NEURO PRACTICE FINAL

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Questions and Answers

Which structure or hairs would be more sensitive when going up or down in an elevator?

  • Saccule (correct)
  • Crista
  • Ampulla
  • Gelatinous cupula

Sensations on the skin are detected by cutaneous receptors.

True (A)

Fast receptors occur ___ after stimuli (__ seconds)

  • immediately, 0.1 seconds (correct)
  • slowly, 2-4 seconds
  • after a delay, 5-10 seconds
  • never, not applicable

What is a consequence of damage to the lateral spinothalamic pathway?

<p>Inability to feel pain and temperature (B)</p> Signup and view all the answers

What is another name for the eardrum?

<p>Tympanic membrane (A)</p> Signup and view all the answers

What functions does the inner ear contribute to?

<p>Both Equilibrium and Hearing (C)</p> Signup and view all the answers

What is another name for the auditory tube?

<p>Eustachian tube (A)</p> Signup and view all the answers

What is most likely to cause Otitis Media (Ear infection) because it travels up the Auditory/Eustachian tube?

<p>Strep (B)</p> Signup and view all the answers

During swallowing and yawning, what opens allowing air to enter or leave the middle ear, equalizing with atmospheric air pressure in the middle ear?

<p>Eustachian / Auditory Tube (A)</p> Signup and view all the answers

Otitis Media is an inner ear infection.

<p>False (B)</p> Signup and view all the answers

What is Myopia?

<p>Near sightedness (A)</p> Signup and view all the answers

If the right eye has a detached retina on the outer lower portion, what visual impairment might occur?

<p>Loss of vision in the upper left (C)</p> Signup and view all the answers

What is astigmatism?

<p>Irregular curvature of the lens (A)</p> Signup and view all the answers

What is the term for normal vision?

<p>Emmetropia (C)</p> Signup and view all the answers

What is Presbyopia?

<p>Gradual loss of your eyes' ability to focus on nearby objects - lens gets thicker + less elastic with age. (B)</p> Signup and view all the answers

What are cataracts?

<p>Loss of Accommodation d/t Lens getting thicker + less elastic w Age (A)</p> Signup and view all the answers

What is Presbycusis?

<p>Hearing loss due to damage and loss of hair cells in the Organ of Corti (B)</p> Signup and view all the answers

What is tinnitus?

<p>A condition characterized by ringing or buzzing in the ears (B)</p> Signup and view all the answers

Which of the following statements is FALSE?

<p>Rubrospinal tract is not a pyramidal pathway (A)</p> Signup and view all the answers

What are the stages of sleep?

<p>NREM + REM Sleep (A)</p> Signup and view all the answers

What is required for the consolidation of memory from short term to long term? (Select all that apply)

<p>All of the above (D)</p> Signup and view all the answers

Do second order neurons go from the PNS to the CNS?

<p>False (B)</p> Signup and view all the answers

Tensor Tympani is innervated by which cranial nerve (CN)?

<p>CN V (Trigeminal) (A)</p> Signup and view all the answers

Taste in the anterior tongue is detected by which of the following cranial nerves?

<p>Facial nerve (VII) (B)</p> Signup and view all the answers

Taste in the epiglottis is detected by which cranial nerve?

<p>Vagus nerve (CN X) (A)</p> Signup and view all the answers

Which of the following options is the Olfactory nerve?

<p>Cranial Nerve I (A)</p> Signup and view all the answers

The Vestibular nuclei (associated with balance) send commands to:

<p>Thalamus (B)</p> Signup and view all the answers

Which area has the highest visual acuity?

<p>Central fovea (A)</p> Signup and view all the answers

What is the function of Aqueous humor?

<p>Nourishes Cornea + Lens (A)</p> Signup and view all the answers

Constriction of circular muscles in the retina is innervated by which of the following?

<p>Parasympathetic fibers (which are innervated by CN III - Oculomotor) (A)</p> Signup and view all the answers

Parts of the Brainstem include (select all that apply)

<p>Medulla Oblongata (D), Midbrain (A), Pons (@)</p> Signup and view all the answers

Is the RAS part of the Reticular Formation?

