cognition, and emotion.
It’s important to note that while the brain is divided into hemispheres, it is not a rigid separation of functions. Brain functions are often distributed across both hemispheres, and the degree of specialization varies among individuals.
The term cortex refers to the outer layer of the brain, known as the cerebral cortex, which is involved in higher-level functions such as thinking, perception, and decision-making. Cerebellum refers to a separate part of the brain that is primarily responsible for motor control and coordination, not a division of the brain’s overall structure.