What happens with blockage of fast sodium channels? Am I correct to say that it increases refractory period as phase 0 of fast AP is delayed? Does this mean a decrease in heart rate due to decrease in rate of contractility from decreased spread of depolarization?

During natural disasters like hurricanes when the community is living in shelters, why would there be a concern about a tuberculosis outbreak? what circumstances have led to the spread of drug resistant tuberculosis? Mary, a nurse, skin test was positive for tuberculosis. Does this mean she has tuberculosis? explain

What is pancreatitis and what are some causes of this condition? Briefly outline the endocrine and exocrine functions of the pancreas

“Like a polio ward from the 1950s” is how Guy McKhann, M.D., a neurology specialist at John Hopkins School of Medicine, describes a ward of Beijing Hospital that he visited on a trip to China in 1986. Dozens of paralyzed children---some attached to respirators to assist their breathing--filled the ward to overflowing. The chinese doctors thought the children had Guillain-Barre syndrome (GBS), a rare paralytic condition, but Dr. McKhann wasn’t convinced. There were simply too many stricken children for the illness to be the rate Guillain-Barre syndrome. Was it polio--as some of the Beijing staff feared? Or was it another illness, perhaps one that had not yet been discovered? Guillain-Barre syndrome is a relatively rare paralytic condition that strikes after a viral infection or an immunization. There is no cure, but usually the paralysis slowly disappears, and lost sensation slowly returns as the body repairs itself. In classic Guillain-Barre, patients can neither feel sensations nor move their muscles.

Is the paralytic illness that affected the chinese children a demyelinating condition? Why or why not?

1)what is the inflammatory digestive system condition that is common in adolescence ? What events leads to this condition?
2)what is the digestive system condition that can result from a fiber poor diet ? what inflammatory condition can this lead to? how do the symbols of this condition manifest ?

Georgina has recently gone to her primary care provider for her annual physical. As part of routine examination a vision exam is given. Georgina has always had perfect vision but is having some difficulty with this test today. Upon further questioning, the medical assistant learns that Georgina has been experiencing blurred vision for quite some time and often sees what she describes as rings when she is near bright light. On physical examination the provider also notices a cloudy appearance to Georgina’s corneas.

What condition is Georgina likely experiencing?

What treatment options are available for the diagnosis you chose?

What is Georgina’s prognosis for a full recovery given the different treatment options you discussed?

A 150 lb., 63-year-old man is experiencing exertional dyspnea, shortness of breath, mild cyanosis, and marked slowing of forced expiration. He is chronically fatigued from the action of breathing and appears to have a "barrel chest." In addition, he has been a smoker for 40 years. The doctor describes his condition as a "progressive disease that directly affects the site of gas exchange in his lungs."

What is the disorder of this man? Be as specific as possible. (Hint: more specific than "COPD").

What the condition is, what the condition does, how it affects movement or exercise, and how it affects daily life.

a) Traumatic Brain Injury (TMI)

b) General Intellectual Disability

c) Down's Syndrome

d) Peripheral Arterial Disease

e) Type II Diabetes

Multiple sclerosis is a condition that affects the central nervous system. In this assignment, you will explore this condition in more detail using the scenario below.

Scenario:
A friend of yours discloses that he was recently diagnosed with multiple sclerosis. Being the caring friend you are, you wish to know more about the condition and how you can best support your friend. You decide to research this disease further.

To complete this assignment, do the following:

1. Research this disease using a minimum of 2 sources. You can use your textbook for one of the sources. Choose the remaining source(s) from the GALE Virtual Reference Library provided on the Structure and Function of the Human Body library guide page.
2. In a minimum of 2 pages (not counting the references page), address the following:
   • Explain how multiple sclerosis affects the nervous system.
   • Describe the treatment options that are available for your friend.
   • State whether it was possible for your friend to have prevented this condition.
3. Include a references page at the end of your document, formatted using the APA guidelines, that lists your research sources. include 2 sources.

Construct a table that illustrates the structure and function of the glycocalyx, ECM, 3 types of cytoskeletal elements, and the 3 types of cell-cell junctions. In the table include the specific macromolecules that make up these structures, specific properties these structures give to the cell or tissue. Give one example of a tissue or cell whose properties depend on each of these structures.

In Chapter 5, our Rizzo Anatomy & Physiology textbook describes the 4 main tissue types: epithelial, connective, muscle, and nervous. Chapter 5 also gives examples, with detailed diagrams and descriptions, of each tissue type. Choose one example and describe how its size, shape and structure allow it to perform its functions. Also, describe how a weakness or failure in some part of your example's size, shape or structure would harm the tissue's ability to perform its function(s). There should be enough information in Chapter 5 of the Rizzo e-textbook, but if you wish to consult outside scientific sources that is acceptable.

Describe the lines of defense associated with the immune system. Your description should include:

1. Four examples of anatomical barriers

2. Three of the primary mediators of inflammation

3. Names and brief descriptions of the four features that the specific immune system exhibits  

4. Name the two cell types known as lymphocytes and name their origin and maturation locations.   

5. Then, indicate how the cell mediated response (T cells) is activated.

Descriptions of each major types of epidemiologic study:

- randomized controlled trial,

- cohort,

- case-control

Strengths for 2 Strengths

weaknesses 2 weaknesses