<p>True (A)</p> Signup and view all the answers

What does the RAS (Reticular Activating System) do?

<p>Controls arousal and sleep (C)</p> Signup and view all the answers

Pitch and frequency are measured in what unit?

<p>Hertz (B)</p> Signup and view all the answers

Volume is measured in which of the following?

<p>Decibels (C)</p> Signup and view all the answers

Any sensation you are aware of goes to the?

<p>Cerebral Cortex (A)</p> Signup and view all the answers

What do mitral cells release?

<p>Glutamate (C)</p> Signup and view all the answers

Serotonin is made from which amino acid?

<p>Tryptophan (A)</p> Signup and view all the answers

Sensation is the conscious and unconscious awareness of external or internal stimuli.

<p>True (A)</p> Signup and view all the answers

PERCEPTION is Conscious awareness and Interpretation of a sensation

<p>True (A)</p> Signup and view all the answers

Somatic sensory modalities (a type of general sense) include which of the following?

<p>Tactile sensations (touch, pressure, vibration, tickle and itch) (A)</p> Signup and view all the answers

Somatic sensory modalities (a type of general sense) include (choose all that apply)

<p>Temperature (A), Pain (B), Touch (D), Proprioception (@)</p> Signup and view all the answers

Visceral senses contain information about _____ _____.

<p>internal organs (B)</p> Signup and view all the answers

ONLY _____ order neurons have Sensory Receptors

<p>First (A)</p> Signup and view all the answers

Which type of receptors detect stimuli?

<p>All of the above (D)</p> Signup and view all the answers

What is the definition of adaptation?

<p>Tendency for the generator or receptor potential to decrease in amplitude during a maintained constant stimulus (A)</p> Signup and view all the answers

Which structures are associated with static equilibrium in the body?

<p>Saccule &amp; Utricle (D)</p> Signup and view all the answers

Semicircular ducts are filled with which substance?

<p>Endolymph (B)</p> Signup and view all the answers

Utricle and Saccule have a small thickened region called the:

<p>Macula (A)</p> Signup and view all the answers

Endolymph within the Ampulla

<p>Lags during rotational acceleration (associated with Dynamic equilibrium) (B)</p> Signup and view all the answers

Semicircular ducts contain a swollen area called the:

<p>Ampulla (A)</p> Signup and view all the answers

What is plasticity?

<p>Capability for change with learning (A)</p> Signup and view all the answers

What is a cataract?

<p>A loss of transparency of the lens (A)</p> Signup and view all the answers

Match the following characteristics with either Rods or Cones from the eye:

<p>Rods = Responsible for low-light vision Cones = Responsible for color vision Rods = More numerous in the peripheral retina Cones = Concentrated in the fovea</p> Signup and view all the answers

Which cranial nerves (CN) are associated with taste?

<p>CN VII (Facial nerve) (C), CN IX (Glossopharyngeal nerve) (D), CN X (Vagus nerve) (@)</p> Signup and view all the answers

Which cranial nerve (CN) is the optic nerve?

<p>CN II (B)</p> Signup and view all the answers

Where is aqueous humor found?

<p>BOTH the Posterior and Anterior Chamber of the eye (C)</p> Signup and view all the answers

Aqueous humor is replaced every 90 minutes but Vitreous humor is _____

<p>not replaced (A)</p> Signup and view all the answers

Where is the iris located?

<p>Sits between the Cornea and Lens (A)</p> Signup and view all the answers

What is the function of the choroid?

<p>To provide nutrients to the retina (A)</p> Signup and view all the answers

What is the function of the Ciliary Body/Ciliary Process?

<p>Produces aqueous humor (A)</p> Signup and view all the answers

Which of the following statements about hyperacusis is NOT true?

<p>It occurs only in older individuals. (C)</p> Signup and view all the answers

What is NOT true about semicircular canals?

<p>There are 4 rings. (A)</p> Signup and view all the answers

What is the primary function of the eyelids (palpebrae)?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary function of the Auditory/Eustachian tube?

<p>Balances out pressure in the middle ear (A)</p> Signup and view all the answers

Chemicals that have an odor and can therefore stimulate the olfactory hairs are called what?

