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BIO 141 Lab > The Nervous System > Flashcards

The Nervous System Flashcards

1
Q

Central Nervous System

A
  • Brain

- Spinal Cord

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2
Q

Peripheral Nervous System

A
  • Cranial Nerves

- Spinal Nerves

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3
Q

Picks up sensory information and delivers it to the CNS

A

Sensory Division

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4
Q

Carries information to muscles and glands

A

Motor Division

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5
Q

Carries information to skeletal muscles

A

Somatic

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6
Q

Carries information to smooth muscle, cardiac muscle, and glands

A

Automatic

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7
Q

Nerve impulses pass form neuron to neuron at:

A

synapses

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8
Q
  • Membranes surrounding CNS
  • Protect CNS
  • Three layers

*dura matter, arachnoid matter, pia matter

A

Meninges

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9
Q

Outer; tough

A

Dura Matter

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10
Q

Thin; weblike

A

Arachnoid Matter

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11
Q

Inner, very thin

A

Pia Matter

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12
Q

Subarachnoid space is made of

A

CSF

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13
Q

Directly touches spinal cord

A

Pia Matter

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14
Q
  • Interconnected cavities within cerebral hemispheres and brain stem
  • Continuous with central canal of spinal cord
  • Filled with cerebrospinal fluid (CSF)
A

Ventricles

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15
Q
  • Slender column of nervous tissue continuous with brain
  • extends downward through vertebral canal
  • Begins at level of foramen magnum and terminates near first and second lumbar
A

Spinal Cord

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16
Q

Spinal cord begins at level of _____ and terminates near first and second lumbar

A

foramen magnum

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17
Q

Automatic subconscious responses to stimuli within or outside the body

A

Reflexes

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18
Q

What is an example of reflex behavior?

A

Knee-jerk reflex

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19
Q
  • Simple monosynaptic reflex

- Helps maintain an upright posture

A

Reflex Behavior

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20
Q

Example of reflex that prevents or damages tissue damage

A

Withdrawl Reflex

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21
Q

Conduct sensory impulses to the brain

A

Ascending Tracts

22
Q

Tracts conduct motor impulses from the brain to motor neurons reaching muscles and glands

A

Descending Tracts

23
Q

The third ventricle is found in the:

A

diencephalon

24
Q

The fourth ventricle is found in the:

A

hindbrain dorsal to the puns

25
The ventricles are:
Paired C-shaped lateral ventricles
26
Cerebral hemispheres form the superior part of th brain and make up ____% of its mass
83%
27
ridges of brain
gyri
28
shallow grooves
sulci
29
Deep groove in the brain
fissures
30
Deep sulci divide the hemisphere into five lobes:
- Frontal - Parietal - Temporal - Occipital - Insula
31
Separates frontal and parietal lobes
Central Sulcus
32
Separates the parietal and occipital lobes
Parieto-occipital sulcus
33
Separates the parietal and temporal lobes
Lateral Sulcus
34
The pre central and post central gyri border
the central sulcus
35
- Consists of deep myelinated fibers and their tracts | - Is responsible for communication between the cerebral cortex and lower CNS center, and areas of the cerebellum
Cerebral White Matter
36
-Carry motor impulses from brain to muscles used in chewing, swallowing, speaking, and forming facial expressions
Special Somatic Efferent Fibers
37
Carry sensory impulses to brain from olfactory and taste receptors
Special Visceral Afferent Fibers
38
Carry sensory impulses to brain from receptors of sight, hearing, and equillibrium
Special Somatic Afferent Fibers
39
List the nerves in descending order:
1. Olfactory 2. Optic 3. Occulomotor 4. Trochlear 5. Trigeminal 6. Abducens 7. Facial 8. Vestibulocochlear 9. Glossopharyngeal 10. Vagus 11. Accessory 12. Hypoglossal
40
Olfactory
- Sensory | - Fibers transmit impulses associated with smell
41
Optic
- Sensory | - Fibers transmit impulses associated with vision
42
Oculomotor
- Motor | - Move the eyes
43
Trochlear
- Motor | - Motor impulses to the muscles that move the eye
44
Trigeminal
-Mixed - Sensory- upper teeth - Motor- muscles of mastication
45
Abducens
- Motor | - Muscles that move the eyes
46
Facial
-Mixed - Sensory from taste receptors - Motor to muscles of facial expression
47
Vestibulocochlear
- Sensory | - Sensory from hearing receptors
48
Glossopharyngeal
-Mixed - Sensory from tongue - Motor to salivary glands
49
Vagus
-Mixed - Sensory from viscera of thorax - Motor to viscera of thorax
50
Accessory
- Motor | - Motor to muscles of neck and back
51
Hypoglossal
- Motor | - Motor to muscles of tongue

BIO 141 Lab (10 decks)

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