Brainscape's Knowledge GenomeTM

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


See full index

A&P > Sensory Pathways > Flashcards

Sensory Pathways Flashcards

1
Q

Sensory receptors monitor what?

A

Monitor internal and external environment

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

Visceral sensory

A

Goes to brain stem and diencephalon

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

Somatic sensory

A

Goes to post central gyrus or appropriate cerebral hemisphere

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

Post central gyrus

A

Receives general senses

Temp, pain, touch, pressure, vibration, and body position

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

Sensation

A

Is when action potential arrives

The arrival of information

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

Perception

A

Is conscious awareness

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

Receptive fields

A

Monitored by receptor cell
Larger field- poorer ability to localize stimuli
Smaller field- more precise localization

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

Two types of receptors

A

Tonic receptors

Phasic receptors

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

Tonic receptors

A

Always active, show little peripheral adaptation, and are slow adapting
Ex. Pain

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

Phasic receptors

A

Not active, fast adapting

Ex. Smell

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

Adaptation

A

Receptor becomes numb to stimuli

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

Sensory receptor classification

A

Exteroceptors
Proprioceptors
Interoceptors

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

General sensory receptors

A

Nociceptors-pain
Thermoreceptors- temp
Mechanoreceptors- physical distortion
Chemoreceptors- chemical concentration

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

Nociceptors

A

Have free nerve endings and large receptive fields

Sensitive to temp, chemicals, and mechanical damage.

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

Type A fibers

A

Carry painful sensation Myelinated, fast pain, and conscious

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

Type C fibers

A

Carry painful sensations, slow pain, you are aware but only have general idea of location

17
Q

Thermoreptors

Location

A

Free nerve endings

Located in dermis, skeletal muscle, liver, and hypothalamus

18
Q

Mechanoreceptors

A

Sensitive to distortion of plasma membrane

19
Q

3 types of mechanoreceptors

A

Tactile- sensation for touch, pressure, vibration
Barorecptors- detect pressure in Blood vessels
Proprioceptors- monitor position of joints, tension in tendons and ligaments, muscle contraction.

20
Q

First order neuron

A

Delivers sensation to CNS

Located in dorsal root ganglion

21
Q

Second order neuron

A

Interneuron located in brain stem or spinal cord

22
Q

Third order neuron

A

Located in thalamus

Only synapses if sensation reaches our awareness

23
Q

Somatic sensory pathways

A

Spinothalamic pathway
Posterior column pathway
Spinocerebellar pathway

24
Q

Spinothalamic pathway

A

Provides conscious sensation poorly localized (crude) touch pressure pain and temp
Ascending

25
Q

Posterior column pathway

A

Carriers sensations of highly localized (fine) touch, pressure, vibration, and proprioception

26
Q

Spinocerebellar pathway

A

Sends info to cerebellum

Proprioceptive- positions of skeletal muscles, tendons, and joints

27
Q

2 spinal tracts of

Posterior Column pathway

A

Fasciculus gracilis— inferior part of body

Fasciculus cuneatus—superior part of the body

28
Q

Nerves that carry visceral sensory info

A

Cranial nerves 5,7,9,10

Delivered to solitary nucleus

29
Q

Somatic motor pathways always involve 2 motor neurons

A

Upper motor neuron—pre central gyrus

Lower motor neuron—anterior horn opposite side in brain stem or spinal cord

30
Q

Chemoreceptors

A

Located in carotid bodies and aortic bodies

Monitor ph of CO2, hydrogen ions, and oxygen

31
Q

Corticospinal pathway

A

Begins at pyramidal cells in pre central gyrus and descends down spinal cord
Conscious

32
Q

Corticobular

A

Synapse on motor neuron in cranial nerves 3,4,5,6,7,9,11,12
Move eye, jaw, face, neck, pharynx
Cross at brain stem and end on opposite side

33
Q

3 types of medial pathway

A

Vestibulospinal
Tectospinal
Reticulospinal

34
Q

Lateral pathway

A

Control muscle tone and precise movement in distal limbs
Midbrain cross then descend to cervical spinal cord
Ex rubrospinal tract

A&P (17 decks)

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