DEP 4164 Exam 2 (A+ Graded)

Building the Brain correct answers Brain at birth only 1/4 to 1/3 adult volume Reaches 90% of adult weight (3 ½ lbs) by age 3. Almost at adult weight by age 6, but specific parts of brain continue to grow and develop into adulthood. Brain growth occurs in fits and starts (aka: brain growth spurts) Spinal Cord and Brain Stem correct answers (developed by birth) - Responsible for basic bodily functions such as breathing, heart rate, body temperature, and sleep-wake cycle Cerebellum correct answers (Grows faster during 1st year) - Maintains balance and motor coordination Cerebrum correct answers Divided into right and left hemispheres, with specialized functions Corpus Callosum correct answers Tough band of tissue that joins the two hemispheres Enables sharing information and coordinating commands Grows dramatically during childhood, reaching adult size by 10 years. Lateralization correct answers Specialization of the hemispheres (left=language, logical thinking; right=visual and spatial functions) Occipital Lobe correct answers Visual processing Parietal Lobe correct answers Integrating sensory info from body Temporal Lobe correct answers Interpret smells and sounds and is involved in memory Frontal Lobe correct answers Involved in a variety of higher order processes the cerebral cortex correct answers (the outer surface of the cerebrum) that control vision, hearing, and other sensory info grow rapidly in first few months after birth and mature by 6 months Smiling, babbling, crawling, walking, and talking reflect rapid development of brain (especially cerebral cortex) the frontal cortex correct answers responsible for abstract thought, mental associations, remembering, and deliberate motor responses grow very little during infancy and remain immature through adolescence. Neurons correct answers Nerve cells that send and receive information.