When you ask the question, “What is nutrition?” to someone the most common answer would be, “A balanced diet and exercise.” This is certainly health for your body, but it is not exactly what nutrition is alone. Nutrition is the process by which organisms take in and utilize food material. People have many misconceptions of what nutrition is. This is why I interviewed three people, asked them some questions, and will clarify their misconceptions for them.
One of the questions Luis was “Can you give an example of a nutritious meal?,” his reply was, “pizza, pasta, and lettuce.” I am guessing he thought the pizza consisted of meat, cheese, and bread, the pasta would contain starch and dairy, and the lettuce would act as a vegetable. He is correct in the sense when you break it down, but as a meal this would not be so healthy. The pizza is full of grease and loads of sauce, cheese and toppings. Besides that factor, there is no fruit or liquid. Liquids, preferably water are a very important essential to your meal. Number one they feel you up faster which is a plus, and number two you need something to wash your food down with.
Another question that Luis, Jeff, and TJ all had a misconception about was, “Is there more to nutrition than diet food? If so what?” The answer to this question is no, nutrition is solely diet food and balance. Every one of them said yes, exercise. Thinking that exercise is a healthy part of your diet, but they were confused because it has nothing to do with nutrition.
Also there are many minerals you have to provide your body with, including zinc, iron, potassium, calcium, and so on. When I asked my classmates this question they did mention the top minerals, but were confused about others. Some mentioned carbohydrates and proteins, and some mentioned water. Even though these things are very good for your body, they are not minerals.
I was surprised at how much Luis, Jeff, and TJ did know. When I asked them the question, “What makes a nutritious meal?” They all replied with the correct answer. They replied, “A balance of everything in the food pyramid would make a nutritious meal.” Also when I asked, “What do you think nutrition is?” Not one of them said dieting and exercise. They all replied with, “Healthy foods.”
Overall they had a pretty good understanding of what nutrition is. They had good ideas of what kind of meals they should eat. Even though exercise is not a part of nutrition, they all said it which shows that they know what’s healthy for them. Even though they had some confusion on some things, I would have answered the same if I hadn’t studied nutrition.
Thanks: Luis Hernandez, Jeff Green, and TJ Jones!
Monday, April 21, 2008
Digestive and Urinary Questions
Critical Thinking-
3. What effect is a before dinner alcoholic cocktail likely to have on digestion? most likely your body will start getting dehydrated before you eat. Since you will be dehydrated this will take your body longer to digest.
Why are such beverages not good for people with ulcers? Because the alcohol could burn the ulcer or make it worse.
Review Exercises-
1. List the accessory organs of the digestive system- stomach, small intestine, large intestine
2. List the major parts of the alimentary canal. mouth, esophagus, stomach, small intes., large intest., rectum
5. Name the four layers of the wall of the alimentary canal. mucous membrane, submucosa, muscular layer, serosa
7. Describe the general effects of parasympathetic and sympathetic impulses on the alimentary canal. para- increases the activites of the digestive system, symapthetic are the opposite
12. Describe the structure of a tooth. enamel, crown, dentin, pulp cavity, gingiva, alveolar, root canal, root, cementum
25. Explain the mechanism of vomiting. results from a complex reflex that empties the stomach another way, irration or distension in the stomach or intestines can trigger it.
Review Exercises-
1. Name the organs of the urinary system kidneys, ureters, urethra, bladder
3. List the functions of the kidneys produce urine
9. Distinguish among filtration, re absorption and secretion as they relate the all work together to keep your body balanced
16. define auto regulation- ability of an organ or tissue to maintain a constant blood flow in spite of changing arterial blood pressure.
34. describe the structure and function of ureter carries urine from kidney to bladder
36. discuss what happens if a ureter becomes obstructed you will get a kidney infection
37. describe the structure of the urinary bladder stores urine until ready to be excreted
40. compare the urethra of a female with one of a male. the females is alot shorter then the male, also the males has 2 functions; urinate and ejaculate
3. What effect is a before dinner alcoholic cocktail likely to have on digestion? most likely your body will start getting dehydrated before you eat. Since you will be dehydrated this will take your body longer to digest.
Why are such beverages not good for people with ulcers? Because the alcohol could burn the ulcer or make it worse.
