Question 1: Define the cerebrum and describe its primary functions.

Answer: The cerebrum is the largest part of the brain responsible for voluntary movements, sensory processing, reasoning, emotions, and memory.

Question 2: Explain how the cerebellum contributes to coordination and balance.

Answer: The cerebellum helps coordinate muscle movements and maintain balance by processing information from the sensory systems and the spinal cord.

Question 1: The average human brain weighs approximately 1.4 kilograms. If a person’s brain weighs 1,500 grams, what percentage of the average weight is this?

Answer: Approximately 107.14%

Question 2: If the total number of neurons in the human brain is about 86 billion, how many neurons are there per million neurons? Show your calculation.

Answer: 86,000 million neurons

Question 1: Describe a simple experiment to measure the effect of sleep deprivation on reaction time, including variables and safety precautions.

Answer: An experiment could involve testing reaction times of individuals after normal sleep and after sleep deprivation, measuring variables such as sleep duration (independent) and reaction time (dependent). Safety precautions include ensuring participants are not sleep-deprived to the point of harm and providing breaks as needed.

Question 1: In a study, the average number of neurons in the hippocampus was found to be 200 million in adults aged 25-35, but only 150 million in adults aged 60-70. What does this suggest about brain aging and memory capacity?

Answer: It suggests that neuron loss in the hippocampus occurs with age, which may contribute to decreased memory capacity in older adults.

Question 1: Describe the roles of the frontal lobe and occipital lobe in the brain.

Answer: The frontal lobe is involved in decision making, problem-solving, and voluntary movement, while the occipital lobe is primarily responsible for visual processing.

Question 2: Multiple Choice: Which part of the brain controls balance and coordination? A) Cerebrum B) Cerebellum C) Brainstem D) Hypothalamus

Answer:

Question 1: Explain how understanding brain structures has contributed to the development of treatments for neurological diseases such as Parkinson’s disease.

Answer: Understanding brain structures has helped identify affected areas, leading to targeted treatments like deep brain stimulation and medication to manage symptoms.