BIO 201 – HUMAN ANATOMY AND PHYSIOLOGY I CHAPTER 13: THE BRAIN AND CRANIAL NERVES- CLASS LECTURE NOTES VISUAL A & P‚MARTINI SECTION 1: FUNCTIONAL ANATOMY OF BRAIN AND CRANIAL NERVES INTRODUCTION: Brain characteristics A. Equals ~97% of body’s neural tissue in adults B. “Typical” brain 1. Weighs 1.4 kg (3 lb) 2. Volume of 1200 mL (71 in.3) C. Size varies among individuals 1. Male brains are ~10% larger than female (related to body size) 2. No correlation between
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NERVOUS SYSTEM STUDY GUIDE 1. 3 FUNCTIONS OF NERVOUS SYSTEM 2. 2 MAJOR NERVOUS SYSTEMS 3. AFFERENT VS. EFFERENT NERVES. What does each do? 4. SOMATIC VS AUTONOMIC NERVOUS SYSTEM What does each do? Which is involuntary? 5. SYMPATHETIC VS PARASYMPATHETIC What are some things that happen when you get scared? When you have just had a big meal? 6. Draw the Graphic Organizer for the nervous system 7. ANATOMY
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STUDY GUIDE LECTURE EXAM 3 CHAPTER 11 Functions and Divisions of the Nervous System 1. List the basic functions of the nervous system. 2. Explain the structural and functional divisions of the nervous system. Histology of Nervous Tissue 3. List the types of neuroglia and cite their functions. 4. Define neuron‚ describe its important structural components‚
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There are two groups of reflexes in the human body‚ with two ways to categorize each of them. Reflexes can either be inborn and connected through the nervous system‚ or they can be learned through practice. Another way to explain a reflexive category would be autonomic reflexes or somatic reflexes. Autonomic reflexes are those which are unaware to us and act on visceral organs of the body‚ whereas somatic reflexes involve skeletal muscle stimulation. Both types of reflexes are put into effect via
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pleasurable emotions. -Morphine- agonist Difference with Somatic and Autonomic nervous system (Peripheral ) Somatic Nervous System Made up of nerves that connect to voluntary skeletal muscles and to sensory receptors. -Consists of neurons that communicate between the body and the brain Peripheral Nervous System Made up of all those nerves that lie outside the brain and spinal cord. Difference between afferent and efferent neurons (Somatic Nervous System) Efferent Neurons -Motor neurons -Neurons
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worksheet ( see below). Submit your answers as a word document to the Week 4 dropbox 1. Define a reflex and list the components of a reflex arc. Receptor‚ Sensory neuron‚ Integration‚ Motor neuron‚ and Effector. Somatic reflexes activate skeletal muscle and autonomic reflexes activate smooth or cardiac muscle 2. Describe the events of an action potential. During the action potential part of the neural membrane opens to let + charged ions in the cell and let – charged ions out. This causes
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Telencephalon/Cerebrum or Cortex - largest part of human brain‚ highly wrinkled (thought & action) Thalamus - major sensory relay center‚ regulates CNS & PNS Hypothalamus - ventral to thalamus (homeostasis‚ emotion‚ thirst‚ hunger‚ circadian rhythm‚ control of autonomic nervous system) [controls pituitary gland] Main structures a. Limbic system - collection of structures w/in forebrain (emotional brain in memories‚ emotions‚ decisions‚ motivation‚ learning) b. Amygdala - control of emotional behavior c
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Sannu’s Story A. In Sannu’s case why is there both sensory loss and muscle weakness? Leprosy is a disease that has been known since biblical times. It causes skin sores‚ nerve damage‚ and muscle weakness that gets worse over time. Leprosy is caused by the bacterium Mycobacterium leprae. It is not very contagious and it has a long incubation period (time before symptoms appear)‚ which makes it hard to know where or when someone caught the disease. Children are more likely than adults to get the
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BIOLOGY 2113 Unit IV Review Guide Chapters 13-17 Chapter 13 – True or False 1. The nervous system consists of the brain‚ spinal cord‚ and nerves. 2. The afferent nervous system consists of all outgoing motor pathways. 4. Ependymal cells engulf and destroy microbes and cellular debris in inflamed or degenerating brain tissue. 5. Oligodendrocytes form myelin sheaths around nerve fibers in the CNS. 6. Nerve fibers with many Schwann cells forming a thick myelin sheath are called myelinated fibers
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BIOLOGICAL FOUNDATIONS Heredity Heredity refers to the process of transmitting genetic characteristics from parents to offspring. Physical traits and even physical defects are known to be hereditary. Also‚ some mental traits and mental defects are known to be hereditary. (http://www.slideshare.net/GenPsyche/biological-bases) Nature and Nurture Both nature and nurture affects all aspects of human behaviour. “Nature refers to all the evolutionary factors that have shaped the genetics that we have
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