Peripheral Nervous System

This system of Nervous system puts your brain in touch w/ the physical environment, and allows it to respond

Peripheral Nervous System

It spy on the world for the central nervous system to process and interpret and each type responds to different stimuli

Sensory Nerve Receptors

It respond to changes in temperature

Thermoreceptor

React to light

Photoreceptor

Pay attention to chemicals

Chemoreceptors

It respond to pressure, pain, and vibration

Mechanoreceptors

It fire only to indicate pain

nociceptors

This sensation helps protect us from ourselves, and from the outside world

pain

What part of peripheral nervous system is active when it receives the stimulus of pain, travelling toward the CNS

Sensory or Afferent Division

Stimulus of pain activated an action potential in a neuron in spinal cord and there, the action potential reaches an ____

Integration Center

Once the integration center in spinal cord interprets the signal, it transmit the message to motor neurons, which sends an action potential back down to your leg, where it reaches an ___

effector +

Any structure that receives and reacts to a motor neuron’s signal (muscle or gland)

effector -

The handling of motor action in integration center after it recevied the stimulus of pain, what part of peripheral nervous system takes place?

Motor (Efferent) Division

Immediate actions that can either be innate or learned but don’t need much conscious processing in the brain

Reflex

super fast motor response to a startling stimulus

innate or intrinsic reflex action

Where is the processing for stimulus of pain so that the control of muscles can be initiated before the pain is perceived by the brain

Spinal Cord

This type of reflex com from experience

Learned or acquired reflexes

It stimulate some muscles while inhibiting others

reflex arc

located in muscles that senses stretching.

Muscle & Tendon Spindles +

A muscle that is overstretched can be injured, so if it is triggered by an overstretch they generate a reflex arc that contracts the muscle to keep it from stretching together

Muscle & Tendon Spindle =

When your spinal cord sent impulse down the motor neuron to lift your knee away from object that created feeling of pain, the spinal cord simultaneously also sent signals to what part of brain that splits the information so that it can be processed by another part of the brain

Thalamus

This is where thalamus sent the action potential originated from the foot, that identifies and localizes the pain

Somatosensory Cortex

This is also where thalamus sent the action potential originated from the foot, that registers EMOTIONAL suffering

Limbic System

This is also where thalamus sent the action potential originated from the foot, making sense of what happened what does the object that created the pain was doing in there

Frontal Lobe

what step in reflex arc occurs when the body is subjected to a change in environment where it induced a stimulus of distinct feeling of discomfort - sharp metal piercing your skin.

1st Step

what step in reflex arc occurs where your peripheral nervous system’s mechanoreceptors and nociceptors provide base sensation, that opens your mechanical gated channel due to physical stretching and ligand gated channel due to neurotransmitter Histamine being released as the tissue is destroyed by piercing, and neurotransmitter binds to it. Once these gated channels open, it causes influx of Na+ and creates depolarization that surges upward as an action potential to other neuron

2nd step

what step in reflex arc occurs where your neurons pass the action potential originating piercing on your foot from a neuron to axon, and to axon terminal whilst being transformed from electrical synapse to chemical synapse, after being passed down from synaptic cleft as a concerted neurotransmitter from being an electrical impulse down to another neuron, thus the neurotransmitter released from presynaptic neuron will be transformed again into electric synapse, until it reaches the spinal cord where the pain signal triggered an action potential in a neuron in the spinal cord, an integration center, that will decode the signal

3rd Step

what step in reflex arc occurs once the integration center interprets the signal, it transmits the message to motor neurons which sends an action potential back down your leg which is an effector

4th step