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Neural and Chemical Coordination
 

Neural and Chemical Coordination

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slideshow presentation discussing the nervous and endocrine systems for biology reporting

slideshow presentation discussing the nervous and endocrine systems for biology reporting

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    Neural and Chemical Coordination Neural and Chemical Coordination Presentation Transcript

    • THE NERVOUS SYSTEM ANDTHE ENDOCRINE SYSTEM
    • COORDINATION PROCESSES Coordination is the process through which two or more organs interact and complement the functions of one another. Coordination occurs because of two systems: the nervous and the endocrine systems.
    • NERVOUS SYSTEM consists of the brain, spinal cord, and nerves (1) receive and transmit stimulus; (2) interpret and analyze a stimulus; (3) and evoke a proper response by an effector. The Nervous System
    • THE ORGANIZATIONAL CHART OF THE NERVOUS SYSTEM Central Brain Nervous System Spinal (CNS) CordNervous SympatheticSystem Parasympathetic Peripheral Autonomic Nervous System Somatic Sensory (PNS) Motor
    • THE NEURON  Bundles of cells and the basic unit of the nervous system  send electrical signals that direct all of your body’s activitiesNeuron
    • STRUCTURAL PARTS OF A NEURON  Dendrites – receives the information  Cell Body – where signals travel  Axon – carries the signals  Synapse - place where TRIVIA: the longest axon in the worldand dendrites come axons measures around together feet! 15 Neuron
    • The synapse carries a signal from cell to cell TRIVIA: How many 1 synapses are in one neuron? 1,000 to 10,000!! 3 4 2
    • TYPES OF NEURONS SENSORY OR AFFERENT NEURONS- Carry impulses towards the integrating centers• MOTOR OR EFFERENT NEURONS- Carry impulses away from integrating centers to the body’s effectors, the muscles or glands• CONNECTOR OR ASSOCIATION NEURONS- Main component; integrates information and relays the impulse from the sensory neurons to the motor neurons
    • The Central Nervous System• made up of the brain, thespinal cord, and nerves thatconnect the two to the rest ofthe body.•The brain sends messagesthrough the rest of the nervoussystem to tell your body© Microsoft Corporation. All Rights Reserved. Central Nervous System
    • THE BRAIN  made of about 100 billion nerve cells  Divided into three parts: a. Forebrain b. Midbrain c. HindbrainBrain and its parts
    • THE SPINAL CORD Neural cable that extends from the base of the brain to the hips Axons from the brain carries down signals to the spinal cord TRIVIA: There are 1 billion neurons in the spinal cord
    • THE PERIPHERAL NERVOUS SYSTEM Somatic System - These nerves act as transmission lines between the internal and external environment, and CNS Autonomic System – regulates internal organs o Sympathetic o Parasympathetic
    • Autonomic Nervous System
    • The Endocrine System  Ductless glands use to produce, store, and secrete chemical substances known as hormones which carry messages and secretes substances.
    • Endocrine Organs Purely endocrine organs  Pituitary gland  Pineal gland  Thyroid gland  Parathyroid glands  Adrenal: 2 glands  Cortex  Medulla 15
    • Endocrine Organs• Endocrine cells in other organsoPancreasoThymusoGonadsoHypothalamus 16
    • ENDOCRINE GLANDS AND THEIR SECRETIONS Pituitary Gland is located directly under the hypothalamus portion of the brain Two distinct parts:1. Anterior2. Posterior
    • Secretion in the Pituitary Gland  TSH: thyroid-stimulatingTwo divisions: hormone  ACTH: adrenocorticotropic hormone Anterior pituitary  FSH: follicle-stimulating (adenohypophysis) hormone  LH: luteinizing hormone  GH: growth hormone  PRL: prolactin  MSH: melanocyte-stimulating hormone Posterior pituitary  ADH: antidiuretic hormone (neurohypophysis)  Oxytocin
    • ENDOCRINE GLANDSAND THEIR SECRETIONS  Parathyroid Glands - The secretion of these glands is the parathormone (PTH) which regulates the use of substances such as calcium.
    • ENDOCRINE GLANDS AND THEIR SECRETIONS• Adrenal Glands- on top of the kidneys- The adrenal medulla secretes a hormone permits the body to react quickly and strongly during emergencies
    • ENDOCRINE GLANDS AND THEIR SECRETIONS Pancreas- located near the stomach and the duodenum- Functions: (1) to produce and release digestive enzymes into the small intestines and (2) to secrete several hormones into the bloodstream- is found in a cluster of cells called the islets of Langerhans TRIVIA: Alpha cells secrete glucagon, beta cells secrete insulin, and delta cells secrete somatostatin.
    • ENDOCRINE GLANDS AND THEIR SECRETIONS Gonads- Located in the seminiferous tabules in the testes are the interstitial cells which secrete the male sex hormones called testosterone or androgen which affects the production of sperm cells.
    • ENDOCRINE GLANDSAND THEIR SECRETIONS  Pineal Gland - pea-sized gland located in the midbrain. - melatonin, a hormone that affects the modulation of wake/sleep patterns.
    • ENDOCRINE GLANDS AND THEIR SECRETIONS Thymus Gland- found under the breastbone and active during childhood.- site of development of immune system to form anti-bodies.
    • ENDOCRINE GLANDSAND THEIR SECRETIONS  Digestive Hormones - Gastrin, secreted from the stomach - The secretion stimulates the release of pancreatic juice to neutralize the stomach acid.
    • DISORDERS OF ENDOCRINE GLANDS Disorders of the Pituitary Gland  Giantism - over secretion of growth hormone  Dwarf or Midget – insufficient of growth hormone
    • DISORDERS OF ENDOCRINE GLANDS• Disorder of the Thyroid Gland  Hyperthyroidism (Graves’ Disease) – over secretion of TSH or a thyroid tumor  Hypothyroidism (Goiter) – insufficient iodine
    • DISORDERS OF ENDOCRINE GLANDS Disorders of the Adrenals  Addison’s Disease – underactivity of the cortex  Cushing’s Disease – overactivity of the cortex  Adrenogenital Syndrome – accelerrated sexual development
    • DISORDERS OF ENDOCRINE GLANDS• Disorders of the Pancreas  Diabetes meilitus – not enough insulin  Hypoglycemia or low blood sugar – excessive insulin
    • REFERENCESCampbell, Karen L., Campbell, John R., Kenealy, Douglas M. 2003. Animal Sciences: 4th Edition. New York: The McGraw-Hill Comp. Inc. pp.192-193, 196-202.Campbell, Neil A., Mitchell, Lawrence G., Reece, Jane B. 1999. Biology: 5th Edition. California: The McGraw-Hill Comp. Inc. pp. 898-910, 960-964.Carino, Virginia S., Realuyo, Zenaida M. 2003. Basic Concepts of Biological Science. Quezon City: Katha Publishing Corp. pp.148-167.