Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Nervous System Consists of the brain, nerves, and spinal cord Coordinates all of the many activities of the body Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Neuron A single nerve cell Consists of a cell body, dendrites and an axon Dendrites: Nerve fibers that carry impulses toward the neuron Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Axon: Single nerve fiber that carries impulses away from the neuron Myelin Sheath: Covering of the axon that increases the rate an impulse travels Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
2 Main Divisions of the Nervous System Central Nervous System Consists of the brain and spinal cord Peripheral Nervous System Consists of the nerves Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Let’s talk about – The Brain Cerebrum: Largest part of the brain Contains 4 lobes Frontal Parietal Temporal Occipital Responsible for reasoning, memory, thought, speech, sensation, sight, smell, hearing, and voluntary body movements Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Central Nervous System – The Brain (cont) Cerebellum: Located below the back of the occipital lobe Responsible for muscle coordination, balance, posture, and muscle tone Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Central Nervous System – The Brain (cont) Diencephalon: Located between the cerebrum and midbrain Contains 2 structures: Thalmus: Responsible for relaying impulses (messages) to the cerebrum Hypothalamus: Responsible for regulating temperature, & other functions Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Central Nervous System – The Brain (cont) Midbrain: Top part of the brain stem Pons: Middle part of the brain stem Responsible for certain reflex actions such as chewing, tasting, saliva production and other functions Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Medulla oblongata: Bottom part of brain stem Responsible for regulating heartbeat, respirations, swallowing, coughing, & blood pressure Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Let’s talk about – The Spinal Cord Continues down from medulla oblongata Surrounded and protected by the vertebrae Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Let’s talk about – The Spinal Cord Responsible for many reflex actions Carries sensory (things you sense) messages to the brain Carries motor (tells your body to move/respond) message from the brain Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Meninges Membranes that cover and protect the brain & spinal cord Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Meninges (cont) Three layers: Dura mater: Thick, tough outer layer Arachnoid membrane: Middle layer; resembling a spider web Pia mater: Innermost layer; attached to the brain & spinal cord Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Ventricles Hollow spaces within the brain that are filled with CSF (ceberospinal fluid) CSF: Serves as a shock absorber to protect the brain & spinal cord Carries nutrients to some part of the brain Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Peripheral Nervous System Consists of: Cranial nerves Spinal nerves Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Peripheral Nervous System Autonomic nervous system: A division of the peripheral nervous system Divided into 2 parts that work together to maintain homeostasis (a balanced state in the body) Sympathetic Parasympathetic Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Peripheral Nervous System (cont) Sympathetic Nervous System Works during times of emergency when the brain senses danger Causes increase in heart rate, blood pressure, respirations Prepares the body for “fight or flight” Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Peripheral Nervous System (cont) Parasympathetic Nervous System After the emergency, works to calm the body down Decreases heart rate, blood pressure, & respirations Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED. Project This is an individual project! It will be due on Friday 3/1/13 Select one of the Diseases or Abnormal Conditions on the next two slides Create a Power Point presentation – you may use your book, one of the A&P books in the class or reputable internet site Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Power Point should Include Name of the disease/disorder Common Signs or symptoms Cause Treatment Any Pictures or Images you may find References Email completed Power Point to danielle.kriminger@ccstn.org Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Diseases and Abnormal Conditions Cerebral palsy Cerebrovascular accident (CVA) Encephalitis Epilepsy or seizure syndrome Hydrocephalus Meningitis Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.
Diseases and Abnormal Conditions (continued) Multiple sclerosis (MS) Neuralgia Paralysis Parkinson’s disease Shingles or herpes zoster Copyright © 2004 by Thomson Delmar Learning. ALL RIGHTS RESERVED.