Flashcards in Lecture 28: Somatic Sensory Nervous System Deck (15)
Somatic = ?
Autonomic = ?
Somatic effectors = _____ muscle.
Autonomic effectors = what type of muscles?
- Smooth, Cardiac
Where is the cell body located in sensory neurons?
- In the root ganglia
Sensory receptors are ____. This is separate from the neurons that bring information in to the CNS. These are highly _____ to a ______ stimulus.
What 4 types of information describe a sensory stimulus:
Type of sensory receptor activated
Frequency of action potential firing in afferent neuron
Duration of action potential firing in afferent neuron
Location of sensory receptor(s) activated, 'mapped' in brain
Where are the length receptors?
- In the muscle spindles
Where are the tension receptors?
- In the tendons
What are some examples of touch modality?
- Receptors at the end of hair bulb
- Receptive field
- Neuron 1 = 1
- Neuron 2 = Area 2
- Neuron 3 = Area 3
For touch and posture information travels via which pathway? How many neurons are in the relay?
- Medial Lemniscal (Dorsal Column) Pathway
Areas of cortex respond to areas of _____. Densely innervated areas
Pain is sensed by free nerve endings. Fast pain has a _____ receptive field whereas slow pain has a _____ receptive field.