Nervous Flashcards

1
Q
  1. Reception of stimulus
  2. Transmission of impulses
  3. Coordination of body activities
A

Nervous System

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2
Q

Composed of brain and spinal cord
* Acts as body’s control center, coordinates body’s activities

A

Central Nervous System

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3
Q

Impulses travel through
the neurons in your body
to reach the brain

A

Central Nervous System

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4
Q

Composed of cranial nerves from the brain and spinal nerves from the spinal cord

A

Peripheral Nervous System

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5
Q

Similar to telephone wires that connect all of our houses in the community

A

Peripheral Nervous System

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6
Q

Made up of all the nerves that carry messages to and from the central nervous system.

A

Peripheral Nervous System

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7
Q

Composed of sympathetic and parasympathetic chains of ganglia

A

Autonomic Nervous System

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8
Q

Relay information from central nervous system to organs
* Involuntary

A

Autonomic Nervous System

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9
Q

controls in times of stress, such as the flight or fight response

A

Sympathetic Nervous System

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10
Q

controls body in times of rest

A

Parasympathetic Nervous System

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11
Q

Relay information between
skin, skeletal
muscles and central nervous system

A

Somatic Nervous System

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12
Q

You consciously control this pathway by deciding whether or not to move muscles(except reflexes)

A

Somatic Nervous System

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13
Q

Reflexes: Automatic response to stimulus

A

Somatic Nervous System

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14
Q

composed of two hemispheres connected by corpus callosum

A

TELENCEPHALON OR CEREBRAL HEMISPHERES

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15
Q

controls right side of body
- associated with math, analytic, and speech

A

Left hemisphere

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16
Q

controls left side of body
- associated with music, art, abstract ideas

A

Right hemisphere

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17
Q

it is the embryonic structure from which the cerebrum develops prenatally- Controls conscious activities, intelligence, memory, language, muscles
- cavity in each hemisphere are the first and second ventricles

A

TELENCEPHALON OR CEREBRAL HEMISPHERES

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18
Q

are cavities in CNS that contain fluid

A

Ventricles

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19
Q

for abstract thinking, sense of humor, and uniqueness of personality;
contraction of skeletal muscles and synchronization of muscular movement

A

Frontal Lobes

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20
Q

translate nerve impulse into sensations, provides appreciation of size, texture, and weight; sense of taste

A

Parietal lobes

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21
Q

translate nerve impulse into sensation of sound; control behavior patterns; sense of smell

A

Temporal Lobes

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22
Q

translates nerves impulses into sight; provides appreciation of size, shapes and color

A

Occipital Areas

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23
Q

Mainly in left hemisphere

A

Speech

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24
Q

parietal lobe
- where words are heard and comprehended

A

Sensory speech (Wernicke’s area)

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25
Q

frontal lobe
- where words are formulated

A

Motor speech (Broca’s area)

26
Q

unpaired division of the forebrain
- cavity inside is the third ventricle
- consists of Thalamus and Hypothalamus

A

DIENCEPHALON OR TWIXTBRAIN

27
Q

paired structure of gray matter below the corpus callosum which is a relay center for all sensory impulses; functionally related to all motor centers
* Characteristics:
largest portion of diencephalon

A

Thalamus

28
Q

influences moods and detects pain; relay motor and sensory signals to cerebral cortex

A

Thalamus

29
Q

forms the floor of the third ventricle
* regulates the peripheral nervous system discharges which accompanies behavior and emotional
expression manufactures hormones of the neurohypophyses

A

Hypothalamus

30
Q

controls secretion of pituitary gland and is connected to it by infundibulum* Function: - controls homeostasis, body temp, thirst, hunger, fear, rage, sexual emotions

A

Hypothalamus

31
Q
  • found between the forebrain and the hindbrain- contains four nuclear masses collectively known as the corpora quadri-gemina
A

MESENCEPHALON OR MIDBRAIN

32
Q

involved in visual reflexes

A

superior colliculi

33
Q

associated with hearing- contains reflex centers from cranial nerves III (occulomotor) and IV (trochlear)

A

inferior colliculi

34
Q

cavity in mesencephalon is called

A

Mesocoel

35
Q

second largest part of the human brain which exerts synergic control over skeletal muscles resulting in coordinated skeletal muscle contraction to produce smooth, steady, and precise movements
* Location:
below cerebrum

