Nidecker Act Ignition Snowboard Binding
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Sale Price:
$142.42
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Retail Price:
$258.95
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Item # NDK0045
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Quantity on hand: 1
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Black
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Description of Nidecker Act Ignition Snowboard Binding: |
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The Nidecker Act Ignition Snowboard Binding puts the pedal to the metal when you need freestyle response. Fine-tune your jibs thanks to the response and durability of a flexible DUPONT Zytel highback and Nidecker’s easy-to-adjust contoured heelcup. A slim-fit ankle strap and extra-fit toe strap adjust to your fit and respond with precision without weighing you down. Nidecker added its LDS dampening system to make your ride smoother, and threw in a Heel Pad for added shock absorption in case you decide to go big.
Bottom Line: The Nidecker Act Ignition Snowboard Binding shreds balls out.
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| Reviews (1): |
Average Rating: |
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| plants 05-18-09 |
sam (0):  |
| thar great
Animal Structure and Function
Part II: Animal Nutrition, Circulation & Gas Exchange, Immunity and Excretion
How Are Form and Function Related in the Digestive System?
1. What is the overall function of digestion (as a whole)?
The overall function of digestion is to break down food into smaller molecules. Starches are broken down into glucose molecules. Proteins are broken down into amino acids. Fats (Lipids) are broken down into glycerol and fatty acids. Nucleic acids are broken down into nucleotides.
2. a. State the major function(s) of each part of the mammalian digestive tract.
Mouth and teeth- The primary function of the mouth and teeth are to begin the process of digestion. Starch is broken down into the disaccharide known as maltose. Chewing reduces the size of the food particles which increases the amount of surface area for enzymes like amylase to continue the break down.
Esophagus- The esophagus is the pathway from the mouth leading to the stomach. Food is forced towards the stomach by way of peristalsis which are muscular contractions that force the food down.
Stomach- The stomach has several functions. First of all, the stomach is capable of expanding in order to make room to store material. The stomach also mixes the food with water and gastric juice to produce a substance called chyme. Muscles churn the contents of the stomach which physically breaks the food down into smaller particles. Hydrochloric acid denatures proteins and loosens the cementing substances between cells of the food. It also kills the majority of the bacteria that accompany the food. Proteins are digested by the enzyme pepsin which is produced by stomach cells. However, they are protected from self digestion because they produce pepsinogen and have a mucus layer. The Chyme then goes through the pyloric sphincter which is a regulated valve at the end of the stomach that leads to the small intestine.
Small Intestine- The first section of the small intestine is called the duodenum. Digestion of starches and proteins continues here as well as all remaining food types such as the fats and nucleotides. Various enzymes are produced in the small intestine, the pancreas, and the liver. These various enzymes aid in the process of digestion. The remaining portion of the small intestine is responsible for absorbing the breakdown products of food. It contains structures known as villi and microvilli which increase the total absorptive surface area. Amino acids and sugars are absorbed into blood capillaries.
Large Intestine- The main function of the large intestine is the reabsorption of water to form solid waste, or feces. Bacteria live in the large intestine, of which many produce vitamin K, which is absorbed through the intestinal wall.
b. How does the structure of each part reflect its function?
Mouth and Teeth- The major structural adaptations include different shaped teeth in order to grind foods to the smallest possible particles and amylase in the saliva which breaks down starch.
Esophagus- The major structural adaptations include a smooth muscle lining that works to squeeze the food towards the stomach. Also, the cardiac and pyloric sphincters control the passage of food into and out of the stomach.
Stomach- The major structural adaptations include a wall formed of a thick layer of smooth muscle and gastric glands which produce gastric juices (Pepsin and HCL).
Small Intestine- The major structural adaptations include accessory organs such as the liver and the pancreas connect to the duodenum and the villi, microvilli, and wrinkings which maximize the surface area for optimum absorption.
Large Intestine- The major structural adaptations include E. Coli bacteria that feed on undigested remains and produce vitamin K.
3. Digestion (in humans and many other animals) is both physical and chemical. Among the chief chemical agents of digestion are the digestive enzymes. What do enzymes do to food?
Digestive enzymes work by breaking down a polymeric macromolecule into their smaller building blocks. Digestive enzymes are classified by their substrates. For example, proteases and peptidases split proteins into amino acids.
4. How does a herbivore such as a cow extract the glucose from the cellulose in its diet? What characteristics of the structure and function of the digestive tract of a ruminant suit it for this function?
