Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Neuroscience > Week 4: Sensory Systems (limited pathway information) > Flashcards

Week 4: Sensory Systems (limited pathway information) Flashcards

1
Q

What is somatosensory?

A

Bodily sensations of touch, pain, temperature, vibration, and proprioception.

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

somatosensory information is received from sensory receptors in:

A 
skin
joints
ligaments
muscle 
fascia
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Free nerve endings are responsible for:

Do they have large receptor fields, small receptor fields or both?

A

temperature
pain
crude touch

They have large or small receptor fields.

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

Merkel cells are responsible for:

Do they have large receptor fields, small receptor fields or both?

A

shape and texture of light touch

small receptor fields

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

Meissner corpuscles are responsible for:

Do they have large receptor fields, small receptor fields or both?

A

motion detection and grip control of light touch

small receptor fields

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

Ruffini endings are responsible for:

Do they have large receptor fields, small receptor fields or both?

A
  • stretching of the skin (which supplies secondary info regarding proprioception)
  • vibration and pressure

Large receptor fields

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

Pacinian corpuscles are responsible for:

Do they have large receptor fields, small receptor fields or both?

A

vibration and pressure

large receptor fields

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

What is proprioception?

A

the sense of a joint/ limb position in space

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

What 3 things contribute to proprioception?

A
  • muscle spindles
  • Golgi tendon organs
  • joint receptors
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Muscle spindles can trigger what 2 responses?

A

muscle contraction and antagonist inhibition.

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

What fibers included in muscle spindles are responsible for stretching the muscle rather than contracting?

A

intrafusal fibers

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

Muscle spindle can be categorized by how ______ or how _______ they are stretched.

A

fast; far

synonymous with RATE and DEGREE

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

Muscle spindles are crucial to:

A

the myotatic (stretch) reflex

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

Golgi tendons are located:

A

near the muscle tendon junction

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

Golgi tendon organs monitors ________ within the tendons

A

tension

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

Golgi tendon organs can trigger 2 responses:

A

muscle relaxation (autogenic inhibition)
and
inhibit muscle spindles

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

What is the exception to the general responsibilities of golgi tendon organ?

A

can trigger contraction right before a muscle is passively stretched. This is crucial for proprioceptive neurotransmitter rehabilitation.

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

Joint receptors monitor:

A

stretch in synovial joints

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

Joint receptors send information to:

A

cerebellum and spinal reflex arcs

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

What are the other important receptors in joints and what are their functions?

A

Pacinian: AROM and compression
Ruffini: indicate end range and passive range of motion
Free nerve endings: pain from joint inflammation; non - noxious stress (pressure, temperature, vibration, etc.)

21
Q

What is the general pathway from the somatosensory neuron in the PNS?

A
  1. Distal axons (PNS): Mechanoreceptors & proprioceptors
  2. Dorsal and ventral rami: (dorsal does back, ventral does trunk and limbs)
  3. spinal nerve
    soma in dorsal root ganglion
  4. Proximal axon (CNS) Dorsal root
22
Q

What are dermatomes?

A

area of skin with sensory innervation by a single dorsal spinal root

23
Q

Cutaneous peripheral nerve supply an area of skin that is related to a:

A

peripheral nerve

24
Q

The anterolateral column is responsible for:

A

pain, temperature, pressure and crude touch

25
The dorsal column is responsible for:
light touch, proprioception and vibration
26
The medial leminiscal pathway conveys:
proprioception, vibration, and discriminative touch.
27
The anterolateral system conveys
pain, temperature, crude touch, pressure
28
The anterolateral system contains what 3 tracts:
spinothalamic tract spinoreticular tract spinomesencephalic tract
29
Discrimination (location, intensity) of pain, temperature, and crude touch are aspects of what tract in the anterolateral system?
spinothalamic tract
30
Emotional and arousal aspects of pain are aspects of which tract in the anterolateral system?
- spinoreticular tract
31
pain modulation is a part of what tract in the anterolateral system?
spinomesencephalic tract
32
What structure is a crucial relay structure for all afferent pathways traveling to the cortex?
The thalamus
33
What makes up the relay nuclei of the thalamus?
medial nuclear group lateral nucleus group anterior nuclear group
34
What makes up the internal medullary lamina?
intralaminar nuclei | multiple cortical projections`
35
The internal medullary lamina receives input from:
The RAS in the reticular formation.
36
The thalamic reticular nucleus contains ____________ integration and it projects to the:
thalamic; cortex
37
What are the 6 lateral nuclear groups in the thalamic nuclei?
- ventral posterior lateral nucleus (VPL) - ventral posteromedial nucleus (VPM) - ventral lateral nucleus (VL) - ventral anterior nucleus (VA) - Lateral geniculate nucleus (LGN) - Medial geniculate nucleus (MGN)
38
Ventral posterior lateral nucleus is involved in sending information from:
somatosensory of spinal chord to primary sensory cortex
39
Ventral posteromedial nucleus is involved in sending information from:
Somatosensory (CNS) to primary sensory cortex
40
Ventral lateral nucleus is involved in sending information from:
cerebellum and basal ganglia to primary motor cortex and association motor cortices
41
Ventral anterior nucleus is involved in sending information from:
cerebellum and basal ganglia to the primary motor cortex, association motor cortices and other frontal lobe structures.
42
Lateral geniculate nucleus is involved in sending information from:
vision to primary visual cortex
43
Medial geniculate nucleus is involved in sending information from:
auditory to primary auditory cortex
44
What nucleus is in the medial nuclear group?
the mediodorsal nucleus
45
The mediodorsal nucleus is involved in sending information from:
limbic and basal ganglia to the frontal cortex
46
What nucleus is in the anterior nuclear group?
Anterior Nucleus
47
Anterior nucleus is involved in sending information from:
mamillary body, hippocampus to cingulate gyrus
48
What cortices are involved in the integration of somatosensory?
Primary somatosensory cortex somatosensory association cortex heteromodal cortex

Neuroscience (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions