Chapter 15 - Integrative Functions Notes Flashcards Preview

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The _______ pathways are the ________ pathways.

Sensory
Afferent

1

Where do the sensory pathways (afferent) travel

To the thalamus then to the sensory cortex of the brain

2

What are the pathways carried on

Tracts

3

How are tracts named

According to the origin and destination of the axons within tract

4

What are sensory tracts

Body's interface between internal and external environment

5

Sensory pathways involve a

Sensory receptor

6

What does the sensory receptor do

Receives info and passes it to spinal cord to be sent to cortex

7

What are general senses

Sensations of temperature, pain, touch, pressure, vibration, and proprioception

8

How many types of receptors

4

9

What are the receptors

Nociceptors
Thermoreceptors
Mechanoeceptors
Chemoreceptors

10

Receptor that responds to tissue damage perceived as pain

Nociceptors

11

Receptor that responds to changes in temps

Thermoreceptor

12

Receptor that is stimulated by physical distortion, contact, or pressure

Mechanoreceptor

13

Receptor that responds to changes in chemistry of body fluids

Chemoceptors

14

As sensory info travels to the CNS the info passes through:

Specific order of synapses

15

The ________ delivers the info to the CNS.

First order neuron

16

Where is the first order neuron located

Dorsal root ganglion (DRG)

17

The _______ is an interneuron.

Second order neuron

18

Where is the second order neuron found

Spinal cord or brain stem

19

The ______ takes the info from the _______ and carries it to the cortex for conscious awareness.

Third order neuron
Second order neuron/interneuron

20

Where are third order neurons located

Thalamus

21

There are how many major sensory pathways in the NS

3

22

What are the sensory pathways

Dorsal column
Spinothalamic
Spinocerebellar

23

Which pathway carries sensations of fine touch, pressure, vibration, and joint position sense.

Dorsal column

24

The tracts of the dorsal column are

Fasciculus gracilis
Cuneatus

25

The _____ carries sensation from lower body to the cord

Gracilis

26

The _______ carries info from the upper half of the body to the cord

Cuneatus

27

The _____ pathway provides conscious sensations of touch, pressure, pain, and temp

Spinothalamic

28

Two subdivision of spinothalamic pathway

Anterior
Lateral

29

The _______ carries touch and pressure to the opposite sensory cortex

Anterior spinothalamic tract