Lecture 28: Somatic Sensory Nervous System Flashcards Preview

HUBS 191💃✨ > Lecture 28: Somatic Sensory Nervous System > Flashcards

Flashcards in Lecture 28: Somatic Sensory Nervous System Deck (15):
1

Somatic = ?

- Voluntary

2

Autonomic = ?

- Involuntary

3

Somatic effectors = _____ muscle.

- Skeletal

4

Autonomic effectors = what type of muscles?

- Smooth, Cardiac

5

Where is the cell body located in sensory neurons?

- In the root ganglia

6

Sensory receptors are ____. This is separate from the neurons that bring information in to the CNS. These are highly _____ to a ______ stimulus.

- Specialised
- Sensitive
- Particular

7

What 4 types of information describe a sensory stimulus:

- Modality
Type of sensory receptor activated
- Intensity
Frequency of action potential firing in afferent neuron
- Duration
Duration of action potential firing in afferent neuron
- Location
Location of sensory receptor(s) activated, 'mapped' in brain

8

Where are the length receptors?

- In the muscle spindles

9

Where are the tension receptors?

- In the tendons

10

What are some examples of touch modality?

- Receptors at the end of hair bulb

11

Stimulus location?

- Receptive field
- Neuron 1 = 1
- Neuron 2 = Area 2
- Neuron 3 = Area 3

12

For touch and posture information travels via which pathway? How many neurons are in the relay?

- Medial Lemniscal (Dorsal Column) Pathway
- Three

13

Areas of cortex respond to areas of _____. Densely innervated areas

- Body

14

Pain is sensed by free nerve endings. Fast pain has a _____ receptive field whereas slow pain has a _____ receptive field.

- Small
- Large

15

The afferent pathway for pain is called the...

- Lateral spinothalamic pathway
- Across and up