Sensory Receptor Classification by Location - Video Tutorials & Practice Problems
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concept
Sensory Receptor Classification by Location
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3m
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Video transcript
Hey everyone. So in this video we're going to be talking about how we can classify sensory receptors based on the location of the stimulus that they detect. So we're gonna start with exteroceptors. Now exteroceptors detect stimuli originating outside of the body. So these can include things like the receptors on your skin that could be picking up, pressure, vibration, temperature, pain, things like that. And this also includes our special senses. So things like hearing or vision or smell because all of those involve external stimuli. Right? Light has to enter your eyeballs, sound waves come into your ear, there are chemicals in the air that you can smell, etc. So those are our exteroceptors. Next, we have interoceptors and these will detect stimuli originating from inside the body. So entero inside, right? And these are sometimes also called visceroceptors because they often deal with the viscera or the internal organs. They also deal with things like blood vessels to them. And these will detect a variety of stimuli. So they can detect pain all throughout your body. They detect the chemical composition of our internal fluids. They detect visceral stretch, so the stretch of your organs, which makes them very important for things like digestion. They give you feelings of fullness. They're important for bladder control. They tell you if your bladder is empty or full, things like that, and they also monitor your internal temperature. So, these are very important for maintaining homeostasis. They really give you kind of that whole body sense of is everything okay is kind of what they're they're responsible for. And then finally, we have proprioceptors. Now, proprioceptors also monitor information from inside the body, so they are similar to interoceptors in that way, but proprioceptors are a distinct type of receptor and these specifically monitor body position and stretch and they are located in the musculoskeletal system. So, proprioceptors are going to be found in your muscles, tendons, joints, and the connective tissue around your bones. And again, the scope that they, of the information that they give you is much more limited than exteroceptors and interoceptors. These are specifically going to be giving you information about body position and stretch and things like that. And these, of course, will give you your sense of proprioception, which is where your body is in space and how your body is moving through space. So if we scooch down here to our figure, we're gonna look at these people. We'll look at their receptors and what they're doing, and we'll, give them each a label. So looking at this first girl here, we can see that she is hearing something. She has some sound waves entering her ear and she is smelling this delicious looking cup of coffee, which means she must be using her exteroceptors. Right? All of those stimuli are outside of her body. And then here, this girl in the middle, she has a nice full stomach. She's got pizza, cookies, all kinds of good things in there, but detecting that fullness is a sensation from that visceral stretch. Right? So that is coming from her enteroceptors. And then this last guy over here we can see he is pumping iron. You can probably tell that I don't do that very often unlike him with his big old bicep, right? But he's getting information coming from that muscle, that tension, the stretch, whatever it is he's feeling, and that must be his proprioceptors. So there you have it. That is how we classify sensory receptors based on the location of the stimulus that they detect, and I'll see you guys in our next video. Bye bye.
2
example
Sensory Receptor Classification by Location Example 1
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1m
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Video transcript
Okay. So this example asks us to read through this story and then we're going to be filling in these blanks with some type of sensory receptor. So let's dive right in. Alright. So Sabina decides to go for a swim in the lake. When she first dips her toe in the water, her blank detect the cold temperature and she quickly retracts her toe. Eventually, she builds up the courage to get in and once in the water her blank allow her to monitor the position of her body and the stretch of her muscles as she's swimming. After a while, she feels a painful cramp in her hamstring detected by her blank. So let's just go through and look for some keywords that are gonna help us here. So when she first dips her toe in the water something detects that cold temperature. So that's gonna be something on the surface of her skin detecting a stimulus that is outside of her body. Right? So I'm thinking probably an exteroceptor. And then eventually she builds the courage to get in and she's monitoring the position of her body and the stretch of her muscles. Sounds like a proprioceptor. So let's put a p there. And then she eventually feels this painful cramp in her thigh. So I'm thinking nociceptor. Right? And so let's if we look at our answer choices here, answer d has exteroceptors for the first blank proprioceptors for the second, and nociceptors for the third. So that is our answer, and I will see you guys in our next one. Bye bye.
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Problem
Problem
We can touch our finger to our nose while our eyes are closed, as we can sense the movement and position of our joints and body parts without seeing them. Which type of receptor allows us to do this?
A
Proprioceptors.
B
Mechanoreceptors.
C
Interoceptors.
D
Photoreceptors.
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Problem
Problem
One day, Kaya feels a sharp pain in her stomach area. How would you classify the sensory receptor that is responsible for detecting the issue and causing Kaya to feel this pain?
A
Exteroceptor & nociceptor.
B
Exteroceptor and chemoreceptor.
C
Interoceptor and nociceptor.
D
Interoceptor and chemoreceptor.
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