Chapter 12 Notes.notebook
February 19, 2016
Quiz
1. How do ions cross the cell membrane from low concentration to high concentration?
2. What is the difference in charge (in mV) of a neuron at rest?
3. What is the main ion that is found outside of the neuron when the neuron is at rest?
4. When the difference of charge is neutralized by Na+ ions flooding into a neuron, this is called.____________.
5. What ion is involved to help release neurotransmitter from the end of the neuron?
6.What neurotransmitter is involved in slowing the heartrate and moving skeletal muscle?
7. What disease (caused by a bacteria) causes muscles to be paralyzed?
8. Parkinson's disease is caused by the lack of which neurotransmitter?
9. What disease gives you a 50% chance of getting it if you had a parent with the condition?
10. What is the speed of a nerve impulse in a myelinated neuron?
Feb 12­1:28 PM
Objectives of the Day.
1. Why do we need two eyes?
2. Be able to label a diagram of the eye.
3. Explain the function of the parts of the eye.
4. What is the conjunctiva? and what does it do?
5. What is it called when you have an infection of your conjunctiva?
What is the fovea centralis and what does it do?
Feb 14­8:54 AM
1
Chapter 12 Notes.notebook
February 19, 2016
The Eye
pg 413 blind spot
Feb 13­8:37 AM
Why do we need two eyes?
Feb 14­8:47 AM
2
Chapter 12 Notes.notebook
February 19, 2016
The Human Eye ­ Anatomy
retina
ciliary body
cornea
optic nerve
pupil
anterior compartment
iris
lens
posterior compartment
sclera
choroid
Sep 17­9:58 AM
The Human Eye ­ Anatomy
retina
ciliary body
cornea
optic nerve
pupil
anterior compartment
iris
lens
posterior compartment
sclera
choroid
Sep 17­9:58 AM
3
Chapter 12 Notes.notebook
February 19, 2016
The Human Eye ­ Anatomy
retina
choroid
sclera
ciliary body
retinal blood vessels
optic nerve
lens
vit
reo
fovea centralis
us
hu
mo
r
iris
pupil
cornea
anterior compartment
aqueous humor
posterior compartment
What is the function of the fovea centralis?
Area where cone cells (cells used for sight) are concentrated to produce the most distinct, clear image.
Sep 17­9:58 AM
The conjunctiva
The thin, transparent membrane covering the sclera that produces mucous
Feb 15­8:19 AM
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Chapter 12 Notes.notebook
February 19, 2016
Inflammation of the conjunctiva is called conjunctivitis or 'pink eye'
Feb 19­8:34 AM
Purpose of the Cornea
Its main purpose is to focus light into the eye. I
The cornea is the only outer area where light is allowed into the eye. The cornea's bulging shape accounts for 80% of the eye's focusing. It bulges just like a magnifying glass.
Feb 19­8:23 AM
5
Chapter 12 Notes.notebook
February 19, 2016
Where is the vitreous humor found?
Where is the aqueous humor found?
Aug 12­10:47 AM
Purpose of the lens
Functions to focus light onto the retina
Feb 19­8:35 AM
6
Chapter 12 Notes.notebook
February 19, 2016
The Human Eye ­ Function
What two structures help the eye to focus?
What is the function of the pupil?
What structure helps the lens to change shape?
What structure, in the back of the eye, is the location where the image focused?
Sep 17­9:58 AM
Homework
Read pages 413­415
1. Explain what myopia, hyperopia, astigmatism, glaucoma,cataracts and LASIK surgery are.
2. Label the diagram of the ear.
Feb 14­8:59 AM
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