Sense Organs

• Eyes

  • pair of sensory organs responsible for visual perception
• Cornea

  • transparent portion at the front of eye, exterior to pupil or eye's opening
• Conjunctiva

  • translucent membrane that surrounds the cornea
• Conjunctiva

  • continuous with the inner surface of eyelids
• Sclera

  • tough whitish membrane underneath the conjunctiva that wraps around the eyeball
• Sclera

  • maintains the shape of eye
• At the posterior-end is the optic nerve. The muscles around it that is attached to sclera is the retractor bulbi
• Retractor bulbi

  • pulls the eye in place within the orbit
• Lens

  • within the cornea
  • opaque and spherical
• toad eye

  A) eyelids

  B) conjunctiva

  C) cornea

  D) Sclera

  E) lens

  F) optic nerve

  G) retractor bulbi

  
• Ears

  • paired organs responsible for auditory perception
• toad ear

  A) tympanum

  B) columella

  
• Columella

  • thin, elongated bone that extends to the interior of ear
• The space interior to the tympanic membrane is continuous with the buccal cavity via the eustachian tube