The cerebral hemisphere is marked by outward ridges of tissue called _____.  Group of answer choices a. gyri b. sulci c. sutures d. fissures e. depressions   This area of the brain has so many roles! It is essential to homeostasis, regulating visceral activities related to blood pressure, heart rate, digestion, & respiration. This area also regulates food intake & body temperature, is tied in to the limbic system, and plays a vital role in endocrine function.  Group of answer choices a. cerebellum b. hypothalamus c. cerebral cortex d. midbrain e. thalamus   Which of the following is true of the arachnoid mater?  Group of answer choices a. forms inner periosteum of skull; partitions between lobes b. highly vascular inner (deep) membrane around brain c. spider-web like; helps form a cushion between dura and pia maters d. follows contours of brain, lining sulci

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