LC-BrainHW

The Brain Homework p.256 to 261.

Outline the parts and function of the four major parts of the brain: (1) cerebrum: The cerebrum is the largest portion of the brain that signals motor actions and is in charge of all other brain function. (2) Diencephalon: The diencephalon is the center part of the brain that contains the cerebral hemispheres, the third ventrical, the thalamus and the hypothalamus (3) Cerebellum: the trilobed structure that is responsible for the voluntary muscular actions of the body. (4) brain stem: connects the spine to the forebrain and the cerebrum (5) What is the function of the limbic system? The limbic system is an evolutionary ancient group of linked structures deep within the cerebrum that is a functional grouping rather than an anatomical one. (6) What limbic system structure is involved in the flight or fight reaction. Explain. The amygdala, controls the sense of fear and the immediate reaction to a serious dangerous situation. (7) What limbic system structure is involved in learning and memory. Explain. The hippocampus is an information gateway during the learning process, determining what information about the world is to be sent to memory. (8) Describe the various types of memory. Short-term Memory: located just behind the front of the forehead that is small and constant. Long-term Memory: the back of the brain that stores all other memories Semantic Memory: part of the long term memory that stores numbers, words, and definite things. Episodic Memory: part of the long term memory that stores people, events, etc. Skill Memory: memory of motor skills such as sports techniques

(9) What appear to be the roles of the left hemisphere of the cerebrum and the right hemisphere? Left Hemisphere: verbal, logical, analytical, rational Right Hemisphere: non-verbal, visuospatial, intuitive, creative (10) What is Wernicke's area and Broca's area? Wernicke's area: information concerning the word is interpreted Broca's area: information from wernicke's area goes to broca's area and then to the primary motor cortex