Homeostasis & Blood Pressure Maintainence
How do negative feedback mechanisms contribute to homeostasis? What are some examples in terms of temperature regulation and blood pressure maintenance? What would happen if temperature regulation were suddenly controlled by a positive feedback loop?
Why is osmosis important to proper kidney functioning? Include how osmosis is related to nephron physiology. How does the nephron perform filtration, reabsorption and tubular secretion? What are some examples of "water following salt."
In tracing a drop of blood from tissue cells of the left knee to the capillaries of the right arm including the lungs. What are the aspects of the cardiac cycle, keeping track of the left and right sides of the heart, and all the valves through which the blood travels?
*Asthma incidence among children is increasing.* How could you determine the reasons for this increased incidence? Design an experiment to test your idea and state hypothesis, variables, controls, observations and conclusions.
Experiments on young rats suggest that exposure to stress in early life is important if an animal is to develop a well functioning endocrine system and thrive. How does stress stimulate a person's endocrine system? What are the hormones involved in the stress response? How do these hormones enable a person to better mee ...continues
Hemostasis and the Endocrine System
How does the pancreatic endocrine hormones {glucagon and insulin} work antagonistically to maintain homeostasis in the body, during times of feast and times of famine? How is this process related to negative feedback?
Nervous & Musculoskeletal Sytem
Why is the term "action potential" used to describe a nerve impulse? What is the role of sodium ions (Na+) and potassium ions (K+) in generating an action potential. What is a "threshold"?
The sympathetic and parasympathetic nervous systems
What is the body's need for both a sympathetic and a parasympathetic nervous system in relation to homeostasis?
How is the villus the functional unit of the small intestine? What is the structure and function and the enzymes found there. What is the importance of the surface area to the functioning villi? What an approiate way to counsel a friend who is overweight and blames herself for a lack of self-control?
Involving the glycolysis, what is the net gain of ATP? What does "net" mean? For each turn of the Kreb's cycle, how much ATP is produced? How many molecules of CO2 are produced? What is the significance of stripping off high-energy electrons from the pyruvate?
