Welcome to Ch 7...The Sensory Systems







Review of Major Class/School Rules...
1. You must be in your assigned seat by the bell or you will be marked tardy...entering the room at the bell or after is considered tardy-DO NOT stay and talk with teachers placing you tardy for my class..a PORTABLE PASS ALLOWS ONLY 2 EXTRA MINUTES!
2. There will be no talking without permission or sidebar conversations with students...
3. No cell phones are allowed in my class at any times, unless specified for a lab...Referrals will be written if phones go off or they are seen on a test.
4. Safety is paramount...Dissections and activities predispose students to accidents and never horseplay or not adhering to directions. BE PREPARED!
5. Grades will not be discussed in e-mails and ALL grades are earned...
6. You must raise your hand to ask a question-never to shout in the room TO ANSWER as this disturbs other students requiring quiet environments.
7. Dress codes will be adhered to per school policy with ID's WORN ALWAYS...
8. Cheating will result in automatic zero on assessment and referral-this includes wandering eyes, talking, and/or using cell phones or notes...
9. No eating or drinking without professional courtesy: only capped bottles, closed containers, etc...If I reward you with a snack, respect the privilege...
10. Disrespect, bullying, or defiance in my classroom will not be tolerated...All students must earn respect and treat others as young adults in this learning environment.
***Tardies: are disrespectful to the class and students needing to focus in this class. ALL students who are tardy must adhere to class policy stated verbally often...Labs, assessments or classwork must be made up the day tardy during C or D lunch with an appt, or after school on the day tardy...Disrupting others working is disrespectful and tardy referrals will be written per school policy...
***If tardy after bell, you were marked absent- approach the teacher's desk quietly and remind the teacher to mark you tardy before you leave class from absent-STUDENTS ARE HELD ACCOUNTABLE FOR THEIR BEHAVIORS!
***Assessments are often given immediately after bell and you will NOT be given the assessment after missing any part of the allotted class time!
11. ***Forgetting your name,date and/or period on any coursework/assessments will be an automatic zero-you should know the rituals and routines-name-date-pd on every paper upper right corner...since first day of school...
***This 2nd Semester will be extremely rigorous and more demanding with the remaining body systems, possible CPR and Dissections...Pace will be fast and ultimate study and review daily is encouraged to be successful...You MUST come to class prepared and on time! IT IS EASY TO FALL BEHIND!
If an 'extra' assignment is offered, like a podcast. take advantage of them...
***We are getting even more rigorous with high level content, formative and summative assessments...I recommend you increase your studying or change your study habits to be successful in this class.This web page is mandatory, with your notes and textbook for your success-Tutoring by appt every morning, pd 5 lunch C and D with permission, and some afternoons. You may never just 'pop in to my class...Students are held accountable.No more Honors test remediation!
Cell phones are Never allowed in my room and will be issued a referral if they are visible-as well as writing on class desks and talking without permission! NO SIDE-BAR CONVERSATIONS TO OTHER STUDENTS... Rules are meant to be followed...
Seniors....Start preparing for Finals exemption...CRITERIA: a minimum  B every quarter , A in Honors class...

Monday-1/13...CW: Wrap up Ch 7...Taste, Touch and smell reviewed...
short video...https://youtu.be/0hwOL91cjwM
Taste buds contain the taste receptor cells, which are also known as gustatory cells. The taste receptors are located around the small structures known as papillae found on the upper surface of the tongue, soft palate, upper esophagus, the cheek, and epiglottis. ... On average, the human tongue has 2,000–8,000 taste buds.

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Key anatomy words: 
1. Gustation = taste = tongue
2. Tactile = touch = skin
3. Olfaction = smell = nose...
4. Meissner's Corpuscles(cells)-detect sensitivity in touch-upper dermis
5. Pacinian's corpuscles-detect pressure-lower dermis
HW: Read ahead to ch 8.1 and check webpage for Tuesday...
***PTC paper to taste bitter on the tongue...

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Tuesday-1/14...Go to Ch 8- Endocrine system
***Review Checklist for Friday Quiz:
1. Ear structures and functions
2. All structures and functions of eyes
3. Eye disorders: myopia/hyperopia/glaucoma/cataract/astigmatism/
4. Snellen eye chart
5. Ishihara Color Blindness
6. Rules we reviewed 1st day back
7. Know the '5' tastes on tongue
8. Know all vocab on page-ex. Gustation = taste-tongue
                                                       Olfaction = smell-nose
                                                       Optic/Opthalmic = sight-eye
                                                       Tactile = touch-skin
                                                       Auditory/Acoustic =                                                                        hearing-ear
9. High level: any highlighted or trivia fact that requires perfect spelling on this page or discussed in lab...
***The more you learn...the more you can earn...
***Behaviors, attendance, and participation rules...
***Anything on this page may be 1st bonus question tomorrow!