<p>Odorants (A)</p> Signup and view all the answers

Exteroceptors receive hearing, vision, smell, taste, touch, pressure, pain, vibration, temperature, and proprioception.

<p>False (B)</p> Signup and view all the answers

An increase in frequency leads to an:

<p>Increase in Pitch (A)</p> Signup and view all the answers

The middle ear is a(n):

<p>Air filled cavity (A)</p> Signup and view all the answers

The Auricle is also called?

<p>Pinna (A)</p> Signup and view all the answers

What is the function of the Lacrimal Apparatus?

<p>To produce and drain the tears (A)</p> Signup and view all the answers

What is the function of the eyebrows?

<p>They arch transversely above the eyeballs and help protect them from foreign objects, perspiration, and direct rays of the sun. (A)</p> Signup and view all the answers

What is the function of the Tarsal Plate?

<p>A thick fold of connective tissue that gives form and support to the eyelids (A)</p> Signup and view all the answers

What is the function of the extrinsic eye muscles?

<p>Move eyeball medially, laterally, superiorly, or inferiorly (B)</p> Signup and view all the answers

What is the primary function of the Tarsal (Meibomian) glands?

<p>Modified sebaceous glands; secretion helps keep eyelids from adhering to one another (B)</p> Signup and view all the answers

What is the function of the Conjunctiva?

<p>A thin, protective mucous membrane that lines the inner aspect of eyelids and passes from eyelids onto the surface of the eyeball, where it covers the sclera (A)</p> Signup and view all the answers

What is the function of the iris?

<p>Coloured portion of eyeball; regulates amt of light entering posterior part of eyeball (A)</p> Signup and view all the answers

What is the function of the retina?

<p>Innermost layers of eyeball; beginning of visual pathway; contains rods + cones (A)</p> Signup and view all the answers

What is the circular band of smooth muscle that alters the shape of the lens for near or far vision?

<p>Ciliary muscles (A)</p> Signup and view all the answers

Watery fluid in the anterior cavity that helps nourish the lens and cornea, and helps maintain the shape of the eyeball is filled with vitreous humor.

<p>False (B)</p> Signup and view all the answers

What is the term for the white part of the eye that gives shape to the eyeball, makes it more rigid, and protects its inner parts?

<p>Sclera (C)</p> Signup and view all the answers

Which part of the eye is avascular and includes the cornea and sclera?

<p>Fibrous tunic (C)</p> Signup and view all the answers

What structure is located between the external auditory canal and the middle ear?

<p>Tympanic Membrane (A)</p> Signup and view all the answers

What is the name of the oval central portion of the bony labyrinth that contains the utricle and saccule?

<p>Vestibule (B)</p> Signup and view all the answers

Which receptor is responsible for static equilibrium and contributes to some aspects of dynamic equilibrium, consisting of hair cells and supporting cells?

<p>Macula (B)</p> Signup and view all the answers

What is the correct term for the combination of Malleus, Incus, and Stapes?

<p>Ossicles (A)</p> Signup and view all the answers

Which tube connects the middle ear to the nasopharynx for pressure equalization?

<p>Eustachian Tube (A)</p> Signup and view all the answers

Which structure contains the Spiral organ?

<p>Cochlea (A)</p> Signup and view all the answers

What is the fluid found within the membranous labyrinth that creates pressure waves, causing vibration of the basilar membrane?

<p>Endolymph (A)</p> Signup and view all the answers

What is the collective term for the receptor organs responsible for equilibrium, including the saccule, utricle, and semicircular canals?

<p>Vestibular Apparatus (A)</p> Signup and view all the answers

What is the swollen enlargement in semicircular canals that contains structures involved in dynamic equilibrium?

<p>Ampulla (A)</p> Signup and view all the answers

What is the name of the opening between the middle ear and the internal ear that is enclosed by a membrane called the secondary tympanic membrane?

<p>Round Window (A)</p> Signup and view all the answers

What is the flap of elastic cartilage covered by skin that captures sound waves

<p>Auricle (A)</p> Signup and view all the answers

What is the fluid found inside the bony labyrinth that bulging of the oval window causes pressure waves in?

