What are the differences and similarities between phasic and tonic contractions? Where are the two most likely to be found?

Thanks

What would happen to the SA node if a chemical blocker was used to reduce transport of Na+ into the pacemaker cells?

**Physiology

6. What features are necessary for the cell to engage in facilitated diffusion rather than simple diffusion? Secondary active transport rather than primary active transport (is this different for symport and antiport? What advantages do we derive by putting these modifications in place?

2. Make a concept map of the cell membrane. Include each of the functions of the cell membrane listed below. Make sure each function is correctly linked to the components of the cell membrane responsible for each function

1. separates intracellular fluid (ICF) from extracellular fluid (ECF)
2. provides permeability barrier
3. contains surface proteins acting as antigens - important for recognition of “self”
4. provides cell communication: receptors and signal transduction pathways for hormones and neurotransmitters
5. contains a variety of adhesion molecules allows anchoring, tissue organization
6. acts as a highly selective filter

7. In mythology, the cosmic man appears grossly swollen and may be seen pictures as a human rain cloud. Propose a mechanism whereby this mythological creature could swell up and fill with water. (It is not going to be true, so you can’t look this up – it’s just for fun to see if you understand how it could work.)

Discuss information technology~ collection, modeling, and surveillance of disease agents.

1. Expound on one of the following disease and the use of technology in disease surveillance:

The flu epidemic, Malaria, Measles, Zika Virus, HIV, Typhoid, or other globally impacting disease. What goals/procedures would you recommend in the event of a global epidemic?

2. What roles do social inequality and absolute poverty have as determinants of health?   What roles does information technology play in global public health? (May need to give examples)

3. What is the role of computers in modeling natural disasters? What is the healthcare professional's responsibility in disasters (natural and human-made) such as Hurricane Katrina and the Deep Horizon oil spill?

Course: Healthcare Automation and Technology

The lymphatic system includes our bodies' defenses against infections. AIDS, Leukemia, many autoimmune disorders, and allergies are all manifestations of a breakdown in the normal functioning of the lymphatic system. Find an online source that helps to explain how these diseases interact with the lymphatic system mechanisms. Provide the link and a brief summary of fewer than 250 words. Then, read at least two classmates' posts. What questions are you still wondering about after reading the summary they posted?

1. _______ corpuscles respond to heavery pressure

2. Skin touch is sensed by ________ receptors

3. Pain in the left arm caused by lack of blood to the heart is atype of _________ pain

4. Relatively thin nerve fibers associated with the sensation of sharp pain

5. The pain supresing mor[hine like substance in our body known as the natural pain control

6. List two types of headaches

7. Define sensory adaptation

Average blood velocity is 11cm/s in the human ascending aorta. The average diameter of the aorta is 2.1cm.

a) How much blood passes through the aorta each day in gallons?

b) How does this compare to the total quantity of blood you have in your body?

c) If 45% of the aorta becomes clogged, what is the new blood velocity?

serous membrane: which one is a thicker membrane and why? (pericardium, peritoneum or pleura)

1. My 8-month old son has a skin rash. The doctor prescribed hydrocortisone which is an anti-inflammatory drug that acts to stabilize the lysosome membranes. Explain why this effect reduces cell damage and inflammation. Why is this steroid hormone packaged in an oily based cream and applied topically (on the skin)?
2. An individual arrives at the hospital with a very rare disease. This disease is typified by the destruction of Ribosomes in the cells. Describe the immediate and long-term effects this would have on her physiology?
3. Three weeks ago, we were in the middle of a record heat wave. A number of elderly people visited their health care providers complaining of feel terrible. Most of the patients had cool and clammy skin and low blood pressure. What is their problem? What can be done to reverse it?
4. You are an athlete and running for 5 miles this morning. The new coaching intern was asked to fill the water bottles with Gatorade. He misread the printed instructions and filled them with water. Is this an acceptable predicament or not? Briefly explain why

Is it possible to create an osmotic disequilibrium between the extracellular and intracellular compartments? Explain.

What is rickets? What causes it? How does it affect the body?

1. Using as many appropriate anatomical terms as apply, write sentences that describe the positional relationship from a. your left ankle to your left foot b. your right elbow to your nose c. the positional relationship from your mouth to your pinky finger on your right hand.

2. Using as many appropriate anatomical terms as apply, describe the position of the heart in the body and its position relative to the right kidney.

6. The total lung capacity of a patient is 5.9 liters. Find the patient’s inspiratory reserve volume if the patient’s vital capacity was 4.1 liters, the tidal volume was 550 ml, and the expiratory reserve volume was 1.6 liters.

What surface of the thyroid gland is the parathyroid gland located?