Human Biology IIIMidterm Assignment

Spring 03Digestive, Respiratory and Urinary Systems

This assignment isdue Thursday May 15^th.

• For each question, please read the corresponding section in your text as well as one other source [there are A&P texts in the library, one on open & one on closed reserve], citing them at the end of each question [i.e. question #1 your answer here. Citations: A& P by Stephen, Seeley and Tate & Nutrition Now by Brown question # 2 your answer here. Citations: A& P by Stephen, Seeley and Tate & Human Physiology by Guyton, question #3 etc. You get the idea; I should be seeing the same textbook for each question. ] Your citations may include websites, or journal articles. If you use a journal article, include FULL bibliography. Failure to follow these directions [if you don’t understand them – ASK!] will reflect on your evaluation.

• All answers must be typed and include the original question at the beginning.

• NO LATE PAPERS ACCEPTED. You are welcome to submit them early, or by email.

Questions:

You are eating a quick snack: a peanut butter and jelly sandwich.You wash it down with a big swig of orange juice.Identify each part of the digestive tract your snack will travel -in order.At each section of the tract identify what will happen to your sandwich and juice; include all chemical, mechanical and bacterial digestion, be sure to indicate where individual nutrients are broken down and into what structures are absorbed. 

Find an anatomical drawing of the structures that make up the respiratory tract, photocopy it and paste it on your answer sheet.On this photo identify the upper respiratory tract & lower respiratory tract. Which would you expect to be more susceptible to pathogens? Defend your answer by explaining how the tract protects itself from potential pathogens [hint: this is partially immunity – partially histology]

There are some similarities between non-related systems in the body.What anatomical similarities can be drawn between the urinary & the digestive systems? What physiological similarities can be drawn between the two systems? [You must supply a minimum of 2 examples for each.] You can use drawings to substantiate your answer.

Jett, age 24 complained that since returning from a brief trip out of the US, she has suffered from frequent watery stools.Identify what might be a common diagnosis of her symptoms.Discuss the implications at the level of the digestive tract, but also how the urinary tract should be responding to the chronic diarrhea.

Name & describe the three basic processes of respiration.In addition, indicate the mechanisms for maintaining homeostatic pH levels of blood while transporting metabolic gases.