<p>Perilymph (A)</p> Signup and view all the answers

What is the name of the opening between the middle and inner ear that receives the base of the stapes?

<p>Oval Window (A)</p> Signup and view all the answers

Dermal Papillae of Glabrous Skin (aka Hairless skin) is associated with which receptor?

<p>Meissner Corpuscles (A)</p> Signup and view all the answers

Meissner Corpuscles are abundant in what parts of the body? (Choose all that apply)

<p>Fingertips (A), Tip of the tongue (C), Soles (@), Genitalia (@)</p> Signup and view all the answers

Meissner Corpuscles detect:

<p>Touch + Lower-Frequency Vibration (A)</p> Signup and view all the answers

Merkel Discs detect:

<p>Touch + Pressure (A)</p> Signup and view all the answers

Where are Merkel Discs located in the body?

<p>In the basale epidermis of the skin (A)</p> Signup and view all the answers

Match Type I Cutaneous Mechanoreceptors and Type II Cutaneous Mechanoreceptors with the correct sensory receptors:

<p>Type II Cutaneous Mechanoreceptors = Ruffini Corpuscles Type I Cutaneous Mechanoreceptors = Merkel Discs</p> Signup and view all the answers

Where in the body are Ruffini corpuscles found? (Choose all that apply)

<p>In the ligaments and tendons (B), In the deep dermis (A)</p> Signup and view all the answers

Ruffini Corpuscles detect touch and pressure.

<p>True (A)</p> Signup and view all the answers

Which of the following detects higher-frequency vibrations?

<p>Lamellar or Pacinian Corpuscles (A)</p> Signup and view all the answers

Where are Joint Kinesthetic Receptors (Jt Kinesthetic Receptors) located?

<p>Within + Around Articular Capsules of Synovial joints (A)</p> Signup and view all the answers

Jt Kinesthetic Receptors detect:

<p>Joint Position + Movement (A)</p> Signup and view all the answers

Cold receptors are attached to:

<p>Small-diameter Myelinated A fibers (A)</p> Signup and view all the answers

Warm receptors are attached to:

<p>Small-Diameter Unmyelinated C fibers (A)</p> Signup and view all the answers

Cold receptors are more numerous and found more superficial than warm receptors.

<p>True (A)</p> Signup and view all the answers

What is the route of light entering the eye?

<p>Cornea -&gt; Pupil -&gt; Lens -&gt; Retina (A)</p> Signup and view all the answers

What is the correct flow of tears in the tear drainage system?

<p>Lacrimal gland - Excretory lacrimal ducts - Superior or inferior lacrimal canal - Lacrimal sac - Nasolacrimal duct - Nasal cavity (A)</p> Signup and view all the answers

Which type of receptors are located in muscles, tendons, joints, and the inner ear?

<p>Proprioceptors (A)</p> Signup and view all the answers

Which type of receptors are located in blood vessels, visceral organs, muscles, and the nervous system?

<p>Interoceptors (B)</p> Signup and view all the answers

What type of receptors detect temperature changes?

<p>Thermoreceptors (A)</p> Signup and view all the answers

What type of receptors detect light that strikes the retina of the eye?

<p>Photoreceptors (A)</p> Signup and view all the answers

What are the receptors located at or near the external surface of the body called?

<p>Exteroceptors (C)</p> Signup and view all the answers

Which of the following types of nerve endings are bare dendrites associated with pain, thermal sensations, tickle, itch, and some touch sensation?

<p>Free Nerve Endings (A)</p> Signup and view all the answers

What type of receptors sense the osmotic pressures of body fluids?

<p>Osmoreceptors (C)</p> Signup and view all the answers

Which type of receptors detect chemicals in the mouth, nose, and body fluids?

<p>Chemoreceptors (B)</p> Signup and view all the answers

Which type of receptors are responsible for detecting mechanical pressure or distortion?

<p>Mechanoreceptors (A)</p> Signup and view all the answers

Which receptors respond to stimuli resulting from physical or chemical damage to tissues?

