Physiology Homework Solutions

What is responsible for hyperpolarization?

What is responsible for hyperpolarization in an action potential. Why is it more difficult to initiate an action potential when the membrane is hyperpolarized?

Principles of Respiration

Explain in detail Why PCO2 and pH levels affect respiration more than PO2 levels.

Absorption of glucose, fructose, amino acids, and chylomicrons.

Explain where in or on the VILLI the following are absorbed: Glucose, fructose, amino acids, and chylomicrons. I need to know the exact locations in or on the villi where they are absorbed.

Pepsinogen and trypsinogen

Explain briefly why pepsinogen and trypsinogen are released in the digestive system as zymogens. Please be specific.

Intracellular and Extracellular Fluids are discussed.

I explain in clear layman's terms the effects of the following on intracellular and extracellular fluids: 1. eating a salty meal 2. hemorrhage 3. intravenous isotonic saline solution.

ADH and Angiotensin

Explain in layman's terms the interconnected roles of ADH and angiotensin. PLEASE include a diagram.

Blood calcium ion homeostasis is the focal topic.

This job shows how the body maintains blood calcium ion homeostais.

Seasonal Affective Disorder and Circadian Rhythms

Explain why people in Washington State are often affected with Seasonal affective disorder in the winter using general knowledge of circadian rhythms. And, explain how can Seasonal Affected Disorder can be treated.

Divers and lung capacity

Explain why divers often hyperventilate before diving and why they don't fill their lungs to capacity before taking the plunge. List 3 physiological problems that had to be solved before submarines could operate efficiently under the ocean for long periods.

The body and altitudes are correlated.

Why is it so difficult for the body to live at high altitudes? Give three ways the body adjusts to higher altitudes. Please discuss one.

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