Review Exercises-
1. List the accessory organs of the digestive system- stomach, small intestine, large intestine
2. List the major parts of the alimentary canal. mouth, esophagus, stomach, small intes., large intest., rectum
5. Name the four layers of the wall of the alimentary canal. mucous membrane, submucosa, muscular layer, serosa
7. Describe the general effects of parasympathetic and sympathetic impulses on the alimentary canal. para- increases the activites of the digestive system, symapthetic are the opposite
12. Describe the structure of a tooth. enamel, crown, dentin, pulp cavity, gingiva, alveolar, root canal, root, cementum
25. Explain the mechanism of vomiting. results from a complex reflex that empties the stomach another way, irration or distension in the stomach or intestines can trigger it.
Review Exercises-
1. Name the organs of the urinary system kidneys, ureters, urethra, bladder
3. List the functions of the kidneys produce urine
9. Distinguish among filtration, re absorption and secretion as they relate the all work together to keep your body balanced
16. define auto regulation- ability of an organ or tissue to maintain a constant blood flow in spite of changing arterial blood pressure.
34. describe the structure and function of ureter carries urine from kidney to bladder
36. discuss what happens if a ureter becomes obstructed you will get a kidney infection
37. describe the structure of the urinary bladder stores urine until ready to be excreted
40. compare the urethra of a female with one of a male. the females is alot shorter then the male, also the males has 2 functions; urinate and ejaculate
Thursday, April 17, 2008
The Digestive System
1. What is the digestive tract? A long continuous tube with food first entering at the mouth.
2. What happens to undigested materials in the digestive tract? It exits out the anus with dead cells, bacteria and other waste .
3. Sketch the path that food takes through the digestive tract. Be sure to include the mouth, esophagus, stomach, duodenum, small intestine, appendix, large intestine rectum, and all 4 sphincters. This message is from me to me. Remember that you saw this and it was fine., Blogger just did not want to post it.
4. What is the function of the mouth in the digestion process? It brings the food into the body and breaks it down.
5. What is the term for the small mass of food that enters into the esophagus? Bolus
6. What triggers peristalsis? presence of the bolus in the esophagus.
7. What is the function of the cardiac sphincter? It closes the entrance to the stomach and prevents its contents from re-entering the esophagus.
8. What is the mucous membrane? A protective layer that lines the entire digestive tract.
9. How long is the small intestine? Over 20 feet.
10. Where does most digestion and absorption of nutrients take place? In the small intestine.
11. What increase the surface area of the small intestine? Villi
12. What is the first section of the small intestine? What is its function? The duodenum. its receptors can detect the presences of hypo- and hyper-tonic solutions, acid and chemical changes in the chyme which, via the duodenum, affect the action of the entire gastrointestinal tract.
13. Where is bile stored? In the gallbladder
14. What is segmentation? A muscle contraction that breaks up the intestinal contents and mixes them with the digestive juices.
15. When does the ileocecal sphincter open? When the amount of food in the small intestine begins to build up.
16. What is the function of the anal sphincter? Stops waste from leaving the body until you want it to.
17. What is the function of the appendix in humans? There is no function for it in humans.
18. Where does digestion begin? In the mouth
19. What is gastric juice made of? A mixture of hydrochloric acid
20. Where are enzymes released in the small intestine produced? By the pancreas or the the intestinal glands
21. What is the function of the following enzymes: amylase, lactase, maltase, sucrase, and lipase? Amylase- completes the process of hydrolyzing starch; Maltase
22. There are two ways that nutrients get into the blood stream. Describe each method. Some diffuse across the intestinal membranes and into the blood by flowing along the concetration gradient. Others are forced through the membrane against a gradient, since their concentration in the blood is alreadt greater than it is in the intestinal lumen.
2. What happens to undigested materials in the digestive tract? It exits out the anus with dead cells, bacteria and other waste .
3. Sketch the path that food takes through the digestive tract. Be sure to include the mouth, esophagus, stomach, duodenum, small intestine, appendix, large intestine rectum, and all 4 sphincters. This message is from me to me. Remember that you saw this and it was fine., Blogger just did not want to post it.
4. What is the function of the mouth in the digestion process? It brings the food into the body and breaks it down.
5. What is the term for the small mass of food that enters into the esophagus? Bolus
6. What triggers peristalsis? presence of the bolus in the esophagus.
7. What is the function of the cardiac sphincter? It closes the entrance to the stomach and prevents its contents from re-entering the esophagus.
