isolated frog muscle could be made to contract when the sciatic nerve was irritated with a metal object‚ conducted the first muscle experiments between 1661 and 1665. Later‚ between 1737-1798 Luigi Galvani determined that frog muscle responded to electrical currents. The kymograph‚ which was invented in the late 1840’s lead to the revolution of experimental physiology because it enabled muscle contractions to be analyzed and recorded. The muscle cell or fiber is the basic unit of a muscle. The frog gastrocnemius
Free Muscle Muscular system Myosin
revolutionary leader and driving force is highlighted. Introduction GE and Jack Welch’s Legacy Thermidorean reaction after Welch’s retirement. (The French Thermidorean reaction refers to the period after the Reign of Terror‚ in 1794‚ when the tyrant Robespierre was removed from power and an economically and culturally liberal government came to power.) This reaction‚ in turn‚ was due to Welch’s less creative‚ more opportunistic and more intolerant leadership during his last years of tenure
Premium General Electric October Revolution
therapy is A. emotional expression. B. self-responsibility. C. philosophical reasoning. D. self-criticism. 2. According to psychologist Martin Seligman‚ depression is largely a response to A. learned helplessness. B. manic elation. C. sexual abuse during childhood. D. chronic negative circumstances. 3. For the psychologist‚ abnormal behavior can be thought of as expressing distress of some kind that obstructs one’s ability to function. Because this is such a broad definition‚ it’s best to think of
Premium Abnormal psychology Antisocial personality disorder Borderline personality disorder
In Albert Brooks‚ 2030: The Real Story of What Happens to America‚ the American population has started aging proficiently. While upon first look‚ this book appears to be a book simply about what Brooks predicts will happen in the future‚ it is actually about a lot more. I am sure that there would be no complaints if cancer was cured tomorrow. Well in 2030‚ this dream comes true. The cure of cancer brought about a surge of baby boomers‚ in the millions. This appears to be a good idea‚ I mean
Premium Earthquake Future Government
Imagine having nonstop growing fat on your stomach. That is what happens with Gaucher’s Disease. Gaucher’s is when your recessive gene gets duplicated and the metabolism gets built up with fat called glucocerebroside and it can’t be degraded‚ you can’t get rid of it. Some of the major causes are enlargement of the stomach or spleen. You can also have a low amount of red blood cells. Some symptoms of this disorder are easy bleeding or bruising‚ extra fat on stomach‚ bone and joint pain‚ and weak bones
Premium Obesity Nutrition Medicine
What Happens to a Bill on the President’s Desk Laws are made in order to govern behavior in society. There are many types of laws including civil law‚ administrative law‚ criminal law‚ constitutional law‚ and international law. In order for these laws to be put into action‚ there is a process that must be followed. Laws start out as a bill. Anyone can draft a bill such as parties‚ interests groups‚ or presidents; and it is up to Congress to act favorably in order for the bill to become a law. According
Premium United States Congress President of the United States United States Constitution
E 2 Skeletal Muscle Physiology O B J E C T I V E S 1. To define these terms used in describing muscle physiology: multiple motor unit summation‚ maximal stimulus‚ treppe‚ wave summation‚ and tetanus. 2. To identify two ways that the mode of stimulation can affect muscle force production. 3. To plot a graph relating stimulus strength and twitch force to illustrate graded muscle response. 4. To explain how slow‚ smooth‚ sustained contraction is possible in a skeletal muscle. 5. To graphically
Premium Muscle contraction Muscle Muscular system
What can two dollars buy you? A small coffee at Starbucks‚ a candy bar‚ bag of chips‚ and a soda‚ a slice of pizza. For nearly three billion people‚ approximately half of the world ’s population‚ two dollars a day is all the money that the person has to live on. Moreover‚ of the 2.2 billion children in the world‚ 1 billion grow up in poverty; 640 million without adequate shelter‚ 400 millions with no access to safe water‚ and 270 million with no access to health services (UNICEF 2005). One proposed
Premium World Bank Poverty Infant mortality
Lab 6: Amphibian Muscle Contraction Results: For this experiment‚ Isometric contractions of the gastrocnemius muscle of a frog were analyzed and from this data the latent period‚ twitch‚ motor unit summation‚ tetanus‚ fatigue & mechanical summation were measured. The data was used to quantify the effect of passive tension on the twitch force‚ effect of stimulus intensity on the twitch force‚ effect of stimulus frequency on contractile force of xenopus gastrocnemius muscle. The threshold voltage
Premium Muscle Acetylcholine Action potential
What really happened at the Alamo? The Alamo in San Antonio‚ Texas‚ was originally known as Mission San Antonio de Valero. It was one of five Spanish missions established by Franciscans in he late 1700s and was the first set along the San Antonio River. People in the unit started calling the post "The Alamo" after the name of their home‚ Alamo de Parras‚ Coahuila in 1744. "Alamo" is also a Spanish word for cottonwood. The Alamo in Texas became a place where a battle took place. This is known
Premium Texas Revolution Antonio López de Santa Anna Texas