Summarize the four gas laws.
What will be an ideal response?
1. The total pressure of a mixture of gases is the sum of the pressures of the individual gases (Dalton's law).
2. Gases, singly or in a mixture, move from areas of higher pressure to areas of lower pressure.
3. If the volume of a container of gas changes, the pressure of the gas will change in an inverse manner (Boyle's law).
4. The pressure and volume of a container of gas are directly related to the temperature of the gas and the number of molecules in the container: PV = nRT (the ideal gas law).
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Age-related changes in the heart include
A) decreased pressures in the great vessels. B) reduction in the elasticity of the fibrous skeleton. C) increased size of coronary vessels. D) increased maximum cardiac output. E) None of the answers are correct.
All ANS preganglionic axons release _____________ as their neurotransmitter
Fill in the blank with correct word.
In a person who is color blind, which of the following would you most expect to see?
A) a loss of functions in the rods of their retina B) an inability to regenerate 11-cis-retinal after bleaching C) absence of green or red cones in their foveae D) a loss of their peripheral vision
The hormone _____ is secreted by the kidney in response to reduced oxygen delivery
a. renin b. angiotensin c. erythropoietin d. aldosterone e. thrombopoietin.