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BIO 141 Lab > The Nervous System > Flashcards

The Nervous System Flashcards

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Biology 101 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
Q

The ventricles are:

A

Paired C-shaped lateral ventricles

26
Q

Cerebral hemispheres form the superior part of th brain and make up ____% of its mass

A

83%

27
Q

ridges of brain

A

gyri

28
Q

shallow grooves

A

sulci

29
Q

Deep groove in the brain

A

fissures

30
Q

Deep sulci divide the hemisphere into five lobes:

A
  • Frontal
  • Parietal
  • Temporal
  • Occipital
  • Insula
31
Q

Separates frontal and parietal lobes

A

Central Sulcus

32
Q

Separates the parietal and occipital lobes

A

Parieto-occipital sulcus

33
Q

Separates the parietal and temporal lobes

A

Lateral Sulcus

34
Q

The pre central and post central gyri border

A

the central sulcus

35
Q
  • 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

A

Cerebral White Matter

36
Q

-Carry motor impulses from brain to muscles used in chewing, swallowing, speaking, and forming facial expressions

A

Special Somatic Efferent Fibers

37
Q

Carry sensory impulses to brain from olfactory and taste receptors

A

Special Visceral Afferent Fibers

38
Q

Carry sensory impulses to brain from receptors of sight, hearing, and equillibrium

A

Special Somatic Afferent Fibers

39
Q

List the nerves in descending order:

A
  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
Q

Olfactory

A
  • Sensory

- Fibers transmit impulses associated with smell

41
Q

Optic

A
  • Sensory

- Fibers transmit impulses associated with vision

42
Q

Oculomotor

A
  • Motor

- Move the eyes

43
Q

Trochlear

A
  • Motor

- Motor impulses to the muscles that move the eye

44
Q

Trigeminal

A

-Mixed

  • Sensory- upper teeth
  • Motor- muscles of mastication
45
Q

Abducens

A
  • Motor

- Muscles that move the eyes

46
Q

Facial

A

-Mixed

  • Sensory from taste receptors
  • Motor to muscles of facial expression
47
Q

Vestibulocochlear

A
  • Sensory

- Sensory from hearing receptors

48
Q

Glossopharyngeal

A

-Mixed

  • Sensory from tongue
  • Motor to salivary glands
49
Q

Vagus

A

-Mixed

  • Sensory from viscera of thorax
  • Motor to viscera of thorax
50
Q

Accessory

A
  • Motor

- Motor to muscles of neck and back

51
Q

Hypoglossal

A
  • Motor

- Motor to muscles of tongue

BIO 141 Lab (10 decks)

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