Sense Organs

Satisfactory Essays
Sense Organs
The General Senses Sensory receptors n monitor external or internal conditions. Simplest are free nerve endings.
-Temperature
- pain -touch -pressure -vibration
Receptors throughout the body
•Special senses nSmell ntaste nvision nbalance nhearing nReceptors located in sense organs (e.g., ear, eye).

EYES nAccessory Structures of the Eye qEyelids (palpebra) and glands qSuperficial epithelium of eye nConjunctiva qLacrimal apparatus nTear production and removal qExtrinsic eye muscles

nExtrinsic Eye Muscles qMove the eye qSix muscles cooperate to control gaze nSuperior and inferior rectus nLateral and medial rectus nSuperior and inferior oblique nLayers of the Eye

Fibrous tunic nSclera qDense fibrous connective tissue q“White of the eye” nCornea qTransparent qLight entrance

nLayers of the Eye qVascular tunic nIris nCiliary body qAttachment of suspensory ligaments nChoroid qHighly vascular

nFunctions of the Vascular Tunic qProvide a route for blood vessels qControl amount of light entering eye nAdjust diameter of pupil qSecrete and absorb aqueous humor qAdjust lens shape for focusing

qNeural tunic (Retina) nOuter pigmented part qAbsorbs stray light nInner neural part qDetects light qProcesses image qCommunicates with brain

nEARS
Equilibrium and Hearing nSensory Functions of the Inner Ear qDynamic equilibrium qStatic equilibrium qHearing nAnatomy of the Ear qExternal ear nPinna (auricle) nExternal acoustic canal nTympanic membrane (eardrum) qMiddle ear nAuditory ossicles qConnect tympanic membrane to inner ear nAuditory tube qConnection to nasopharynx

nTONGUE

nTaste (Gustatory) Receptors qTaste buds nFound within papillae on tongue, pharynx, larynx nContain gustatory cells, supportive cells nTaste hairs (cilia) extend into taste pores nSense salt, sweet, sour, bitter qAlso sense umami, water nSynapse in medulla oblongata

nNOSE nThe Olfactory

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Organ senses

    • 546 Words
    • 3 Pages

    Organ Senses Definition of each Sense Organ 1.) Eyes -The human eye is an organ that reacts to light and has several purposes. As a conscious sense organ, the mammalian eye allows vision. Fun Fact: *In the dark, a substance produced by the rod cells increases the sensitivity of the eye so that it is possible to detect very dim light. 2.) Nose - The nose is the organ responsible for the sense of smell. The cavity of the nose is lined with mucous membranes that have smell receptors connected…

    • 546 Words
    • 3 Pages
    Satisfactory Essays
  • Better Essays

    Sense Organs

    • 4164 Words
    • 17 Pages

    different experiences, can't they be felt at the same time? Can’t we hear, touch, smell and taste while seeing? Have you ever thought how this happens? You know that we get information about the changes in the environment through the sense organs. What are the sense organs we have? What is the function of each? Prepare a note on it. ..................................................................... Let us examine the parts of the eye. Make a list of those you know. — — — Pupil Retina Don't…

    • 4164 Words
    • 17 Pages
    Better Essays
  • Good Essays

    Sense Organs

    • 2656 Words
    • 11 Pages

    SENSE ORGANS RECEPTORS (Sense organs) * Transducers of specific forms of kinetic energy * Change mechanical, electrical, thermal, chemical, or radiant energy into nerve impulses in sensory neurons Two major categories: * GENERAL RECEPTORS * Often exist as individual cells or receptor units * Widely distributed throughout the body * Most numerous such as: * touch, temperature, and pain: and * to initiate various reflexes necessary for maintaining…

    • 2656 Words
    • 11 Pages
    Good Essays
  • Good Essays

    The Five Sense Organs in Human Beings The sense organs — eyes, ears, tongue, skin, and nose — help to protect the body. The human sense organs contain receptors that relay information through sensory neurons to the appropriate places within the nervous system. Each sense organ contains different receptors. • General receptors are found throughout the body because they are present in skin, visceral organs (visceral meaning in the abdominal cavity), muscles, and joints. • Special receptors include…

    • 1140 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Introduction Sense Organs are the organs in our body which enables information from the outside world to be received through specific receptors that are connected to the brain by the nerves. They are eyes, ears tongue, skin and nose. Sense organs absorb energy from a physical stimulus from the environment and the sensory receptors present in the sense organs convert this energy into neural impulses and gets carried to the brain for processing. We should take care of them by keeping them clean,…

    • 320 Words
    • 1 Page
    Satisfactory Essays
  • Powerful Essays

    GUIDE FOR PILOTING THE WORKBOOKS TABLE OF CONTENTS Page Introduction Why Do a Pilot Study Aim of the Pilot Study Steps for Piloting Methods and Statistics Required Essential Qualities of the Instructor for the Learning Programme Using Experiential Learning Techniques Questionning for Experiential Learning Evaluation Post Pilot Guidelines Appendix A: Statistical Steps Appendix B: Guidelines for Teachers (as seen in Workbooks) References Tables 1: Standards that Should be Met by Each Teacher 2…

    • 5857 Words
    • 24 Pages
    Powerful Essays
  • Good Essays

    Introduction Sense Organs are the organs in our body which enables information from the outside world to be received through specific receptors that are connected to the brain by the nerves. They are eyes, ears tongue, skin and nose. Sense organs absorb energy from a physical stimulus from the environment and the sensory receptors present in the sense organs convert this energy into neural impulses and gets carried to the brain for processing. We should take care of them by keeping them clean, by…

    • 735 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Organ

    • 3129 Words
    • 13 Pages

    believed. However, instead of letting our healthy organs be eaten by insects and decomposing it we can try to save a person in need. Based on donate life America, an organizational team who support and encourage people to sign up to be an organ donor and according to their information and research there are more than 117,294 people of all ages and gender currently on the wait list for an organ transplant in United states concurrently. “The process of organ donation can save as many as eight lives through…

    • 3129 Words
    • 13 Pages
    Powerful Essays
  • Satisfactory Essays

    organs

    • 300 Words
    • 2 Pages

    1.Organ donation takes healthy organs and tissues from one person for transplantation into another. Organs you can donate include: kidneys, heart, liver, pancreas, intestines, lungs, skin, bone, bone marrow, and cornea (the front part of the eye). [source: medlineplus.com] 2.Organ donations usually occur for patients with kidney failure, heart disease, lung disease, and cirrhosis of the liver. For patients who need a kidney or a liver, a living donor’s organs can be utilized, since we are already…

    • 300 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    organs

    • 642 Words
    • 3 Pages

    What is an Organ Broker? A poor man is desperate to make money to feed his family in an undeveloped country. A rich man is sick and needs a kidney transplant in order to survive. He is willing to pay whatever it takes to save his life. A greedy man acts as a middleman, or broker, between the two men and goes home with a profit of thousands of dollars. Organ brokers are most common for organizing kidney transplants and other non-essential organs. However, occasionally organ brokers will bribe…

    • 642 Words
    • 3 Pages
    Good Essays