<p>Nociceptors (A)</p> Signup and view all the answers

What are dendrites enclosed in a connective tissue capsule called?

<p>Encapsulated Nerve Endings (B)</p> Signup and view all the answers

Pacinian corpuscles detect lower-frequency vibrations.

<p>False (B)</p> Signup and view all the answers

What is a key difference between the Posterior Column – Medial Lemniscus Pathway and the Spinothalamic Pathway?

<p>The Posterior Column pathway transmits fine touch and proprioception, while the Spinothalamic Pathways transmits mainly pain and temperature (C)</p> Signup and view all the answers

Where does the crossover occur within the Spinothalamic Pathways?

<p>Spinal cord (B)</p> Signup and view all the answers

Where does the crossover occur within the Posterior Column – Medial Lemniscus Pathway?

<p>At the level of the medulla oblongata (B)</p> Signup and view all the answers

Nerve impulses that are detected by _____ ____ originate from the face, nasal cavity, and oral cavity consist of a ____-neuron set.

<p>Trigeminothalamic Pathway; 3 (D)</p> Signup and view all the answers

What is the KEY difference between Direct Motor Pathways and Indirect Motor Pathways?

<p>Direct pathways involve fewer synapses than indirect pathways. (A)</p> Signup and view all the answers

What are the 3 tracts that consist within the Direct Motor Pathways?

<p>Lateral corticospinal tract, Anterior corticospinal tract, Corticobulbar tract (A)</p> Signup and view all the answers

Match the Indirect Motor Pathways to their functions:

<p>Reticulospinal Tract = Modulates reflex activity and posture Vestibulospinal Tract = Maintains balance and posture Tectospinal Tract = Coordinates head and eye movements Rubrospinal Tract = Facilitates flexor muscle activity</p> Signup and view all the answers

Flashcards

Saccule Function

Detects vertical movement; more sensitive when going up or down in an elevator.

Cutaneous Receptors

Receptors in the skin that detect sensations.

Fast Receptors

Receptors that occur immediately after stimuli, within 0.1 seconds.

Damage to Lateral Spinothalamic Pathway

Inability to feel pain and temperature due to damage in the lateral spinothalamic pathway.

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Tympanic Membrane

Also known as the eardrum, it vibrates in response to sound waves.

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Inner Ear Function

Contributes to both equilibrium and hearing.

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Eustachian Tube

Also known as the auditory tube, it connects the middle ear to the nasopharynx.

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Cause of Otitis Media

Strep bacteria travel up this tube, potentially causing Otitis Media.

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Auditory Tube Function

During swallowing and yawning, it opens, allowing air to equalize pressure in the middle ear.

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Myopia

Near sightedness; when light focuses in front of the retina.

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Detached retina impairment

Loss of vision in the upper left visual field.

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Astigmatism

Irregular curvature of the lens or cornea leading to blurry vision.

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Emmetropia

Normal vision; light focuses correctly on the retina.

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Presbyopia

Gradual loss of the eyes' ability to focus on nearby objects due to lens thickening and reduced elasticity with age.

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Cataracts

Clouding of the lens, leading to blurred or distorted vision.

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Presbycusis

Hearing loss due to damage and loss of hair cells in the Organ of Corti.

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Tinnitus

Condition characterized by ringing or buzzing in the ears.

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RAS Function

Controls arousal and sleep by activating the cerebral cortex

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Pitch/Frequency Unit

Measured in Hertz (Hz).

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Volume Unit

Measured in decibels (dB).

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Cerebral Cortex & Sensation

The part of the brain responsible for processing and making you aware of any sensation.

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Mitral Cells

Release glutamate.

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Serotonin

Made from Tryptophan.

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Sensation Definition

Conscious and unconscious awareness of external or internal stimuli.

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Perception Definition

Conscious awareness and interpretation of a sensation

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Adaptation

Tendency for the generator or receptor potential to decrease in amplitude during a maintained constant stimulus.

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Saccule & Utricle

Structures associated with static equilibrium in the body.

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Semicircular Ducts

Filled with endolymph.

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Endolymph Function

Lags during rotational acceleration (associated with Dynamic equilibrium).

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