11 Jun The human body is organized in the following way
Question
The human body is organized in the following way. Molecules like carbohydrates, proteins, and lipids
build cells. The human body is about 6090 trillion cells. Cells organize themselves into tissues. There are four different kinds of tissues in living bodies: connective, muscle, epithelial and nervous. Tissues combine to form organs. Examples are stomach, heart, kidneys, lives, etc. Organs that have
similar functions combine to form organ systems. Examples are the digestive system, the respiratory
system, the excretory system, the circulatory system, etc. All the systems together combine to form a human. So, to summarize: organization in a human body looks something like this: Molecules Cells Tissues Organs Organ systems Human Being
1. Cells combine to form tissues. There are four different kinds of tissues in living things. Fill in the following table that describes the four kinds of tissues: Where is this kind of What is the function tissue found in the of this kind of body?
tissue? Epithelial Muscle Nervous Connective
Tissues of different kinds combine to form an organ. Ex: your stomach is made up of epithelial tissue
that is in contact with the food in your stomach, connective tissue that binds the epithelial tissue to the next layer of muscle tissue, and finally, on the outside another very thin layer of connective tissue. Then organs with similar functions work together to accomplish a function like digestion. The digestive system is made up of many organs: mouth, esophagus, stomach, small intestine, large intestine, pancreas, liver and gall bladder. We will focus on studying the digestive system and other systems that contribute to nutrition. 1. Define the terms: 1. digestion 1. absorption 1. mechanical digestion 1. chemical digestion 1. bolus 1. chyme 1. peristalsis
3. What is the difference between digestion and absorption?
4. Fill in the following table that describes the digestive system:
What happens in this part of the digestive tract? Mouth Esophagus None Stomach Small Intestine Large Intestine Pancreas Liver Gall Bladder
5. What are the main 5 sphincters within the digestive tract or alimentary canal? What is the function of each?
6. What is an enzyme? Describe how an enzyme works and why it is important for digestion.
7. What happens to food in the stomach? What is it called when it leaves? What role does pepsinogen have? HCl?
8. What are villi? Microvilli? Why are they important to the structure of the small intestine?
9. What is the main function of the small intestine? 10. What role does the pancreas play in digestion of food?
11. What role does the gall bladder play in the digestion of food?
12. What role does the circulatory system have in moving nutrients around the body?
13. Why are the bacteria in our colon so important? What does fermentation have to do with it?
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