Cows are ruminary animals therefore undergo ruminant digestion. They are unable to break the cellulose down because they do not produce the enzyme cellulase. When the cow first chews and swallows the grass, boluses are formed and enter the rumen and some enter the reticulum. In both cases, mutualistic prokaryotes and protists begin to break down the cellulose. The cud is periodically regurgitated by the cow and rechewed to increase the amount of surface area of the food. Eventually the cud is swallowed into the omasum. In the omasum, water is removed. The cud which contains a large number of microorganisms then continues into the abomasum. Here the cud is digested by the cows own enzymes. The nutrients, such as glucose, are obtained through the digestion of the mutualistic microorganisms.
5. A good rough generalization is that the more meat in the diet of a species of animal, the shorter its intestine. In comparison, herbivores have long intestines (length always being relative to total body length). How can this be explained?
Food travels through the digestive tract at a consistent pace. Plant materials are harder to fully digest than meat, therefore more time is needed. Because the food travels at a consistent pace, a longer intestine would be necessary to increase the time in which digestion is available to take place.
6. What would happen to the normal function of the digestive tract if part of one of the organs was removed or greatly reduced in size (for example, as the result of surgery to remove cancer)? How would a person’s eating habits need to change to accommodate the reduction in size?
Depending on which part of the digestive tract was removed, a person’s eating habits might have to change drastically. The large intestine functions in the reabsorption of water to form solid waste. The individual would have to consume more water if part of their large intestine were removed. The small intestine functions in gathering the necessary nutrients. An individual would need to eat more if part of their small intestine was removed in order to ensure they were getting the same amount of nutrients. Lastly, the stomach functions in the ability to store food. If part of the stomach was removed, an individual would not be able to eat large meals. Instead they would have to consume several small meals a day.
How Is Mammalian Heart Structure Related to Function?
1. The degree of musculature differs in these chambers of the heart: right & left atria, right ventricle, left ventricle.
a. Draw the heart and its chambers, noting the differences in musculature (which is thinnest, which is thickest?).
b. Explain why the differences in musculature might exist by explaining the normal functions of each chamber.
The two atria function as collection chambers for blood returning to the heart. The contraction of the atria moves the blood to the ventricles with ease because they are so close together. This contraction does not need to be too forceful there for the walls are fairly thin and contain little musculature. The ventricles are responsible for pumping the blood throughout the body and back to the atrias, therefore the contractions need to be much more powerful. In order for these contractions to be more powerful, they are thicker, and have greater musculature than the atria. The left ventricle pumps blood to all body organs through the systemic circle and contract more violently then the right ventricle which still pumps the same volume of blood. The amount of musculature directly relates to the amount of force that is needed by each contraction in order to fulfill the required function of the chamber.
c. Include in your description the functions of the SA node (pacemaker), the AV node, and the AV and semilunar valves.
The SA node which is also known as the pacemaker sets the rate and timing at which all cardiac muscle cells contract. It is located in the wall of the right atrium and it produces electrical impulses much like the ones produced by nerve cells. These impulses first spread rapidly through the walls of the atria, causing both of the atria to contract together. During this contraction, the impulses then reach the AV node which is located between the left and the right atria. The AV node delays the impulses to allow the atria to empty completely before the ventricles contract. This ensures blood does not flow back into the atria once the ventricles contract. AV valves lie between each atrium and ventricles. Semilunar valves are located at the two exits of the heart. These valves are pushed open by the pressure generated by the contraction of the ventricles. When the ventricles relax, pressure built up in the aorta closes the semilunar valves and prevents significant backflow.
2. One of the most common congenital defects of the cardiovascular system is called “transposition of the great arteries.” In infants who have this defect, the pulmonary artery exits from the heart where the aorta should and the aorta exits where the pulmonary artery should. All other circulatory connections are normal. |
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| Don't buy Nidecker 04-01-09 |
rdubachreg2008189 (4):  |
| My wife and I have ridden Nideckers for 10 years and used to love them. My wife rides a princess and I rode a legend. The rail of my legend separated from the core of the board after only riding it 12 times. Coincidentally I had a tiny wax scratch (the kind you get from running over a small stone) directly by the damage, which Nidecker said voided the warranty. Worthless product if the manufacturer doesn't stand by it's quality. In response to the negative reviews I have written about Nidecker product the North American sales rep Donny told me, "It's a shame you felt the need to be spiteful but I suppose that is how you deal with disappointment."
Really? I guess I am a little disappointing that a $600 board was defective and the company wouldn't stand by their warranty.
To top it off, they made me pay for shipping to them and back.
Expensive boards, poor customer service, faulty product. I wouldn't buy it again. |
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| Highback: |
DUPONT Zytel nylon |
| Strap: |
[Ankle] slim-fit; [Toe] extra fit (Baltimore & regular) |
| Baseplate: |
Reinforced polymer |
| Flex: |
Medium |
| Recommended Use: |
Freestyle riding |
| Manufacturer Warranty: |
1 Year |
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