Human Anatomy Special Senses – Lab Activities Name: ______________________________ Mr. DePhillips 40 points You MUST follow the directions on the colored card at each station. The information below only represents what questions you need to answer and what test results you need to report! “Vision” Activity ONE – Muscles of the Eye What accessory eye structures can you identify? Look Left… Right Eye ___________________(muscle) Look superiorly Left Eye _________________(muscle) Right Eye ______________(muscle) Left Eye __________________(muscle) (Eye model) Label the numbered eye parts… 1 6 2 7 3 8 4 9 5 10 Activity TWO – Visual Acuity – Snellen Eye Chart 20 feet is marked by the strip of tape on the floor. Visual Acuity, Right Eye _________/___________ Visual Acuity, Left Eye _________/___________ Only if you can take off your glasses/contacts, do it again… _________/___________ _________/___________ Activity THREE – Color Blindness – Ishihara Color Plates We don’t use a color plate book since they cost HUNDREDS of dollars. Instead, use the ones projected on the screen in class. And take a look at the poster hanging in the room. Do YOU have a form of color blindness? ________ If so, what type? Activity FOUR – Testing for Astigmatism Complete the test and report YOUR results: Left Eye? Right Eye? Briefly describe this test: Activity FIVE – Determining Near Point Accommodation Use the info at this station to define: Astigmatism Presbyopia Neat point for right eye: _____________________ Near point for left eye: ____________________ Briefly describe this test: Activity SIX – Testing your Photoreceptors Choose a paper with a colored dot on it. DO NOT write your name on the paper. Sticker color __________ After image Prediction ___________ Actual after image _________ Sticker color __________ After image Prediction ___________ Actual after image _________ Sticker color __________ After image Prediction ___________ Actual after image _________ **Attach your “blind spot map” to this lab.** “Hearing” Activity SEVEN – Weber Test and Rinne Test Weber Test – Conductive & Sensorineural Deafness Is the tone equally loud in both ears…or is it louder in one ear? Rinne Test – Bone and Air-Conduction Hearing Right Ear __________________ Left Ear _________________ Do YOU hear better by bone or by air conduction? (Ear model) Label the ear’s parts 1 6 2 7 3 8 4 9 5 10 “Taste” Activity EIGHT – Stimulating Taste Buds How long does it take? ____________ Why couldn’t you taste it immediately? Activity NINE – Effects of Smell and Texture on Taste Place only one check per food…at what point did they identify the food? Food Texture Only Chewing – nostrils pinched Chewing – nostrils open Identification not made Was the sense of smell equally important in all cases? Where did it seem important, and why? “Equilibrium” Activity TEN – Conduction Lab Tests on Equilibrium Balance Test Did YOU walk without wobble? Dizziness? Nystagmus? Continues on next page… Romberg Test Eyes open - Swaying movements? Eyes open - Side-to-side? Eyes closed – front to back swaying? Was the equilibrium apparatus working equally well? Swaying greater when eyes were closed or open? Conclusions? Role of Vision in Maintaining Equilibrium Left foot off floor observation Right foot off floor observation “General Information” Activity ELEVEN - (need “Atlas of Human Anatomy”) (p96-97) What is another name for an ocular bulb? What is another name for the crystalline? Describe what happens during “presbyopia” (right shaded box). (p. 98-101) What’s the scientific name for the ear lobe? Prolonged exposure to what sounds (specifically) can cause hearing problems? (p. 102-103) What the name of that little thing that hangs down in the back of your throat? How many taste buds does the average human have _____ papillae X ______ taste buds per papillae = Activity TWELVE - (“At the Clinic” questions- need textbook…notes…) Why do you often have to blow your nose after crying? On “Take Your Daughter to Work Day,” 5 year old Katie wandered away from her father’s 25th floor office into the hall. Fascinated by the buttons in the elevator, she entered, pushed 1, and the high-speed elevator plummeted to the first floor. Later she told her (now recovered) father that she felt like she “kept on going” when the elevator stopped. Explain her sensation. Nine children attending the same day care center developed red, inflamed eyes and eyelids. What is the most likely cause and name of this condition? Mrs. Minniver is taking a medication that causes dry mouth, and she complains to her doctor that she’s lost her sense of taste. How might this side-effect be explained?