Sense Organs
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
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