Senses Flashcards

1
Q

What are the specialized cells that monitor conditions inside or outside of the body?

A

Sensory Receptors

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2
Q

What’s the area monitored by a single receptor cell?

A

Receptive Field

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3
Q

What is the conscious awareness of a sensation is called?

A

Perception

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4
Q

What’s the reduction in the sensitivity in presence of a constant stimulus called?

A

Adaptation

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5
Q

What are the four classes of general sensory receptors?

A

Nociceptors, Thermoreceptors, Mechanoreceptors, Chemoreceptors

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6
Q

What do nociceptors respond to?

A

Pain

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7
Q

What do thermoreceptors respond to?

A

Temp

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8
Q

What do mechanoreceptors respond to?

A

Touch

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9
Q

What do chemoreceptors respond to?

A

Chemical stimuli

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10
Q

Whats the sensation that happens when the burning or aching pain that is transmitted by unmyelinated axons?

A

Slow pain

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11
Q

The perception of pain in an unrelated area of the body is called:

A

Referred pain

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12
Q

What are taste and smell are examples of?

A

Special senses that use chemoreceptors

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13
Q

What are the three classes of mechanoreceptors?

A

Tactile, Baroreceptors, and Proprioceptors

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14
Q

What do tactile mechanoreceptors respond to?

A

Touch

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15
Q

What do baroreceptors respond to?

A

Pressure

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16
Q

What do proprioreceptors resond to?

A

Positions (joints)

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17
Q

What does the term olfaction represent?

A

“Smell”

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18
Q

What are the regenerative stem cells in the olfactory epithelium called?

A

Basal Cells

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19
Q

What are chemicals in the air that stimulate olfactory receptors?

A

Odorants

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20
Q

Why do we have emotional and behavioral responses to smell?

A

Odors take a direct route to the limbic system, which then goes to emotions and memory

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21
Q

What is the only sensory information not routed through the thalamus?

A

Smell

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22
Q

Where are gustatory receptors found?

A

They are found in the gustatory cells of the taste buds

23
Q

What are the five primary taste sensations?

A

Sweet, Sour, Bitter, Salty, and Umami

24
Q

Where are the greatest number of taste buds found?

A

The back of the tongue

25
What are the structures that protect and keep surface of eye lubricated?
The eyelids
26
What's the fancy term for Pink Eye?
Conjunctivitis
27
What is the pathway of tears?
Lacrimal gland, lacrimal canals, lacrimal sac, nasolacrimal duct
28
What is the approximate weigh of a human eye?
8g
29
What are the three layers of the eye wall from outside to inside?
1. Fibrous layer 2. Vascular layer 3. Inner layer
30
What is another name for the inner layer of an eye?
Retina
31
What's the part of the eye that contains blood vessels, pigment cells, and two layers of pupillary muscles that change the size of the pupil?
Iris
32
Where is aqueous humor found?
Anterior Cavity
33
What is meant by “accommodation”
Changing the shape of the lens to keep the focal length at a constant
34
What adjusts the shape of the lens for focusing?
Suspensory ligaments
35
What are the two types of photoreceptors?
Rods and cones
36
What are used in bright light to detect color?
Cones
37
Where are the highest number of cones found?
Fovea
38
What's the disease when lens loses its transparency?
Cataracts
39
How does the lens focus the visual image on photoreceptors?
By changing it's shape
40
What's the process that the ciliary muscle and lens use for distant vision?
Ciliary muscle is relaxed, and lens flattened
41
What is hyperopia?
Farsightedness
42
What's myopia?
Nearsightedness
43
What are the three different types of cones?
Red, Blue, and Green
44
Is colorblindness more common in males or females?
Males
45
What's the most common form of colorblindness?
Red- Green
46
What are the ossicles?
Bones in the middle ear
47
What are the bones in the middle ear?
Malleus, Incus, and Stapes
48
Where do the ossicles connect?
The ear drum, to the oval window
49
Where are the receptors for hearing located?
Cochlear Duct
50
What is the order in which structures transfer sound?
Auditory canal, tympanic membrane, malleus, incus, stapes oval window, to the inner ear
51
44. All equilibrium sensations are provided by hair cells of the ________
Vestibular Complex
52
What is pitch?
Pitch is a frequency determined by which part of cochlear duct is stimulated
53
What is volume?
Volume is the intensity determined by how many hair cells are activated at that site
54
Whats the type of deafness resulting from blockage of vibrations in middle ear?
Conductive deafness