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Study Decks > Brain (A&P Lab 1) > Flashcards

Brain (A&P Lab 1) Flashcards

1
Q

1,300 - 1,400 grams

A

How many grams does the average adult brain weigh?

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2
Q

3 pounds

A

How many pounds does the average adult brain weigh?

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3
Q

Male

A

Which brain is slightly larger, the male or female?

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4
Q

No

A

Does a larger brain equal more intelligence?

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5
Q

The rostral part

A

What is the front part of the brain referred to as?

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6
Q

The forehead

A

The rostral part of the brain is also known as what?

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7
Q

cerebrum, cerebellum, brain stem

A

What are the three main divisions of the human brain?

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8
Q

the cerebrum

A

What is the largest part of the brain?

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9
Q

83%

A

What percentage of the brain is the cerebrum?

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10
Q

left and right cerebral hemispheres

A

What parts make up the cerebrum?

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11
Q

Gyri

A

What are the folds of tissue called?

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12
Q

sulci

A

What are the shallow grooves that separate the gyri called?

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13
Q

have a larger surface area

A

what do the gyri allow the brain to do?

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14
Q

longitudinal fissue

A

what are the right and left hemispheres separated longitudinally down the middle by?

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15
Q

the corpus callosum

A

internally, the brain is joined by a thick bundle of nerves called what?

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16
Q

five

A

how many anatomically and functionally distinct lobes does the cerebrum have?

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17
Q 
frontal
parietal
temporal
occipital
insula
A

what are the five lobes of the cerebrum?

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18
Q

pre-central gyrus

A

What is the very specific gyrus in the frontal lobe called?

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19
Q

the primary motor area of the brain

A

what is the precentral gyrus described as?

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20
Q

motor planning
voluntary mobility
memory
mood (emotions, aggression, and judgement)

A

what is the frontal lobe responsible for?

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21
Q

top part of the brain

A

where is the parietal lobe?

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22
Q

primary sensory cortex

A

what is the primary function of the parietal lobe?

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23
Q

receiving and interpreting information regarding the general senses

A

what is the parietal lobe responsible for?

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24
Q

back of the brain

A

where is the occipital lobe?

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25
left and right of the brain
where is the temporal lobe?
26
hearing smell visual recognition plays a role in learning and memory
what four things are the temporal lobe responsible for?
27
insula
what is the fifth lobe?
28
i6
what is the insula responsible for?
29
the cerebellum
what is the second largest region of the brain?
30
10%
in terms of size, what percentage of the total brain is the size of the cerebellum
31
over 50%
what percentage of the total neurons in the brain are in the cerebellum?
32
motor coordination spatial perception proprioceptive feedback from the muscles organizational skills and management
what are four things the cerebellum is responsible for?
33
the thalamus
what structure in the brain is a sensory relay structure?
34
hypothalamus
what structure in the brain helps to control the pituitary gland?
35
the master gland of the body
what is another term the pituitary gland is referred to as?
36
the mid-brain
what part of the brain has no known function
37
cerebrum to the cerebellum
the pons is a relay center that transmits signals from what area to what area of the brain?
38
the spinal cord
the medulla obleongata connects the brain to what?
39
regulates heart rate regulates blood pressure regulates breathing
what does the medulla oblongata do?
40
11
Of 12 cranial nerves, how many of them originate or terminate in the brain stem?
41
cranial nerve #1 - olfactory nerve
what is the one cranial nerve that does not originate in the brain stem?
42
sense of smell
what is the the olfactory nerve responsible for?
43
optic nerve
what is cranial nerve #2?
44
optic chiasm
the optic nerves are going to cross at something called the
45
sense of vision
what is the optic nerve responsible for?
46
oculomotor nerve
what is cranial nerve #3?
47
the pons
what part of the brain does the oculomotor nerve connect to?
48
eye movement closing eyelids pupillary constriction
what is the oculomotor nerve responsible for?
49
drooping eyelid | eye resting laterally
what are two effects that can take place as a result of a damaged oculomotor nerve?
50
trochlear nerve
what is cranial nerve #4?
51
some eye movements | medial rotation of the eye
what is the trochlear nerve responsible for?
52
eye resting laterally | double vision
what are two things that could result from damage to the trochlear nerve?
53
trigeminal nerve
trigeminal nerve
54
it is the largest cranial nerve
name something notable about the trigeminal nerve
55
ophthalmic branch maxillary branch mandibular branch
what are the three branches of the trigeminal nerve called?
56
v1 and v2 | opthalmic branch and maxillary branch
Which branches of the trigeminal nerve are the sensory branches?
57
detecting pressure | detect temperature and pain
what types of things are these sensory branches going to do?
58
the motor branch
what is the mandibular branch referred to as?
59
ability to cheew (mastication)
what does v3 (mandibular branch) control?
60
loss of sensation difficulty detecting those sensations like temperature and pain affect ability to chew
what would result from damage to the trigeminal nerve?
61
abducens
what is cranial nerve number six?
62
lateral eye movement (turning the eye out)
what is the abducens responsible for?
63
the eye resting medially (turned inward)
what will damage to the abducens result in?
64
facial nerve
what is cranial nerve number seven?
65
both
is the facial nerve sensory, motor, or both?
66
``` smiling laughing crying pouting swallowing salivation ```
what is the motor component of the facial nerve responsible for?
67
taste
what does the sensory component of the facial nerve deal with?
68
Bell's palsy
what ailment is the facial nerve involved in?
69
facial droop lose control or muscle tone of the facial muscles drooling
What effects does Bell's palsy have?
70
vestibular cochlear nerve
what is cranial nerve number 8?
71
hearing and balance
what is the vestibular cochlear nerve responsible for?
72
no
is nerve deafness correctable?
73
glossopharyngeal nerve
what is cranial nerve number 9?
74
both
is the glossopharyngeal nerve responsible for sensory, motor or both?
75
touch and pressure
what responsibilities is the glossopharyngeal nerve responsible for?
76
gag reflex
what motor functions does the glossopharyngeal nerve have?
77
we would lose our ability to taste bitter and sour tasting objects
what would happen if the glossopharyngeal nerve were damaged?
78
vagus nerve
what is cranial nerve number 10?
79
it has the widest distribution of nerve fibers | it will reach the largest number of systems
what is notable about the vagus nerve?
80
``` a feeling of hunger or sense of fullness gastrointestinal discomfort control our ability to swallow control our ability to speak deceleration of our heart rate bronchoconstrictionq ```
list things that the vagus nerve is responsible for
81
it would be fatal
what would happen if both vagus nerves were damaged?
82
accessory nerve
what is cranial nerve #11?
83
swallowing shrugging our shoulders a little bit or head and neck movement
what is the accessory nerve responsible for?
84
hypoglossal nerve
what is cranial nerve #12
85
our tongue movements swallowing manipulate food in our mouths
what is the hypoglossal nerve responsible for?
86
impaired speech | impaired ability to swallow
if we damage it, what will be the affect?
87
dura mater arachnoid mater pia mater
what are the three layers of the meninges?
88
the brain
what organ gets top priority over any other organ for blood, oxygen and nutrient supply?
89
15%
what percentage of blood supply will the brain get?
90
20%
what percentage of oxygen and glucose will the brain get?
91
10 seconds
how many seconds without blood flow before the brain loses consciousness?
92
impaired neural activity
what happens to the brain after 1-2 minutes without blood flow
93
irreversible brain damage
what happens to the brain after 4 minutes or longer of blood loss or stop of blood flow?

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