Collin College, A&P 2401 Lab Practical 2 Study Guide

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suspensory ligaments

Identify C

<p>Identify C</p>
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cornea

Identify

<p>Identify</p>
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fovea centralis

Identify A

<p>Identify A</p>
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optic disk

Identify B

<p>Identify B</p>
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macula lutea

Identify (yellow)

<p>Identify (yellow)</p>
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inferior oblique muscle

Identify.

<p>Identify.</p>
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lacrimal gland

Identify.

<p>Identify.</p>
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lens

Identify A.

<p>Identify A.</p>
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vitreous body

Identify B.

<p>Identify B.</p>
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medial rectus muscle

Identify.

<p>Identify.</p>
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medial rectus muscle

Identify A

<p>Identify A</p>
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inferior rectus muscle

Identify B

<p>Identify B</p>
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superior rectus muscle

Identify C

<p>Identify C</p>
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optic nerve

Identify.

<p>Identify.</p>
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sclera

Identify A

<p>Identify A</p>
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pupil

Identify A

<p>Identify A</p>
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iris

Identify B

<p>Identify B</p>
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ciliary body

Identify C

<p>Identify C</p>
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sclera

Identify C

<p>Identify C</p>
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choroid

Identify B

<p>Identify B</p>
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retina

Identify A

<p>Identify A</p>
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retina

Identify B.

<p>Identify B.</p>
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choroid

Identify C

<p>Identify C</p>
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ciliary muscles

Identify B.

<p>Identify B.</p>
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oculomotor nerve

What cranial nerve innervates B?

<p>What cranial nerve innervates B?</p>
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contract; relax; rounded

In order to focus on close objects, B will ____, C will _____, and the lens will become ____.

<p>In order to focus on close objects, B will ____, C will _____, and the lens will become ____.</p>
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relax; contract; flattened

In order to focus on far objects, B will ____, C will _____, and the lens will become ____.

<p>In order to focus on far objects, B will ____, C will _____, and the lens will become ____.</p>
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The pupils will dilate.

What happens when A contracts?

<p>What happens when A contracts?</p>
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The pupils will constrict.

What happens when B contracts?

<p>What happens when B contracts?</p>
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left

The right visual field is seen on the ____ sides of each eye.

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right

The left visual field is seen on the ____ sides of each eye.

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left occipital lobe

The right visual field is processed and interpreted in the which lobe of the brain?

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right occipital lobe

The left visual field is processed and interpreted in the which lobe of the brain?

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optic chiasm

The nasal retinal fibers from each eye cross-over at the ________.

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You would be blind in the left eye.

How would damage to both types of fibers in the left optic nerve affect vision?

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You would lose the right field of vision in your left eye.

How would damage to the temporal retinal fibers in the left optic nerve affect vision?

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optic chiasm

Damage to the _____ would result in tunnel vision. You would lose all peripheral vision.

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right optic tract

Damage to the _______ would result in loss of your left field of vision in both eyes.

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inferior oblique muscle

What extra-ocular muscle elevates the eye & turns it laterally?

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superior oblique muscle

What extra-ocular muscle depresses the eye & turns it laterally?

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lateral rectus muscle

What extra-ocular muscle moves the eye to the side?

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medial rectus muscle

What extra-ocular muscle moves the eye to the midline?

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superior rectus muscle

What extra-ocular muscle moves the eye up and turns it medially?

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inferior rectus muscle

What extra-ocular muscle moves the eye down and turns it medially?

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III

Cranial nerve ___ innervates all of the labeled muscles.

<p>Cranial nerve ___ innervates all of the labeled muscles.</p>
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IV

Cranial nerve ___ innervates the labeled muscle.

<p>Cranial nerve ___ innervates the labeled muscle.</p>
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lateral rectus muscle

Identify.

<p>Identify.</p>
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VI

Cranial nerve ___ innervates the labeled muscle.

<p>Cranial nerve ___ innervates the labeled muscle.</p>
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pupillary radial muscle; dilates the pupils

Identify A. What is its function?

<p>Identify A. What is its function?</p>
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pupillary sphincter muscle; constricts the pupils

Identify B. What is its function?

<p>Identify B. What is its function?</p>
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iris

Collectively, A and B are components of the _____.

<p>Collectively, A and B are components of the _____.</p>
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vestibule

Identify 26

<p>Identify 26</p>
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vagus nerve (CN X)

Gustatory information is carried to the brain from which cranial nerve from structure labeled A?