Thursday-1/8...CW: Cow Eye Dissection Lab...Watch the Pre-lab video and notice all the structures...There is  a very shiny structure irridescent blue posterior to retina called tapetum lucidum which reflects light(not refracts) and allows animals,not humans, to see in the dark...
***Dissection is a privilege where safety rules!  Arriving tardy results in no dissection...No horseplay, sidebar conversations, and leaving your dissection pair to mingle with another group...No hands-on...no grade...Labs may not be made up at ths time...
***Those who participate often(online, in class, etc...MAY...also get a sheep eye, smaller than cow and human missing the Aqueous humor...When on task, fully prepared and applying class knowledge, 10 minutes is not enough time and a waste of specimen...Being prepared and gowned, goggled and gloved MAY allow you time to get the second eye...You earn grades for your skills acquired and performed correctly...
HW: Ch 7-Senses Formative Quiz 2-25Q = 50 pts...
Read ahead and review sec 7.3...

Friday-1/10...CW: 1st assessment of 3rd Quarter...Ch 7 Senses Formative Quiz 2-25Q = 50 pts...
We are in Super rigorous mode using ALL your senses...The webpage is your mandatory reinforcement...Always know past, present and future-
***The more you participate...the more you earn...
HW: Always review and stay in tune with webpage...
***Tuesday-1/7...Midterm make-ups only before school...
CW: Semester 2 Rules reviewed...
We continue with The Eyes...sec. 7.1...
***Video from today-  https://youtu.be/cTZl2qnzifc

***For Practice at home....Take the Eye Anatomy Quizzes...How did you do?

***Here is a fun video on parts of the eye...

***High level fact: The Macula(blind spot) has NO photoreceptors-no rods or cones...

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***Video from today-  https://youtu.be/cTZl2qnzifc

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***If a bright light hits your eyesyour pupils get smaller because you don't need that much light to see. Ah, but this one has a twist. Because bright light can damage the eyeyour pupils are also getting smaller to protect your retina.

***Shining a Light on Pupil Constriction. You've seen it on television: A doctor shines a bright light into an unconscious patient's eye to check for brain death. If the pupil constricts, the brain is OK, because in mammals, the brain controls the pupil.

***Whether eye dilation during an exam is necessary depends on the reason for your exam, your age, your overall health and your risk of eye diseases. The eye drops used for dilation cause your pupils to widen, allowing in more light and giving yourdoctor a better view of the back of your eye.

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Glaucoma is a group of eye conditions that damage the optic nerve, the health of which is vital for good vision. This damage is often caused by an abnormally high pressure in your eye. Glaucoma is one of the leading causes of blindness for people over the age of 60...Doctors put a puff of air in your eye rhat measures this pressure
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***cataract below,  is a clouding of the normally clear lens of your eye. For people who have cataracts, seeing through cloudy lenses is a bit like looking through a frosty or fogged-up window. Clouded vision caused by cataracts can make it more difficult to read, drive a car (especially at night) or see the expression on a friend's face.Surgery is recommended.
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***Bacterial Conjunctivitis(pink eye-contagious)

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Astigmatism is a common vision problem caused by an error in the shape of the cornea. With astigmatism, the lens of the eye or the cornea, which is the front surface of the eye, has an irregular curve. This can change the way light passes, or refracts, to your retina. This causes blurry, fuzzy, or distorted vision.
Astigmatism is a very common childhood vision problem. Research supported by the National Institutes of Health indicates that about 23% of very young children (from 6 months to 1 year old) have it, but many children grow out of it. By the time they reach school age (5 or 6 years old), only about 9% have astigmatism.

Wednesday-1/8...CW: Reading an Eye chart...near/farsightedness = Myopia/hyperopia, respectively....
***Eye chart video:  https://youtu.be/kMwy06mAV5U
***Eye disorders:  https://youtu.be/i-unhWI_qLU
Eye charts can be configured in various ways, but generally, if during an eye test you can read the big E at the top but none of the letters lower than that, your vision is considered 20/200. That means you can read at 20 feet a letter that people with "normal" vision can read at 200 feet. So at 20/200, your visual acuity is very poorExample of a Snellen eye chart and a tumbling E chart.

