Classification of Sensory receptors | Sensory Physiology mbbs 1st year lecture | CNS physiology
Physiology lecture on central nervous system physiology explains Sensory receptors
Buy concept based physiology notes here:
Download
Android app for Physiology notes here: play.google.com/store/apps/de...
IOS app: apps.apple.com/in/app/myinsti... (use org code:ezlep)
Website: www.physiologyopen.com/
Afferent neurons have sensory receptors at their peripheral endings. Receptors as the term indicates receive information or we can say characteristics of a stimulus from the surroundings. The stimuli are of various types depending on the type of energy change for e.g. there can be either mechanical stimulus , chemical stimulus or thermal stimulus etc. Body has sensory receptors for detecting different types of energies. But once the receptors detect the stimulus, it has to be transmitted to the CNS as action potential, so receptors convert the stimulus energy into electrical signals. This is known as signal transduction.
Sensory Receptors can be classified in 3 ways
1. based on their location: exteroceptors, interoceptors and proprioceptors
2. based on modality of stimulus they detect: mechanoreceptors, chemoreceptors, thermoreceptors, nociceptors, and electromagnetic receptors .
3. Based on rate of adaptation: Slowly adapting receptors and fast adapting receptors
In skin , their are various mechanoreceptors. However, they are located in various layers of skin e.g. Merke;'s disks are located superficially in dermis and detect superficial texture of the object while Ruffini ending is deeper in dermis and detects pressure. Also there are Meissner’s corpuscle versus pacinian corpuscles. Both these receptors adapt very fast. Thus, they detect vibration sense. But, meissner’s corpuscle respond to slow vibration while pacinican corpuscle respond to fast vibration because pacinian corpuscle adapt very very fast. And pacinican corpuscles are located deep so they respond to deep pressure vibration while Meissner’s has to be superficial like a flutter on the skin. Also, meissner’s corpuscles detect the sensation from a small superficial area while Pacinian corpuscle respond to a stimulus even when it is present in a little larger area. This is known as receptive field of the receptor.
Watch our other popular playlists:
Sensory physiology playlist: • Sensory system
Special senses Physiology: • Special senses Physiology
CNS physiology: • Central nervous system...
Cardiovascular physiology: • Cardiovascular physiol...
Respiratory physiology: • Respiratory system phy...
General Physiology: • General physiology mbb...
Blood physiology: • Blood physiology, path...
Renal Physiology: • Renal system physiolog...
Endocrine physiology: • Endocrine system | Phy...
Buy our Practical Physiology book here:
Amazon: www.amazon.in/Practical-Physi...
Flipkart: www.flipkart.com/practical-ph...
#1styearMBBS
#MBBS1styear
#neurophysiology
#sensoryphysiology
#physiology
#physiologyopen
#physiologylectures
#sensorysystem
Пікірлер: 56
Hi! I'm preparing for my final exam in Neuroscience and your videos are making my life much easier. You're explanatory abilities are phenomenal, thank you! Best, j
@PhysiologyOpen
3 жыл бұрын
So glad...and best of luck for your exams
Such a wonderful teacher..such a great teaching style..you are the most fascinating physiology teacher madam...stay safe and stay blessed madam amidst good health happiness and success forever..tc
@PhysiologyOpen
2 жыл бұрын
😊😊😊❤️
Thank you so much for having this topic! It was helpful...
@PhysiologyOpen
3 жыл бұрын
Welcome 😊
Awesome explanation mam....tq mam
@PhysiologyOpen
4 жыл бұрын
Thank you😊
Thank yew maam... 😇 It's very useful
@PhysiologyOpen
4 жыл бұрын
Happy that it helped. Don’t forget to press the share button
I dont get it why there aren't thousands of likes on this video. Your teaching is amazing.
@PhysiologyOpen
Жыл бұрын
Thank you
Maam!! Really really thankful to you😇💓💓
@PhysiologyOpen
3 жыл бұрын
All the best
Superb explanation start doing ma'am don't stop 😊
@PhysiologyOpen
Жыл бұрын
Surely
5:30 - adaption of receptors
Fantastic explanation
@PhysiologyOpen
3 жыл бұрын
Thankyou
Ma’am ur videos are really help full can u please do some more videos please
@PhysiologyOpen
2 жыл бұрын
Yeah...recently got busy in some things...soon coming back with double force
Mam what is the direction of AP conduction in Free nerve ending receptors ? from axon to cyton ??
@PhysiologyOpen
3 жыл бұрын
It’s bipolar neuron....so basically the axon coming towards skin...actually carries AP to the spinal cord
Great video
@PhysiologyOpen
Жыл бұрын
Glad you enjoyed it
Thanks ma'am
@PhysiologyOpen
2 жыл бұрын
Most welcome 😊
Mam, very very beautiful explanation 👌
@PhysiologyOpen
Жыл бұрын
Thank you so mucg
Mam your vedio is awesome please upload full cns vedio mam
@PhysiologyOpen
4 жыл бұрын
Playlist on sensory system: m.kzread.info/head/PLnt1wzLU3qo3m74f5LF02-vzia_rm3IbG
@SAURAVKUMAR-qj3lm
4 жыл бұрын
Mam special senses and motor
@PhysiologyOpen
4 жыл бұрын
Coming soon
Thank you Mam..mam can u plz tell me that why in spike protein the rbd receptor is variable in nature. .thank you Mam
@PhysiologyOpen
4 жыл бұрын
Why it is different may have 2 answers - one by how genome works - Receptor binding domain differs in various coronaviruses, coz their genomes are different leading to different amjno acid sequences in thebinding domain. 2nd may have be a teleological answer - that is the evolution worked like that, and all of the various variations of the receptor binding domain led to survival of the virus
@meghabhagat4972
4 жыл бұрын
@@PhysiologyOpen Thank you Mam ..greetings..thanks for guiding us
@PhysiologyOpen
4 жыл бұрын
You are most welcome
Thank.you.so.much.medam.
@PhysiologyOpen
3 жыл бұрын
Pleasure is all mine
❤
@PhysiologyOpen
3 ай бұрын
😊
Ma'am, nociceptors detect stimuli whose intensities may cause damage to neighboring cells. Do the stimuli damage the nociceptors too? When cells are subjected to such stimuli they either adapt or get injured. After cellular adaptation, does the nociceptor still detect the once stressful stimulus?
@PhysiologyOpen
3 жыл бұрын
If the damage is deep enough, yes the nociceptors will be damaged..like happens in burns...superficial burns are very painful because in them nociceptors are stimulated and cause extensive pain..however in deep burns nociceptors are themselves damaged..so they are not painful...pain starts when healing occurs.. When cells of skin adapt i.e to chronic painful stimuli, ofcourse they are becoming keratinized or due to frequent injury fibrosis occurs...in both cases they become less responsive to the same stimulus for which they were responsive before i.e the threshold of stimulus increases
@aaqil8344
3 жыл бұрын
@@PhysiologyOpen thank you ma’am.
@PhysiologyOpen
3 жыл бұрын
Always welcome
Mam which book will be best to study for CNS. I am an undergraduate medical student
@PhysiologyOpen
4 жыл бұрын
Guyton according to me.
@jenniferj1510
4 жыл бұрын
@@PhysiologyOpen thank you mam.
💜💜💜
@PhysiologyOpen
2 жыл бұрын
😊
What is sensory coding ?????
@PhysiologyOpen
3 жыл бұрын
Check out 3 videos in this playlist: sensory transduction, labelled line principle and receptive field for sensory coding : m.kzread.info/head/PLnt1wzLU3qo3m74f5LF02-vzia_rm3IbG