Creatine and its effects on the human body My science fair project is about how creatine is used nutritiously for the human body and the effects it has on the body. I studied creatine and the effect it had on the body very thoroughly. You’re probably wondering what creatine is? And why do people use creatine? Well to begin with, creatine is an amino acid that is used to store energy for muscular contraction.
If you are using an older version of PhysioEx the exact activity names and numbers may not match. In this case, identify which activities in the older versions correspond to the ones listed below and place the appropriate data in the corresponding section. Activity 1: Investigating the Refractory Period of Cardiac Muscle Results: Briefly describe what happened when you applied the electrical stimuli to the heart. (2 marks) Question 1: Explain why the larger waves seen on the oscilloscope represent ventricular contraction. (1 mark) Activity 2: Examining the Effect of Vagus Nerve Stimulation Results: Briefly describe what happened when you electrically stimulated the vagus nerve.
1. You have created a simple electrical circuit with a battery, wires, and a light bulb. Which of the following is true about this circuit? (choose two answers). a.
Physics Project Julie Gay What is electricity, and how does it have anything to do with a battery or our body? According to “How Stuff Works”, “When you load a battery into an electronic device, you're not simply unleashing the electricity and sending it to do a task. Negatively charged electrons wish to travel to the positive portion of the battery -- and if they have to rev up your personal electric shaver along the way to get there, they'll do it. On a very simple level, it's much like water flowing down a stream and being forced to turn a water wheel to get from point A to point B.” So, what exactly does that mean to us? It means that electricity is a force that powers out world and our bodies (How stuff works, 2010).
(Calcium ions) are stored in the Sarcoplasmic reticulum. 4. The cause for the release of Calcium is the depolarization of the T-tubules. (Acetylcholine enters the synaptic cleft gap and opens the chemically gated sodium channel that starts an action potential spreading down the sarcolemma of the myofibril. This will cause an action potential to spread down to the T- tubules and “electrical chemical signals = shocks” the sarcoplasmic reticulum into releasing calcium ions.
Which parts of the frog’s nervous system can be observed in its abdominal cavity and hind leg? A. The vertebrae contained the spinal cord is visible. You can also see the spinal cord branch into two cords. One nerve cord runs to the right leg and one nerve cord runs to the left leg.
14 September 2012 Homework #2 1) A) The parts to a neuron are the cell body, bushy dendrite fibers, the axons, and the myelin sheath. B) Neural impulses are generated when a neuron fires an impulse called the action potential, which is a brief electrical charge that travels down the axon. The first part of the axon begins the process by opening up its gate, so that positively charged ions can flood through the cell membrane. As a result, this process depolarizes that axon section, causing another axon channel to open and then the process repeats continuously after the other. C) In terms of communication, nerve cells communicate with one another by having the dendrites receive the messages from other cells.
“The first law of thermodynamics states that energy can neither be created nor destroyed”. (King, R 2012) Energy can be converted into many different forms, such as; chemical energy can be converted into heat energy. Nutrients contain molecules that have high chemical energy potential but are often not available to the body. Chemical energy that is found in the nutrients can also be converted into a useful form of mitochondria, this is cellular respiration. Glucose + Water = Carbon dioxide + Water, the same time, ADP is converted to ATP a high energy unstable molecule.
Cryogenics is the study of the production and behavior of materials at very low temperatures (below −150 °C, −238 °F or 123 K). A person who studies elements that have been subjected to extremely cold temperatures is called a cryogenicist. The field of cryogenics advanced during World War II, when scientists found that metals frozen to low temperatures showed more resistance to wear. Based on this theory of cryogenic hardening, the commercial cryogenic processing industry was founded in 1966 by Ed Busch 7. PROPERTIES OF LIQUID HYDROGEN The byproduct of its combustion with oxygen alone is water vapor (although if its combustion is with oxygen and nitrogen it can form toxic chemicals), which can be cooled with some of the liquid hydrogen.
The Cannon-Bard theory is when the emotions and physiological responses occur at the same time. The Cannon-Bard theory states that we feel emotions and experience physiological reactions such as sweating, trembling and muscle tension simultaneously. More specifically, it is suggested that emotions result when the thalamus sends a message to the brain in response to a stimulus, resulting in a physiological reaction. For example: I see a snake --> I am afraid --> I begin to tremble. According to the Cannon-Bard theory, we react to a stimulus and experience the associated emotion at the same time.