A

METENCEPHALON OR CEREBELLUM

36
Q
  • Characteristics: - means little brain
A

METENCEPHALON OR CEREBELLUM

37
Q
  • Functions: controls balance, muscletone,
    coordination of fine motor movement
A

METENCEPHALON OR CEREBELLUM

38
Q

cavity in metencephalon is the

A

Metacoel

39
Q

Location: - most posterior portion of the hindbrain* Function: - regulates heart rate, blood vessel diameter, breathing, swallowing, vomiting, hiccups, coughing, sneezing, balance, and conducts impulses between the cord and the brain (sensory and motor)* its cavity is the fourth ventricle

A

MYELENCEPHALON OR MEDULLAOBLONGATA

40
Q

Location:
above medulla, bridge between cerebrum and cerebellum
– Function:
breathing, chewing, salivation, swallowing

A

Pons

41
Q

– Location:
above pons – Function:
coordinated eye movement, pupil diameter, turning head toward noise

A

Midbrain

42
Q
  • membranous coverings or protective wrapping around brain and spinal cord consisting of three layers
A

MENINGES

43
Q
  • infection of
    meninges
    (bacterial or
    viral)
A

Meningitis

44
Q

outer layer of white fibrous tissue
- thickest layer

A

dura mater

45
Q

middle layer

A

arachnoid membrane

46
Q

innermost layer adhering to the surface of the brain and spinal cord and containing blood vessels

A

pia mater

47
Q
  • where cerebrospinal fluid sits
A

Subarachnoid space

48
Q

Fluid that bathes the brain and spinal cord* Provides a protective cushion around the CNS* Produced in choroid plexus of brain

A

CEREBROSPINAL FLUID

49
Q

plexus of cells that produces CSF

A

choroid plexus

50
Q

posterior continuation of the brain located in the spinal cavity
- Protected by vertebral column
- If damaged paralysis can occur

A

SPINAL CORD

51
Q

conducts impulses to the brain through its sensory tracts; contains reflex centers for all spinal cord reflexes

A

SPINAL CORD

52
Q

nerves originating from the brain (12pairs in man)

A

CRANIAL NERVES

53
Q

nerves originating from the spinal cord(31pairsinman) - each nerve is attached to the cord by short roots

A

SPINAL NERVES

54
Q

branches of spinal nerves form plexus or intricate network of fibers from which the nerves supplying various parts of the skin, mucosa, and skeletal
muscles emerge
- all spinal nerves are mixed nerves

A

SPINAL NERVES

55
Q

-skin, mucosa, ear, eye
-Changes in external
environment (ex. Heat, cold, pressures)
-initiate reflexes, sensation of many kinds(ex. heat, cold, pain, vision)

A

Exteroreceptors

56
Q

-Viscera
-Changes in internal
environment
(ex. pressure)
initiate reflexes, initiate sensation of many kinds(ex. hunger, sex, nausea, pressure)

A

Visceroreceptors
(interoreceptor)

57
Q

-Muscles, tendons,
joints, semi-circular
canal of inner ear
-pressure changes
-initiate reflexes, initiate muscle sense, or sense of position and movement of parts, also called kinesthesia

A

Proprioreceptors

58
Q

taste buds in the tongue innervated by the facial and glossopharyngeal nerves- responds to chemicals; sweet at tongue tip; sour and salt at tip and sides; bitter at back

A

Taste

59
Q

receptors in the epithelium of the nasal mucosa
-odors sensed as chemicals interact with receptor sites on sensory
-hair of olfactory cells

A

OLFACTION

60
Q

eyeball consists of three coats: outer sclera, and cornea, middle choroid, ciliary body, and iris, and inner retina
- with anterior cavity containing a liquid aqueous humor and posterior cavity containing a gel-like vitreous humor

A

SIGHT

61
Q

external ear consisting of the pinna, ear opening and external auditory canal
- middle ear separated from the external ear by the tympanic membrane; contains the ear ossicles (Malleus, Incus, and Stapes) and opening from the eustachian tubes- inner ear (or labyrinth) composed of body vestibule, semicircular canals and cochlea(containing the organ of Corti), the hearing sense organ innervated by the cranial nerve VIII.

A

HEARING