Unit 2: Nervous System À Week 2 and 3 Notes

Name: ______Hr: ______

Unit 2: Nervous System  Week 2 and 3 Notes

Topic: ______Date: ______

(1) Smell: - Smell =

- Inside of your nose is lined with olfactory receptors…

(2) Smell Memory: - Smell strongly connected to emotion…

- Each individual perceives smell differently…. (3) Taste: - Taste =

- Tongue is covered in papillae projections, covered in “taste buds” or gustatory cells:

(4) Taste Regions on Tongue: - Sweet:

- Sour:

- Salty:

- Bitter: (5) Touch: - Touch =

- Skin contains pressure + temperature receptors… a) Meissner’s Receptors =

b) Paccinian =

c) Nociceptors =

d) Thermoreceptors = Topic: ______Date: ______

(1) Ear Design: -

(2) Vibrations: - Sound Waves 

- Tympanic Membrane 

- Stirrup  (3) Cochlea: - Cochlea =

- Contains Organ of Corti:

- Basilar Membrane:

- Fluid  Receptors  Cochlear Nerve  Brain

(4) Equilibrium & Balance: -

- 2 Types of Equilibrium:

(5) Static Equilibrium: - Head Balance

- Static Receptors = Maculae….

- Tells your brain when your head is not upright. (6) Dynamic Equilibrium: -

- Semicircular Canals of Cochlea: (7) Motion Sickness: - Inefficient dynamic equilibrium…

- Unique to each individual

(8) Deafness: - Deafness =

- Types:

(9) Conduction Deafness: -

- Causes:

- Usually temporary, solved by cleaning or surgery

(10) Sensorineural Deafness: - Damage to actual parts of ears:

- Often permanent Topic: ______Date: ______

(1) Outer Layers of The Eye: - 3 Layers surrounding inner fluid:

- Inner Fluid = Humor:

(2) The Sclera: -

- Contains the cornea:

(3) The Choroid: - Made of darker pigments:

- Contains ciliary body and the iris: (4) The Retina: - Contains photoreceptors (rods + cones):

- Rods =

- Cones =

- Impulses from multiple receptors  In Between Colors

(5) Color Blindness: - Monochromacy:

- Dichromacy:

(6) Light Refraction & The Lens: - Light passes through the cornea and Lens to enter the eyeball… - Eye controls amount of light entering with Iris + Lens:

(7) Types of Eyesight: - Emmetropia =

- Myopia =

- Hyperopia =

- Astigmatism =

(8) Myopia: - Cornea too convex or bulging:

- Solution: (9) Hyperopia: - Cornea is too concave (flattened out):

- Solution: (10) Astigmatism: - Uneven cornea or lens:

- Solution: