BIOD 152 Module 2 Exam (100% errorless answers)

Human Brain Divisions correct answers cerebrum, brainstem, diencephalon, cerebellum What protects the brain? correct answers skull, meninges, and BBB Ventricles of the brain correct answers cavities within the brain filled with cerebrospinal fluid; 2 lateral, 3rd ventricle, 4th ventricle Meninges correct answers 3 layers of connective tissue that cover and protect the CNS organs and enclose CSF. Dura Mater correct answers thick, outermost layer of the meninges surrounding and protecting the brain and spinal cord pia mater correct answers the delicate innermost membrane enveloping the brain and spinal cord. CSF correct answers special fluid formed in walls of ventricles from blood plasma by permeating through the choroid plexus; cushions the brain and spinal cord by providing buoyancy, allowing the brain to float. BBB correct answers diffusion barrier that prevents most particles from entering CNS tissue; brain and spinal cord separate from general blood circulation. Formed by impermeable brain capillaries, due to astrocytes due to need for stable chemical environment. Cerebrum correct answers largest part of the brain, 83%; includes median longitudinal fissure, left and right cerebral hemispheres, gyri, sulci, and fissures corpus callosum correct answers A bridge of white nerve fibers that connect cerebral hemispheres Cerebral cortex correct answers outer region of the cerebrum, containing sheets of nerve cells; gray matter of the brain Deep sulci correct answers frontal, parietal, temporal, occipital Frontal sulci correct answers controls higher level executive fx like reasoning and decision making; controls motor fx and control over voluntary muscle actions parietal lobe correct answers A region of the cerebral cortex whose functions include processing information about touch; receive sensory info from receptors in mouth for taste and in skn four touch, pain, and pressure. Occipital correct answers interprets visual input Temporal correct answers sensory areas for hearing and smelling