<p>Gustatory information is carried to the brain from which cranial nerve from structure labeled A?</p>
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hypoglossal nerve (CN XII)

What cranial nerve controls movements of this structure?

<p>What cranial nerve controls movements of this structure?</p>
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auditory tube

Identify A

<p>Identify A</p>
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external acoustic canal or external auditory meatus

Identify B

<p>Identify B</p>
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pinna or auricle

Identify C

<p>Identify C</p>
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cochlea

Identify D

<p>Identify D</p>
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tympanic membrane

Identify E

<p>Identify E</p>
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superior semicircular canal responsible for sensing rotation around a sagittal plane

Name and give function of A?

<p>Name and give function of A?</p>
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lateral semicircular canal responsible for sensing rotation around a transverse plane

Name and give function of B?

<p>Name and give function of B?</p>
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posterior semicircular canal responsible for sensing rotation around a coronal plane

Name and give function of C?

<p>Name and give function of C?</p>
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organ of Corti (spiral organ)

Identify 20

<p>Identify 20</p>
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basilar membrane

Identify 19

<p>Identify 19</p>
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tectorial membrane

Identify 18

<p>Identify 18</p>
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cochlea

This is a model of a section through what structure in the inner ear?

<p>This is a model of a section through what structure in the inner ear?</p>
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tympanic duct (scala tympani)

Identify 16

<p>Identify 16</p>
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vestibular duct (scala vestibuli)

Identify 15

<p>Identify 15</p>
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cochlear nerve

Identify 1

<p>Identify 1</p>
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stapes

Identify 2

<p>Identify 2</p>
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malleus

Identify 3

<p>Identify 3</p>
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vestibular nerve

Identify 4

<p>Identify 4</p>
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semicircular canals

Identify 5

<p>Identify 5</p>
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incus

Identify 6

<p>Identify 6</p>
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malleus

Identify 30

<p>Identify 30</p>
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incus

Identify 31

<p>Identify 31</p>
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stapes

Identify 32

<p>Identify 32</p>
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glossopharyngeal nerve (CN IX)

Gustatory information is carried to the brain from which cranial nerve from structure labeled B?

<p>Gustatory information is carried to the brain from which cranial nerve from structure labeled B?</p>
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facial nerve (CN VII)

Gustatory information is carried to the brain from which cranial nerve from structure labeled C?

<p>Gustatory information is carried to the brain from which cranial nerve from structure labeled C?</p>
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olfactory tract

Identify 11

<p>Identify 11</p>
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olfactory bulb

Identify 12

<p>Identify 12</p>
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olfactory nerve (CN I)

Identify 13

<p>Identify 13</p>
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auditory ossicles

The malleus, incus, and stapes are collectively referred to as the ________.

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external

The pinna and external auditory meatus are components of the ____ ear.

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middle

The malleus, incus, stapes, and tympanic cavity are components of the ____ ear.

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inner

The semicircular canals, cochlea, and vestibule are components of the ____ ear.

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static equilibrium

The saccule and utricle are structures involved in what special sense?

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dynamic equilibrium

The semicircular canals are structures involved in what special sense?

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organ of Corti

What is the sensory receptor for hearing?

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perilymph

The vestibular and tympanic ducts are filled with ____.

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equilibrium

Sensory information concerning ____ is carried along the structure labeled 27.

<p>Sensory information concerning ____ is carried along the structure labeled 27.</p>
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hearing

Sensory information concerning ____ is carried along the structure labeled 28.

<p>Sensory information concerning ____ is carried along the structure labeled 28.</p>
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utricle

Identify 29

<p>Identify 29</p>
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saccule

Identify 30

<p>Identify 30</p>
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endolymph

The cochlear duct is filled with what fluid?

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cochlear duct (scala media)

Identify 17

<p>Identify 17</p>
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endolymph

What fluid is found in the labeled structure?

<p>What fluid is found in the labeled structure?</p>
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15, 16

Perilymph is found in what labelled structure(s)?

<p>Perilymph is found in what labelled structure(s)?</p>
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17

Endolymph is found in what labelled structures?

<p>Endolymph is found in what labelled structures?</p>
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posterior semicircular canal

What structure in the inner ear contains the sensory organ involved in sensing rotation around a coronal plane?