3. Which of the following is not correct regarding a prepotential:

1. it is a spontaneous depolarization
2. it occurs as the result of the influx of Ca2+ via L-type channels
3. it is due to "funny" current
4. the # of prepotentials per minute = HR

4. What would happen if you injected a drug into the papillary muscle that caused it to relax during systole (ventricular contraction)?

1. blood would flow from the atria into the ventricles
2. the tension of the chordae tendineae would increase
3. the ventricles would relax
4. the seal of the AV valves would be compromised

Describe how acyclovir works, and what virus(es) does it work against and How toxic it is?

A woman with average height, and type A- blood, and a man with type B+ blood and achondroplastic dwarfism, have a daughter with type O- blood, average height and cystic fibrosis. Write the genotype of the mother, starting with ABO, Rh, height, cystic fibrosis, and sex. Be sure to follow the nomenclature rules. (For example: for a blue-eyed person with hairless knuckles, you would write b/b, kn/kn. For a brown-eyed person with hairy knuckles, write B/B, Kn/Kn, if the person is known to be homozygous; B/b, Kn/kn, if the person is known to be heterozygous; or B/?, Kn/? if the exact genotype of the person is not clearly known. Note the use of punctuation.)

Hi,

How does hyperglycemia result in osmotic diuresis?

Can I have a step-by-step process. Thank you!

Which of the following is NOT an action of brachioradialis?

• A. Elbow flexion

• B. Elbow extension

• C. Supination

• D. Pronation

Recall the chemiosomotic synthesis of ATP occurring inside the mitochondria. Would you expect to measure an electrical potential across the inner membrane of the mitochondria when chemiosmosis is active? Why or why not? If so, which compartment in the mitochondria would have a more positive charge?

There are two significant evolutionary developments which distinguish hominins from their other primate "cousins": encephalization and habitual bipedalism From an evolutionary perspective which came first and when did the other begin truly to evolve? Was one development completed before the other began or did they at some point co-evolve? What evidence do we have for either the completion of one and the start of the other or for their co-evolution?