Question

which of the following brain - structures has its major growth period before birth and is responsible for basic bodily functions, such as? select one: a. brain stem b. cerebrum c. frontal lobe d. limbic system 10 scientists have concluded that the cerebellum grows most rapidly select one: a. during middle childhood. b. between 2 and 5 years of age. c. during the first year of life. d. during adolescence. 11 the brain select one: a. represents the least developed organ of the nervous system at birth. b. develops from a long hollow tube into a spherical mass of cells. c. develops at even pace, rather than in fits and starts. d. begins to develop only after the brain stem and spinal cord have developed completely.

Explanation:

1. The brain - stem has its major growth period before birth and is responsible for basic bodily functions like breathing and heart - rate regulation.
2. The cerebellum grows most rapidly during the first year of life, which is crucial for motor control and balance development.
3. The brain develops from a long hollow tube (neural tube) into a spherical mass of cells during embryonic development.

Answer:

1. a. Brain stem
2. c. during the first year of life
3. b. develops from a long hollow tube into a spherical mass of cells