3b In Class Quiz

The primary connections of each hemisphere are to the opposite side of the body. This is because the brain is crossed wired, meaning that the left hemisphere controls the right side of the body and the right hemisphere controls the left side of the body. This is why damage to one side of the brain can result in motor or sensory deficits on the opposite side of the body.

An injury to the Broca's area of the brain would affect one's speech. The Broca's area is responsible for the production of speech and language comprehension. Damage to this area can lead to difficulties in forming words and sentences, resulting in speech impairments such as aphasia. Other functions such as eye-hand coordination, hearing, and motor skills are not directly associated with the Broca's area, making them less likely to be affected by an injury to this specific brain region.

Wernicke's area, located in the temporal lobe, is responsible for understanding language. It plays a crucial role in language comprehension and processing. Damage to this area can result in language comprehension difficulties, such as difficulty understanding spoken or written words, and can lead to a condition known as Wernicke's aphasia. Therefore, Wernicke's area is essential for the ability to understand and comprehend language.

Split brain surgery, also known as corpus callosotomy, is a surgical procedure that involves cutting the corpus callosum, the bundle of nerves that connects the left and right hemispheres of the brain. This surgery is primarily used to treat severe cases of epilepsy, particularly those that are resistant to medication. By severing the connection between the hemispheres, split brain surgery can help reduce the spread of epileptic seizures from one side of the brain to the other, thereby reducing their frequency and severity.

The corpus callosum is a collection of axons that connect the right and left hemispheres of the brain. It allows for communication and coordination between the two hemispheres, enabling them to work together and share information. The other options, cerebral hemisphere and corporal callosum, are not accurate terms and do not refer to the specific structure described in the question.

The two hemispheres of the brain are connected and communicate with each other through a structure called the Corpus Callosum. This thick band of nerve fibers allows for the transfer of information and coordination between the left and right hemispheres. It plays a crucial role in integrating and coordinating various functions of the brain, such as language, memory, and motor skills. Without the Corpus Callosum, the two hemispheres would not be able to effectively communicate and work together.

The cerebellum is responsible for controlling movement, balance, and posture. It receives information from various parts of the brain and sensory systems, and then coordinates muscle activity to ensure smooth and coordinated movements. Damage to the cerebellum can result in difficulties with coordination, balance, and posture. The cerebrum, on the other hand, is responsible for higher cognitive functions such as thinking, memory, and perception. The term "balanced brain" is not a recognized structure and does not accurately describe the role of the cerebellum.

The cerebrum is the largest part of the brain and is responsible for higher cognitive functions such as thinking, memory, and voluntary movements. It is divided into two hemispheres and is involved in processing sensory information, controlling motor functions, and coordinating complex behaviors. The cerebrum also plays a crucial role in language, problem-solving, and decision-making.

The amygdala is closely related to strong emotions. It plays a crucial role in processing and regulating emotions such as fear, aggression, and pleasure. It is responsible for the formation of emotional memories and the activation of the fight-or-flight response. Damage or dysfunction in the amygdala can lead to difficulties in emotional processing and regulation.

The fingertips would have more of the sensory or motor cortex devoted to their area of the body. This is because the fingertips are highly sensitive and have a large number of sensory receptors, allowing for precise touch and manipulation. The brain dedicates more neural resources to areas that require fine motor control and have a high density of sensory information, such as the fingertips.

The angular gyrus is the connection between the language centers and the visual cortex in the brain. It is responsible for integrating visual information with language processing, allowing us to understand written words and symbols. Damage to the angular gyrus can result in difficulties with reading, writing, and comprehension.

The occipital lobe is related to vision. It is located at the back of the brain and is primarily responsible for processing visual information received from the eyes. This lobe contains the primary visual cortex, which is involved in interpreting visual stimuli and forming visual perceptions. Damage to the occipital lobe can result in visual impairments and difficulties in recognizing objects or faces.

PET stands for Positron Emission Tomography. It is a technique used to visualize the activity of the brain by injecting a radioactive substance, such as glucose, into the body. The radioactive substance emits positrons, which collide with electrons in the brain tissue, producing gamma rays. These gamma rays are detected by a PET scanner and used to create images of the brain, with different colors representing different levels of brain activity. In this case, the doctor suspects brain damage in Buzz, so PET is being utilized to identify any abnormal brain activity caused by the accident.

The brain stem is responsible for automatic survival functions such as breathing, heart rate, and blood pressure regulation. It connects the brain to the spinal cord and controls basic bodily functions necessary for survival. The reticular formation, thalamus, and hippocampus are also important brain structures, but they are not primarily responsible for automatic survival functions.

The thalamus is known as the brain's sensory switchboard because it acts as a relay station for sensory information traveling to and from the cerebral cortex. It receives sensory signals from various parts of the body and relays them to the appropriate areas of the brain for further processing. Additionally, the thalamus plays a crucial role in regulating consciousness, sleep, and alertness. Therefore, it is responsible for directing and filtering sensory information, making it the correct answer in this case.