Peripheral Nervous System (PNS) functions -️️1) sensory info to CNS
2) motor info to periphery
Sensory receptord do what? -️️detect change and trigger nerve impulse (AP) to be sent to the
CNS
Sensation -️️awareness of stimuli
Perception -️️interpretation of the meaning of the s...
NURS 1002 - Chapter 13 (PNS)-Questions with Correct Answers/
Verified/ latest Update (2024/2025)
Peripheral Nervous System (PNS) functions - ✔️✔️1) sensory info to CNS
2) motor info to periphery
Sensory receptord do what? - ✔️✔️detect change and trigger nerve impulse (AP) to be sent to the
CNS
Sensation - ✔️✔️awareness of stimuli
Perception - ✔️✔️interpretation of the meaning of the stimulus
Classification by stimulus type: - ✔️✔️1. Mechanoreceptors
2. Thermoreceptors
3. Photoreceptors
4. Chemoreceptors
5. Nociceptors
Mechanoreceptors - ✔️✔️sense mechanical force (pressure, touch, stretch, vibration)
Thermoreceptors - ✔️✔️respond to change in temperature
Photoreceptors - ✔️✔️sense light (i.e., receptors in the eye)
Chemoreceptors - ✔️✔️respond to chemicals in solution (smell, taste)
Nociceptors - ✔️✔️respond to potentially damaging stimuli that result in pain (stepping on smt
sharp)
Receptors are classified based on: - ✔️✔️1) types of stimulus they detect
2) where they are located in the body
, 3) their structural complexity
Classification by location in body: - ✔️✔️1) Exteroceptors
2) Interoceptors
3) Proprioceptors
Exteroceptors - ✔️✔️sensitive to stimuli acting outisde the body, most are located at or near body
surface. mostly touch, pain, pressure, etc.
Interoceptors - ✔️✔️also called visceroceptors. They respond to stimuli within the body. (e.g.,
chemical changes, tissue stretch). we are mostly unaware of these sensations.
Proprioceptors - ✔️✔️respond to internal stimuli (like interoreceptors). Are located mainly in
skeletal muscles, tendons, joint capsule and ligaments. Are constantly monitoring body position and
movement.
Classification by Receptor structure: - ✔️✔️1) General receptors
2) Receptors for special senses
General receptors - ✔️✔️1) Non-encapsulated: free nerve endings
2) Encapsulated: sensory neurons enclosed in a connective tissue capsule
Receptors generate a signal in response to a __________________ - ✔️✔️stimulus
Stimulus must be appropriate for the _____________________ - ✔️✔️receptor (i.e., light will not
stimulate a pain receptor)
What happens when a receptor is stimulated? - ✔️✔️the end result is the generation of the action
potential
2) Circuit level (info goes to the right part of the cortex)
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