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BLG 101 Chapter 11 Exam questions and answers 100% accurate
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BLG 101 Chapter 15: Special Senses:JUST VISION
5 special senses of our body - answervision
taste
smell
hearing
equilibrium
What does the lacrimal apparatus do? - answerproduces, distributes, and removes
tears
Why is the lacrimal apparatus important? 2 - answerlubricates the eyes + keeps them
bacteria-free
what are the three layers of the eyeball wall? - answer1. fibrous layer
2. vascular layer
3. inner layer
What is the outermost layer of the eyeball - answerfibrous layer
What type of tissue is the fibrous layer - answerdense avascular connective tissue
what are the two regions of the fibrous layer - answersclera and cornea
what does the sclera do - answerprotects and shapes the eye
What does the cornea do? - answerlets light enter the eye
bends light as it enters the eye
which part of the eye has pain receptors contributing to blinking and tearing reflexes -
answercornea
what are the three regions of the vascular layer of the eye - answerChoroid region
ciliary body
iris
, what does the choroid region do - answersupplies blood to all layers of the eyeball
which region controls the shape of the lense? - answerciliary body
capillaries of ________ processes secrete fluid for anterior segment of eyeball -
answerciliary
What is the iris - answerthe coloured part of the eyeball between the cornea and lens
which region of the eyeball is the pupil found? - answeriris
what is the pupil - answercentral opening that regulates the amount of light entering the
eye
which two parts of the eye interact with entering light? - answerpupil & cornea
what causes the pupil to dilate (2)
what muscles are involved (1)
what type of control is this (1) - answerdistant vision + dim light
radial muscles (think tunnel vision)
sympathetic control
(THINK when people are in love, their eyes dilate = sympathetic like emotions and stuff)
what causes the pupil to constrict? (2)
what muscles are involved? (1)
what type of control is this (1) - answernear vision and bright light
circular muscles
parasympathetic control
what layer is the retina found - answerinner layer
what three things does the retina contain - answermillions of photoreceptor cells
neurons
glial cells
what makes up the retina's delicate two-layer membrane? - answerouter layer:
pigmented layer
inner layer: neural layer
What does the pigmented layer of the retina do? - answerAbsorbs light and prevents its
scattering
what three main neurons is the neural layer composed of - answerphotoreceptors,
bipolar cells, ganglion cells
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