***This is  how a Snellen eye chart and a "tumbling E" chart might look at your eye doctor's office. The tumbling E chart tests the visual acuity of young children and others who can't read letters aloud. Sometimes they present symbols and pictures for children.

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***Colorblindness (medically called achromatopsia)is genetic and CARRIED on the X chromosome by the mom...passed down to the son...But the mom has 2 X chromosomes so there is a 50% chance .Carriers do not exhibit the trait-only carry it!The mom can pass it down to the daughter who again carries it and if she has a son, he has a 50% chance of being colorblind...and so on.
***Human cones on retina are red, green, and blue...
***Video and the Ishihara colorblind test...
 *** https://youtu.be/6OMyfw2XNOw
***What it's like to be colorblind...https://youtu.be/FKSOe5NK_qQ
***As you notice, the test is specifically to identify red-green colorblindness...Blue-yellow colorblindness is extremely rare...
***About 8% of males, and 0.6% of females, are red-green color blind in some way or another, whether it is one color, a color combination, or another mutation.
***Deuteranopia-can only see 2-3 hues in contrast to the normal 7(ROYGBIV)...Refers to just red-green and not the description for COLORBLINDNESS...

Ishihara Color Blindness Test 1

Ishihara Color Blindness Test 8

***Trivia Fact: Three types of cones exist for recognizing blue, red, and green light sources. Cats and dogs have very few red cones compared to humans, so they see the world mostly in shades of blue, gray, and yellow.
HW: Prepare for possible eye dissection for Thursday...
***Trivia...Notice anything peculiar about the clock??
Image result for clock with roman numeral IIII
***The tapetum lucidum (/təˈpiːtəm/; from Latin for "bright tapestry; coverlet", plural tapeta lucida) is a layer of tissue in the eye of many vertebrates. Lying immediately behind the retina, it is a retroreflector.
***Humans don't see in the dark so its' not present!

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***Below is a sheep eye dissection that the more prepared students may dissect...
***No matter how skilled you believe you are...we never compromise safety...Holding the eye in your han d MAY result in serious injury with a scissor or scalpel slipping into your hand...The 'dissectors' are incorrectly and unsafely dissecting...ACCIDENTS CAN BE AVOIDED!!
***Below is a WS on the LAB...DO NOT PRINT IT OUT....IT IS TOO LONG...AND LETTER I ON BLIND SPOT WILL BE OMITTED...I WILL PROVIDE WHAT YOU NEED...1 WS must be turned in per group of 2...Name-Date, Period ALWAYS!
I provide goggles, gowns and MY OWN latex free, powder free gloves that must not be wasted-Size matters so choose small-medium-or large...Tardy=Poor conduct-Horseplay-Unprepared=Zero grade...
coweye Dissection Lab WS.pdf coweye Dissection Lab WS.pdf
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Monday-1/6...Planning day...Grades posted and finalized by Tuesday at 10:00 A.M.
Memorize for Assessments!
***Olfaction: smell/nose...nerve II
***Optic/Opthalmic: eye/vision...nerve  II,III, IV, VI 
***Tactile: touch...replaced by sense Equilibrium
***Gustation: taste...nerve VII, IX, XII
***Lingual = tongue( ex. sublingual = under tongue)
***Papillae(plural)-bumps contain taste buds
***Auditory/Oto: Hearing/Ear...nerve VIII
***Touch: Meissner's corpuscles/Pacinian = Pressure
***Myringotomy-surgical incision into ear(tubes)
***Best eyesight, hearing and smell: Cats not dogs...
***Katman: red green colorblindness
***Tinnitus-ringing in ears
***Rhinitus(allergic)-inflammation of mucous membranes(produce histamines-take anti-histamines-Benadryl)

