Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

anatomy lectures > olfactory and limbic systems > Flashcards

olfactory and limbic systems Flashcards

1
Q

olfactory sensory neurons

A
  • no circuitry or synapses in the epithelium
  • receptors have axons (thin, unmyelinated, slow) that project directly to the olfactory bulb
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

how often do receptors die and be replaced

A

every 60 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

can sensory cells regenerate

A

yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

where are first order neurons located

A

between receptors and olfactory bulbs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

second order neurons synapse with ? in ?

A

tuftal and mitral cells; olfactory glomerulus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

bipolar neurons

A

second order neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

olfactory nerve components

A

bipolar nerves with unmyelinated axons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

principal neurons of the olfactory bulb

A

mitral and tuftal cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

aromatic compounds recognize ?

A

particular receptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

aromatic compounds travel where ?

A

particular glomerulus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

glomerulus

A

basic processing component of the olfactory bulb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

polysynaptic structure of olfactory bulb function

A

ensuring conversion of specific olfactory impulses to the mitral and tuft cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

periglomerular and granular cell function

A

mediate local and lateral inhibition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

where is the olfactory tract located

A

in the olfactory sulcus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what does the olfactory tract contain

A

the axons of mitral and tufted cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

where does the olfactory tract run

A

to olfactory trigone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

second order olfactory nerves transmit info to ? via ?

A

olfactory stria; olfactory tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

olfactory tract projects via ? to ? on the base of the frontal/medial temporal lobe

A

stria; olfactory cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

largest olfactory stria

A

lateral olfactory stria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

lateral olfactory stria

A
  • to primary olfactory cortex (piriform cortex)/parahippocampal gyrus on temporal lobe
  • conscious awareness (recognition) of odor
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

uncinate fit

A
  • temporal lobe epilepsy
  • seizures with elaborate and multiple sensory, motor, and/or psychic components
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what precedes uncinate fits

A

hallucinations of disagreeable odors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

types of olfactory strias

A
  • lateral olfactory stra
  • medial olfactory stria
  • intermediate olfactory stria
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

medial olfactory stria

A
  • to septal area/lower, posterior part of the medial surface of the frontal lobe
  • olfactovisceral reflexes
25
Q

intermediate olfactory stria

A
  • olfactory tubercle
  • reward behavior
26
Q

anterior commissure function

A

connects two halves of the olfactory system (anterior to the columns of the fornix)

27
Q

what does the insula recieve

A

taste input from the medial part of vpm of thalamus (flavor)

28
Q

orbitofrontal cortex function

A

furthers conscious smell olfactory perception

29
Q

olfactory pathway

A
30
Q

how does the limbic system operate

A

influencing endocrine system and autonomic nervous system

31
Q

limbic system functions

A
  • control emotions and emotional responses
  • mood
  • motivation
  • pain and pleasure sensations
32
Q

limbic system links complex goal directed behavior to …

A

primitive, instinctive behavior, important for survival

33
Q

cortical areas of limbic system

A
  • septal area
  • cingulate gyrus
  • parahippocampal gyrus
34
Q

deeper structures of limbic system

A
  • hippocampal formation and fornix
  • amygdala
  • mammillary bodies
  • anterior nuclei of the thalamus
35
Q

hypothalamus

A
  • maintain homeostasis
  • stimulation produces behaviors seen in other limbic areas (rage, aggression, docile behaviors)
36
Q

thalamus

A
  • relays sensory information to limbic system
  • connects brainstem to cerebrum/relay center
37
Q

amygdala

A
  • emotion, reproduction, fear, aggression
  • modulation of autonomic and neuroendocrine systems
  • stimulation can produce rage
38
Q

hippocampus

A
  • memory conversion
  • associative learning and memory (memory acquisition and short term memory)
39
Q

limbic structures are interconnected by …

A
  • fornix
  • mammillothalamic tract
  • stria terminalis
  • cingulum
40
Q

hippocampus damage results in

A

amnesia

41
Q

amygdala lesion result

A

docile behavior

42
Q

kluver-bucy syndrome

A
  • ignore social conventions
  • bilateral lesions of the anterior temporal lobe
43
Q

how is the amygdala connected to the hypothalamus

A

stria terminalis

44
Q

what is the amygdala directly connected to

A

thalamus and neocortex

45
Q

septal area components

A
  • septal nucleus
  • septum pellucidum
  • small portion of neocortex
  • relief of fear, docile behavior, stress
46
Q

septum pellucim

A

thin membrane between 2 lateral ventricles

47
Q

septal area lesion result

A

rage and aggressive behavior

48
Q

what is the septal area connected to

A

hypothalamus and hippocampus (fornix)

49
Q

cingulate gyrus

A
  • overlies corpus callosum
  • control of emotional and visceral responses, aggressive behavior
50
Q

how does the cingulate gyrus connected with the hypothalamus

A

mammillothalamic tract

51
Q

what is the cingulate gyrus connected to

A

anterior nuclear group of the thalamus through thalamic radiations

52
Q

papez circuit

A
53
Q

how are papez circuit functions mediated

A

through hypothalamus and autonomic nervous system

54
Q

diseases related to the limbic system

A
  • acquired disorders
  • dementia
  • neuropsychiatric disorders
55
Q

acquired disorders (limbic system)

A
  • violence
  • suicidal behavior
  • agitation
  • mood swings
56
Q

dementia

A

degeneration of limbic system structures (may be genesis of other neurodegenerative disorders)

57
Q

neuropsychiatric disorders

A
  • anxiety
  • schizophrenia
  • psychopathic disorders
58
Q

olfactory nerve versus olfactory tract

A
  • olfactory bulb is a relay station for the transmission of the impulse coming from the olfactory nerve
  • from the olfactory bulb, impulses then travel through the olfactory tract
  • olfactory tract divides into the medial and lateral olfactory striae, then connects to the olfactory cortex

anatomy lectures (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions