7 The Nervous System PART B Power Point

7 The Nervous System PART B Power. Point® Lecture Slide Presentation by Jerry L. Cook, Sam Houston University ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY EIGHTH EDITION ELAINE N. MARIEB Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

The Reflex Arc § ____ – rapid, predictable, and involuntary responses to stimuli § Reflex arc – direct route from a _______ neuron, to an ______, to an ____ Figure 7. 11 a Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Cerebral Hemispheres (Cerebrum) § Paired (left and right) superior parts of the brain § Include more than _______________ § The surface is made of ridges (_____) and grooves (______) Figure 7. 13 a Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Lobes of the Cerebrum § _____ (deep grooves) divide the cerebrum into lobes § Surface lobes of the cerebrum § ___________ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Lobes of the Cerebrum Figure 7. 15 a Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Specialized Areas of the Cerebrum § Somatic _______ area – receives impulses from the body’s sensory receptors § Primary ______area – sends impulses to _____ § _____– involved in our ability to speak Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Sensory and Motor Areas of the Cerebral Cortex Figure 7. 14 Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Specialized Areas of the Cerebrum Figure 7. 13 c Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Layers of the Cerebrum § ____ matter § Outer layer § Composed mostly of ________ Figure 7. 13 a Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Layers of the Cerebrum § _______ § ______ inside the gray matter § Example: ____________ connects hemispheres Figure 7. 13 a Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Diencephalon § Sits on top of the brain stem § Enclosed by the cerebral heispheres § Made of three parts § ___________ § ______ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Diencephalon Figure 7. 15 Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Thalamus § Surrounds the _______ ventricle § The relay station for __________ § Transfers impulses to the correct part of the cortex for localization and interpretation Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Hypothalamus § Under the thalamus § Important autonomic nervous system center § Helps ________ § Controls ____________ § Regulates _______ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Hypothalamus § An important part of the limbic system (emotions) § The _______is attached to the hypothalamus Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Epithalamus § Forms the roof of the third ventricle § Houses the ____(an endocrine gland) § Includes the ________– forms _______ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Brain Stem § Attaches to the spinal cord § Parts of the brain stem § ___________ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Brain Stem Figure 7. 15 a Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Midbrain § Mostly composed of tracts of nerve fibers § Has two bulging fiber tracts – ____________ § Has four rounded protrusions – ________________ § Reflex centers for _______ and _____ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Pons § The bulging center part of the brain stem § Mostly composed of _______ § Includes _______ involved in the control of ______ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings

Medulla Oblongata § The lowest part of the brain stem § Merges into the spinal cord § Includes important fiber tracts § Contains important control centers § ______________________ § _____ Copyright © 2006 Pearson Education, Inc. , publishing as Benjamin Cummings