Baroreceptors(blood pressure)
Photoreceptors: light
Thermoreceptors: temperature
Mechanoreceptors-touch or sound
Chemoreceptors: chemicals-smell and taste
***Know if you add some nerve #'s, how to write in roman numerals using cranial nerves.
Wednesday-12/18...CW: Pd 5 and Pd 6...
Monday-12/16...CW: Midterms Pd 1 and Pd 2...
Tuesday-12/17...CW: Midterms Pd 3 and Pd 4...
Friday-12/13...CW: Post test...same test you took in August to see what you already know about the human body...It didn't count then but will now, 4 months later...Midterms start Monday...DO NOT COME TARDY!!
HW: Review Study guides and your notes....Midterm is 10% of Semester grade...
Wednesday-12/11..CW: .Midterm Study Guide-Q1...Get into study groups...
***Goal: Try to answer as many questions as you can without looking them up- Put question mark next to those questions you're not sure about...
In study groups...compare answers and discuss why they are correct or incorrect choices...
HW: bring in 2nd Q study guide tomorrow...always check webpage...
Thursday-12/12...CW: Midterm Study Guide Q2...Get into study groups...All members participate...Do not copy answers from a member but discuss correct/incorrect answers...
HW: 1st Q Post-test tomorrow...always check webpage...
Ch 7-The Senses video notes.docx Ch 7-The Senses video notes.docx
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Monday-12/9...CW: Make-up tests  today...
***Ch 7-The Senses Video notes...it is above!!
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The Outer Ear

  • Pinna (auricle)-cartilage covered by skin placed on opposite sides of the head
  • auditory canal (also called the ear canal)
  • outer boundary of tympanic membrane

The Middle Ear

  • eardrum(tympanic membrane)
  • ossicles (3 tiny bones that are attached)
    • malleus (or hammer) - long handle attached to the eardrum
    • incus (or anvil) - the bridge bone between the malleus and the stapes
    • stapes (or stirrup) - the smallest bone in the body
  • The Inner Ear

    • oval window - connects the middle ear with the inner ear
    • semicircular ducts - filled with fluid; attached to cochlea and nerves; send information on balance and head position to the brain
    • cochlea - spiral-shaped organ of hearing; transforms sound into signals that get sent to the brain
    • eustachian(auditory) tube - drains fluid from the middle ear into the throat behind the nose
Intro to Ch 7-Senses Video Notes...
...short video...it is above on Special senses...
HW: Watch the Otoscope video below...Always check webpage...Print out study guides when they are posted for a grade...
Image result for the ear
***External Auditory Meatus: opening from external to Middle ear...
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ear diagram to label

Young, crying child with a middle ear infection. Diagram of the location of the infected middle ear.

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Tuesday-12/10...CW: Otoscope Lab...Why check ears: looking for infection and Cerumen...
***Earwax, also known by the medical term cerumen, is a gray, orange, or yellowish waxy substance secreted in the ear canal of humans and other mammals. It protects the skin of the human ear canal, assists in cleaning and lubrication, and also provides some protection against bacteria, fungi, insects, and water.
***Cerumen: earwax...First, it protects and moisturizes the skin of ear canal, preventing dry, itchy ears. Second, it contains special chemicals that fight off infections that could hurt the skin inside the ear canal. Finally, it acts as a shield between the outside world and the eardrum.Too much and it will impair hearing...
***Never use Q-tips in ears as you may push wax further in ear...
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***Cerumen = Earwax...
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***Because most kids have had infections in both ears, surgery is often done in both; this is called a bilateral myringotomy, or BMT. A tiny tube, called a pressure equalization (PE) or tympanostomy tube, is inserted into the eardrum to ventilate and equalize pressure in the middle ear.

***Otitis media: An ear infection (acute otitis media) is most often a bacterial or viral infection that affects the middle ear, the air-filled space behind the eardrum that contains the tiny vibrating bones of the ear. Children are more likely than adults to get ear infections.

Young, crying child with a middle ear infection. Diagram of the location of the infected middle ear.

Image result for ear tubes

***An otoscope or auriscope is a medical device which is used to look into the ears. Health care providers use otoscopes to screen for illness during regular check-ups and also to investigate ear symptoms. An otoscope potentially gives a view of the ear canal and tympanic membrane or eardrum.
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Podcast 12-Eye Anatomy-S Thomas.MP3

Pd 1-Flatulence, Pd 2-Afterimages, Pd 3-5-Reaction Time
***You must improvise...Glass jars replaced by plastic cups...

***gelcaps used instead of tablets...
***Always use common sense and follow directions!

Lab 1: Know why simethicone is taken for gas relief(flatulence)...
Lab 2: The most interesting color afterimages are negative afterimages. If you stare at the red color for 30 seconds or more, the cells in your retina that respond to red will fatigue and will fire less. When you switch over to a white surface, your eyes subtract the red and you see its complementary color green.
Lab 3: 

Podcast 11-The Eye-S Thomas.MP3