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anat 316 > nervous system > Flashcards

nervous system Flashcards

1
Q

what is the approx mass of the nervous system?

A

about 3% of total bodyweight

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2
Q

what are the two cell types in the nervous system

A

neurons and neuroglia

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3
Q

where do cranial nerves come from?

A

these nerves comes from the brain

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4
Q

where do spinal nerves come from?

A

these nerves come off the spine

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5
Q

what do ganglia of the nervous system do?

A

they form connections and circuits with different parts of the brain

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6
Q

what do sensory receptors of the nervous system do?

A

detect/monitor changes in the environment and convert these changes into electrical signals that can be processes by the nervous system

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7
Q

what is the CNS made up of?

A

brain and spinal cord

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8
Q

what is the function of the CNS

A

receiving, processing, and responding to sensory info

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9
Q

what is the PNS made up of?

A

cranial nerves, spinal nerves, ganglia, and sensory receptors

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10
Q

what is the function of the PNS

A

sends info from dif areas of your body back to the brain and carrying out commands from brain to various parts of the body

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11
Q

define nerve

A

bundle of axons (nerve cell fibers) located outside the brain and spinal cord

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12
Q

what is a ganglia

A

cluster of neuron cell bodies

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13
Q

where is are ganglia located?

A

outside the CNS

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14
Q

what is the sensory function of the nervous system

A

the sensory function of the nervous system is the input of the nervous system. They detect internal and external stimuli and then transmit this information to the CNS

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15
Q

what is the integrative function of the nervous system

A

the integrative function of the nervous system is the control of the nervous system. It analyzes sensory info and perceives stimuli. It occurs in the CNS

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16
Q

What is the motor function of the nervous system

A

the motor function of the nervous system is the output of the nervous system. It is the motor/efferent neurons of the nervous system that responds to integration. It initiates actions in effector organs

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17
Q

What is the PNS made up of?

A

Somatic nervous sytem and Autonomic Nervus system

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18
Q

function of somatic sensory neurons

A

convey and input info from sensory receptors to the CNS

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19
Q

function of somatic motor neurons

A

convey info from CNS to skeletal muscles and output info from CNS for muscular contraction

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20
Q

what is the overall function of the somatic nervous system

A

It regulates voluntary control of skeletal muscles

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21
Q

what are the two divisions of the autonomic nervous system?

A

sympathetic nervous system and parasympathetic nervous system

22
Q

what is the function of the sympathetic nervous system

A

it acts to turn on the fight or flight response to stimuli

23
Q

what is the function of the parasympathetic nervous system?

A

it acts to turn on the rest or digest response

24
Q

define neurons

A

basic structural and functional units of the nervous system. They form complex processing networks to transfer/process info

25
Q

define neuroglia

A

small units that support, nourish, and protect neurons.

26
Q

cerebrum

A

largest and most anterior part of the brain, separated by longitudinal fissures. Functions to initiate and manage conscious thoughts and actions

27
Q

what are the components of the brain stem?

A

the midbrain, pons, medulla

28
Q

what are the components of the diencephalon?

A

epithalamus, thalamus, hypothalamus

29
Q

what does grey matter make up?

A

the cerebral cortex - outer layer of the brain.

30
Q

what does the corpus callosum do?

A

connects right and left hemispheres

31
Q

function of the frontal lobe

A

frontal lobe is in charge of executive functioning

32
Q

function of parietal lobe

A

responding to stimuli from the environment and proprioception

33
Q

function of occipital lobe

A

vision

34
Q

function of temporal lobe

A

auditory processing and speaking/verbal responses

35
Q

what are the 5 different lobes of the brain

A

insular lobe, frontal lobe, parietal lobe, temporal lobe, and occipital lobe

36
Q

what is in the anterior fossa?

A

the frontal lobe

37
Q

what is in the middle fossa

A

temporal lobe

38
Q

what is in the posterior fossa

A

brainstem and cerebellum

39
Q

what does the central sulcus divide?

A

frontal and parietal lobes

40
Q

what does the parieto-occipital sulcus divide?

A

parietal and occipital lobe

41
Q

what does the lateral sulcus divide?

A

frontal and temporal lobe

42
Q

what is the function of the cerebellum?

A

muscle control (ie balance and movement) as well as language processing and memory

43
Q

what are the cerebellum features?

A

folia (grey matter) and arbor vitae (white matter)

44
Q

cerebellum function

A

coordinate voluntary movement and regulate posture and balance

45
Q

cerebellar peduncles function

A

information highway in the cerebellum

46
Q

cerebellum vermis function

A

connects hemispheres of cerebellum

47
Q

falx cerebri function

A

separates hemispheres and provides channels, known as dural sinuses, for blood and cerebral spinal fluid to drain.

48
Q

tentorium cerebelli function

A

restricts movement of cerebrum and cerebellum

49
Q

falx cerebelli function

A

separates hemispheres of the cerebellum and provides channels, known as dural sinuses, for blood and cerebral spinal fluid to drain.

50
Q

cerebellum arbor vitae function

A

brings sensory and motor info to and from cerebellum

anat 316 (22 decks)

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