@curiososconhecimentos: ⚡🦴 **Por que bater o cotovelo parece um choque elétrico?** Apesar do apelido de **"osso engraçado"**, o responsável por essa sensação não é um osso. Logo abaixo da pele, na parte interna do cotovelo, passa o **nervo ulnar**, um dos principais nervos do braço. Como ele fica muito próximo de uma saliência óssea e quase sem proteção, um simples impacto pode comprimí-lo por uma fração de segundo. Quando isso acontece, o nervo dispara impulsos elétricos involuntários que percorrem o antebraço até os dedos **anelar** e **mínimo**, causando aquela sensação intensa de choque, formigamento e dormência que quase todo mundo já sentiu. O curioso é que esse desconforto dura apenas alguns segundos, mas é suficiente para mostrar como o nosso sistema nervoso consegue transmitir informações em altíssima velocidade. 📚 **Referências** • Standring, S. (Ed.). *Gray's Anatomy: The Anatomical Basis of Clinical Practice*. 42ª ed. Elsevier. • Moore, K. L., Dalley, A. F., & Agur, A. M. R. *Anatomia Orientada para a Clínica*. Wolters Kluwer. • MedlinePlus – *Ulnar nerve dysfunction*. U.S. National Library of Medicine. #Ciência #CorpoHumano #Anatomia #SistemaNervoso #Canva

Curiosos Conhecimentos
Curiosos Conhecimentos
Open In TikTok:
Region: BR
Sunday 19 July 2026 12:29:45 GMT
1107
36
0
5

Music

Download

Comments

There are no more comments for this video.
To see more videos from user @curiososconhecimentos, please go to the Tikwm homepage.

Other Videos

Former President Barack Obama delivered a blistering criticism of President Donald Trump’s handling of Iran during a campaign rally in Cleveland, Ohio, arguing that a war “nobody asked for” has pushed up living costs for Americans across the country. Speaking on October 24 in support of Democratic candidates Amy Acton and Sherrod Brown ahead of the November 3 midterm elections, Obama accused Trump of creating an avoidable conflict by walking away from the 2015 nuclear agreement negotiated under his administration. “Most importantly, he decided to start an unnecessary war that nobody asked for,” Obama said. The former president defended his administration’s diplomatic approach, arguing that negotiations had successfully prevented Iran from obtaining nuclear weapons without military intervention. “Iran didn’t have nuclear weapons because I had put a deal in place that everybody acknowledged kept them from getting nukes, and I didn’t have to fire a missile to do it. I just had to engage in diplomacy,” he said. Obama also highlighted the military and economic consequences of the conflict, now entering its seventh month. “Our allies and our bases have been attacked. Americans have been k*lled, hundreds of Americans have been wounded. We have run down our stock of missiles, and Iran now has veto power over the Strait of Hormuz where oil goes through to the world market,” Obama told the crowd. He argued that the disruption to global energy supplies has directly affected American consumers, calling the conflict “the reason why the price of oil is up” and “the reason the price of diesel is up.” The criticism comes amid growing scrutiny of the war’s financial burden. Vice President JD Vance has publicly estimated the cost at approximately $30 billion, while the Congressional Budget Office has reportedly placed it closer to $38 billion, with expenses increasing by roughly $3 billion each month. As of the reported remarks, the White House had not directly responded to Obama’s statements in Cleveland.
Former President Barack Obama delivered a blistering criticism of President Donald Trump’s handling of Iran during a campaign rally in Cleveland, Ohio, arguing that a war “nobody asked for” has pushed up living costs for Americans across the country. Speaking on October 24 in support of Democratic candidates Amy Acton and Sherrod Brown ahead of the November 3 midterm elections, Obama accused Trump of creating an avoidable conflict by walking away from the 2015 nuclear agreement negotiated under his administration. “Most importantly, he decided to start an unnecessary war that nobody asked for,” Obama said. The former president defended his administration’s diplomatic approach, arguing that negotiations had successfully prevented Iran from obtaining nuclear weapons without military intervention. “Iran didn’t have nuclear weapons because I had put a deal in place that everybody acknowledged kept them from getting nukes, and I didn’t have to fire a missile to do it. I just had to engage in diplomacy,” he said. Obama also highlighted the military and economic consequences of the conflict, now entering its seventh month. “Our allies and our bases have been attacked. Americans have been k*lled, hundreds of Americans have been wounded. We have run down our stock of missiles, and Iran now has veto power over the Strait of Hormuz where oil goes through to the world market,” Obama told the crowd. He argued that the disruption to global energy supplies has directly affected American consumers, calling the conflict “the reason why the price of oil is up” and “the reason the price of diesel is up.” The criticism comes amid growing scrutiny of the war’s financial burden. Vice President JD Vance has publicly estimated the cost at approximately $30 billion, while the Congressional Budget Office has reportedly placed it closer to $38 billion, with expenses increasing by roughly $3 billion each month. As of the reported remarks, the White House had not directly responded to Obama’s statements in Cleveland.

About