8. What is the mucous membrane? A protective layer that lines the entire digestive tract.
9. How long is the small intestine? Over 20 feet.
10. Where does most digestion and absorption of nutrients take place? In the small intestine.
11. What increase the surface area of the small intestine? Villi
12. What is the first section of the small intestine? What is its function? The duodenum. its receptors can detect the presences of hypo- and hyper-tonic solutions, acid and chemical changes in the chyme which, via the duodenum, affect the action of the entire gastrointestinal tract.
13. Where is bile stored? In the gallbladder
14. What is segmentation? A muscle contraction that breaks up the intestinal contents and mixes them with the digestive juices.
15. When does the ileocecal sphincter open? When the amount of food in the small intestine begins to build up.
16. What is the function of the anal sphincter? Stops waste from leaving the body until you want it to.
17. What is the function of the appendix in humans? There is no function for it in humans.
18. Where does digestion begin? In the mouth
19. What is gastric juice made of? A mixture of hydrochloric acid
20. Where are enzymes released in the small intestine produced? By the pancreas or the the intestinal glands
21. What is the function of the following enzymes: amylase, lactase, maltase, sucrase, and lipase? Amylase- completes the process of hydrolyzing starch; Maltase
22. There are two ways that nutrients get into the blood stream. Describe each method. Some diffuse across the intestinal membranes and into the blood by flowing along the concetration gradient. Others are forced through the membrane against a gradient, since their concentration in the blood is alreadt greater than it is in the intestinal lumen.
Tuesday, April 15, 2008
Urinary System Worksheet
What are three functions of the kidneys? Filters all matter from the blood, not just waste, reabsorbs all substances the body can make use of, elminates waste in blood in form of urine
What is the protective layer around the kidney?peri-renal canal
What is the outer layer of the kidney? cortex
What is the urine collection system of the kidney? medulla
What is the dilated end of the ureters called? pelvis
What is the function of the bladder? to store urine
What transports urine in males? urethra Females?urethra
What is the protective layer around the kidney?peri-renal canal
What is the outer layer of the kidney? cortex
What is the urine collection system of the kidney? medulla
What is the dilated end of the ureters called? pelvis
What is the function of the bladder? to store urine
What transports urine in males? urethra Females?urethra
Thursday, April 3, 2008
Basic Respiratory System
What are the two entrances for oxygen to enter the respiratory system? Nose and Mouth
Where does the air go to from the nose and mouth? pharynx
In between the pharynx and the trachea what structure does this lesson leave out? larynx
Where is the trachea located in reference to the esophagus? anterior
What structures moisten the air in the Respiratory System? nose and mouth
What is the name for the small air sacs at the end of the bronchioles? alveoli
Where does gas exchange take place in the lungs? alveoli
What is the main muscle of respiration? diaphram
What happens when we inhale? the diaphram contracts Exhale? the diaphram relaxes
Sketch a picture of the respiratory system. Include the following structures: nose, mouth, pharynx, larynx, trachea, bronchus, bronchioles, alveoli and lungs.
The Heart
All vertebrates have what type of circulatory system? closed
How does the circulatory system maintain homeostasis? through water and electrolyte transport, fluid volume control, and regulation of PH and of body temperature
Name 4 functions of the circulatory system. transport dissolved nutrients,transports gases, transports anitbodies, fights infection
What are blood vessels that carry blood away from the heart called? arteries
What are blood vessels that carry blood to the heart called? veins
What is the sac that surrounds the heart called? pericardium
What is the muscular portion of the heart called? myocardium
What is the lining of the myocardium called? endocardium
What is the name of the upper cavities of the heart? atriums The lower cavities? ventricles
What veins carry blood to the left atrium? pulmonary veins The right atrium? superior and inferior vena cava
What arteries carry blood away from the left ventricle?aorta The right ventricle?pulmonary artery
How does the circulatory system maintain homeostasis? through water and electrolyte transport, fluid volume control, and regulation of PH and of body temperature
Name 4 functions of the circulatory system. transport dissolved nutrients,transports gases, transports anitbodies, fights infection
What are blood vessels that carry blood away from the heart called? arteries
What are blood vessels that carry blood to the heart called? veins
What is the sac that surrounds the heart called? pericardium
What is the muscular portion of the heart called? myocardium
What is the lining of the myocardium called? endocardium
What is the name of the upper cavities of the heart? atriums The lower cavities? ventricles
What veins carry blood to the left atrium? pulmonary veins The right atrium? superior and inferior vena cava
What arteries carry blood away from the left ventricle?aorta The right ventricle?pulmonary artery
Subscribe to:
Posts (Atom)
