Peripheral Nervous System 1 Flashcards
Consciously interpreting the world around you using your sensory system is known as?
Perception
Interpretation can either go the __________ or ________
A) Spinal cord
Or
B) Brain stem and upwards
The energy form of stimulus is called
Modality
Every receptor has its own modality (energy form)
Yes or No
Yes
What is the energy form converted into?
It’s converted into Action potential
Touch receptors will have __________ as it’s energy form (modality)
Touch
When light photons are converted into sensory modality, it’s called
Transduction
The change from one modality to modality is called
Transduction
The conversion of one energy form to another energy form is called
Transduction
Light made into an image by the eye is what type of transduction
Visual transduction
How does the conversion happen/how is the message produce?
It’s produces thru action potential, which is how they get to the CNS.
Action potential can take 2 distinct forms of generation?
- Receptor potential
- Generator potential
What’s helps to avoid wastage of energy?
Receptor adaptation
The receptor adaptation can either be ________ or _________z
Slow or rapid
2 major types of receptor adaptation?
- Tonic adaptation
- Phasic adaptation
What type of adaptation fires immediately and then slowly adapt to maintain homeostasis?
Tonic Adaptation
What type of adaptation is seen in muscle & joint receptor and pressure receptors?
Tonic Adaptation
What type of adaptation is fast and rapid?
Phasic adaptation
The type of adaptation where homeostasis is not disturbed is called?
Phasic adaptation
Touch receptors/smell receptor/tactile responses/olfactory receptors are all examples of what kind of adaptation?
Phasic adaptation
The adaptation working to maintain homeostasis is
Tonic Adaptation
What’s always follow a pathway?
Receptors
Which neuron is the first neuron in the somatosensory pathway?
Afferent Neurons
Which is the first order Neurons?
Afferent Neurons
There are 2 places where a pain reception can stop, what are they?
@ the spinal cord
Or
@ the Brain stem
What forms the starting point
Receptor
Pathway is also known as
Labeled lines
Each receptor have a unique labelled line, True or False
True
Labelled line is also known as
Chain of neuron
Stimulus - ______1_______ - Afferent (first order Neurons) - _____2_____ - 2nd order Neurons - ______3_______ - high cortex (3rd order neuron)
- Receptors
- Brain stem/spinal cord
- Thalamus
Sensory neuron located either in the spinal cord or the brain stem(medulla oblongata)
Second order sensory neuron
Sensory neuron located on the thalamus?
Third order sensory neuron
Which sensory neuron synapses eith the higher cortex?
Third order sensory neuron
Where are all the sensations refined?
Thalamus
Does all receptors have the feature named Acuity? Yes or No
Yes
The discriminative ability of good and bad is refered to as
Acuity
Acuity is influenced by 2 major concepts?
- Receptive field size
- Lateral inhibition
What is majorly influenced by field size and lateral inhibition?
Acuity
Fields that are served by 2 different neurons is
2 points reception
One big field and has one afferent Neuron is
One point reception
Field size can either be ______ or _____
One point or 2 points receptions.
What ensures that CNS is not crowded with all the reception but takes up only what is useful?
Acuity
The eye receptor uses ______________ to form borders of images which help to sharpen images.
Lateral inhibition
The ear receptor uses this to sift through all the noise and concentrate and sharpen the particular sound its aiming for..
Lateral inhibition
Receptive field size and lateral inhibition majorly influence what?
Acuity
