Select the MOST CORRECT answer. In a cardiac myocyte, changes in the permeability of ions can lead to a change in membrane potential. In...

Select the MOST CORRECT answer. An athlete was attempting to improve their performance through doping, the act of taking illegal drugs to increase red blood cell count. Unfortunately, the athlete experienced a reduction of performance instead. Which of the following best explains this outcome?

1.What happens when more than one sperm fertilizes an egg? Do you get a “viable” pregnancy? Why or why not?

2.What is the role of the collecting ducts in maintaining homeostasis

Apply information from Module 5- Cardiovascular System. For your discussion board post, list two risk factors for cardiovascular disease and briefly comment on societal impact. List two lifestyle modifications for prevention of cardiovascular disease. Respond to at least one other student's post and cite your references in APA format.

1.What role do the hormones FSH and LH play in male sexual development

2.Describe how a primordial follicle develops into a Graffian follicle and ovulates, and then what happens to the follicle?

3.Explain how high blood pressure can damage your kidneys

1.Alcohol inhibits the production of ADH. What effect will this have on urine production? What do we call a molecule that has this effect

2.What are the different compartments of the body and how does fluid move between them.

1.How does female hormonal birth control work? If you were to develop a male hormonal birth control, what pathway would you target and why?

2.What happens when more than one sperm fertilizes an egg? Do you get a “viable” pregnancy?   Why or why not

1.List three different molecules that are filtered OUT of the blood by the glomerulus. What do these molecules have in common?

2.What types of molecules are reabsorbed in the proximal convoluted tubule? What is the primary method of reabsorption in the PCT? What ion is involved?

Body Mass = 85.7 kg                                       ISF hydrostatic pressure = 1 mmHg

Hematocrit = 45%                                            ISF osmotic pressure = 0 mmHg

Blood pressure = 117/72 (mmHg)             Arteriole end of capillary hydrostatic pressure = 34 mmHg               

Ejection Fraction = 60%                                  Net Filtration Pressure (arteriole end) = 11 mmHg            

EDV = 140 ml                                                      Net Filtration Pressure (venule end) = -8 mmHg

Cardiac Output = 6.3 L/min                         

1. What is this person’s stroke volume?                                                                                      ___________________
2. What is this person’s end systolic volume?                                                                           ___________________
3. What is this person’s heart rate?                                                                                               ___________________
4. What is this person’s blood colloid osmotic pressure?                                                     ___________________

Explain how the anion gap measurement would differ if acidosis were caused by respiratory versus metabolic illness. Hint: think about what happens to the bicarbonate in each

6- According to the definition of an acid and the definition of a base, will the pH increase, decrease, or remain the same when NaCl is added to pure water? Explain.

7- What is a hydrogen bond? Explain how a hydrogen bond forms.

8- What feature of a soap molecule gives it cleaning ability?

9- What ion is responsible for a) acidic properties and b) basic properties?

10- Explain why a pH of 7 indicates a neutral solution -why not some other number?

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1)What is the functional unit of the kidney

2)What are the two parts of this unit?

3)What are each of these parts primarily responsible for?

4)Why do we need our kidneys to perform their job?

5)Why do we need our kidneys to perform their job?

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8. Identify the preservative: p. 340, 10^th ed. “Other Agents”

a.) _________________________________ to preserve dried fruits and molasses.

b.) _________________________________ used to retard mold in bread.

c.) _________________________________ used to preserve cured meats and some cold cuts.

d.) ___________ was a “wonder chemical” after WWII because it helped 1 billion people lived malaria-free.

b.) An antiseptic containing Hexachlorophene called phisohex was used extensively in hospitals in the past but is now banned. Why? see PUBLIC HEALTH BOX

_______________________________________________________________________________________

c.) What are alkylating agents and why these chemicals can cause cancer? Give an example. ___________________________________________________________________________________

d.) Ethylene oxide is used at a concentration of _________________at __________ (what temperature?) for _____________ (how long/length of time?).  

4. a) Why are bar soaps illegal in many public restrooms?

1.The stratum basale:

a-Is easily shed when you rub your hands together

b-Has a mixture of living and dead cells - mostly dead

c-Contains many blood vessels that nourish the epidermis

d-Contains cells that undergo mitosis to form new epidermal cells

2.Which of the following is not a synovial joint?

a-Ball and socket

b-Hinge

c-Suture

d-Condylar

3.A hinge joint has what kind of movement?

a-Biaxial

b-Uniaxial

c-Multiaxial

d-All are true

4. What does the "mastoid" of sternocleidomastoid tell us?

a-The muscle is used in mastication

b-The muscle attaches to the mastoid process

c-The muscle resembles the mast of a ship

d-The muscle is masstive

5. What is the function of the T tubule?

a-To generate ATP

b-To conduct action potentials toward the sarcoplasmic reticulum

c-To store calcium ions

d-To produce more myofibrils during exercise