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posażona w wyspecjalizowane zakończenia nerwowe, czyli receptory, umieszczone w skórze, mięśniach i innych punktach ciała, reagujące na różne bodźce i przekazujące do mózgu wrażenia otrzymywane z zewnątrz.
How do our bodies get information through the sense of touch?
Nick was desperate. His paper for History class was due in an hour, but the thermostat in the computer lab wasn’t working and it was freezing in there!
Pulling on his ski glove liners, he tried to finish typing the paper. “Hey man, whadda ya doin’?” Dave mumbled as he walked in. “Me?” said Nick. “Trying to type my paper. Hey, what happened to you?? Your face looks lopsided.”
“Yeah,” said Dave, “I hadda go to the dentist—now my face is numb. Man, I can’t feel a thing when I touch it. Why are you wearing gloves??” “I’m freezing in here,” said Nick, “but I’ve got to type this paper. Boy, this isn’t working. I can’t feel where one key ends and the next one begins. I’m making too many mistakes!” “Yeah, we’re a matched pair,” said Dave. I can’t feel anything on my face, and you can’t feel anything with your fingers.”
What’s going on here? Are Nick’s and Dave’s problems really alike? What has happened to their senses of touch?
We hardly think about our sense of touch until something goes wrong—trying to find a small object with gloves on, waiting for dental anesthetic to wear off so our faces don’t feel “dead.” What a relief when things are back to normal! Just how does the skin let the brain know what it is touching?
You’ve noticed that when you want to find out whether something is smooth or rough, you run your fingertips over it, rather than the palm of your hand or your elbow. And you may have noticed that you can feel a tiny fragment of a bone in your mouth, but you wouldn’t have noticed it at all if you had stepped on it with your bare foot. What does it mean when part of your body is “better” at getting touch information? Your teacher will discuss in class the parts of the
How do our bodies get information through the sense of touch?
Nick was desperate. His paper for History class was due in an hour, but the thermostat in the computer lab wasn’t working and it was freezing in there!
Pulling on his ski glove liners, he tried to finish typing the paper. “Hey man, whadda ya doin’?” Dave mumbled as he walked in. “Me?” said Nick. “Trying to type my paper. Hey, what happened to you?? Your face looks lopsided.”
“Yeah,” said Dave, “I hadda go to the dentist—now my face is numb. Man, I can’t feel a thing when I touch it. Why are you wearing gloves??” “I’m freezing in here,” said Nick, “but I’ve got to type this paper. Boy, this isn’t working. I can’t feel where one key ends and the next one begins. I’m making too many mistakes!” “Yeah, we’re a matched pair,” said Dave. I can’t feel anything on my face, and you can’t feel anything with your fingers.”
What’s going on here? Are Nick’s and Dave’s problems really alike? What has happened to their senses of touch?
We hardly think about our sense of touch until something goes wrong—trying to find a small object with gloves on, waiting for dental anesthetic to wear off so our faces don’t feel “dead.” What a relief when things are back to normal! Just how does the skin let the brain know what it is touching?
You’ve noticed that when you want to find out whether something is smooth or rough, you run your fingertips over it, rather than the palm of your hand or your elbow. And you may have noticed that you can feel a tiny fragment of a bone in your mouth, but you wouldn’t have noticed it at all if you had stepped on it with your bare foot. What does it mean when part of your body is “better” at getting touch information? Your teacher will discuss in class the parts of the