Podcast
Questions and Answers
Which one of the following is not a property of regulation by hormone?
Which one of the following is not a property of regulation by hormone?
What decreases in length during the contraction of a skeletal muscle fiber?
What decreases in length during the contraction of a skeletal muscle fiber?
Which event is associated with the second heart sound?
Which event is associated with the second heart sound?
The resting potential of a myelinated nerve fiber is primarily dependent on which ion?
The resting potential of a myelinated nerve fiber is primarily dependent on which ion?
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Which term refers to the existence of a stable internal environment?
Which term refers to the existence of a stable internal environment?
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Which one is the basic substance of excitation-contraction coupling?
Which one is the basic substance of excitation-contraction coupling?
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Study Notes
Regulation by Hormone
- Regulation by hormone is not characterized by being accurate in action.
Homeostasis
- Homeostasis refers to the existence of a stable internal environment.
Skeletal Muscle Contraction
- During the contraction of a skeletal muscle fiber, the I band of the sarcomere decreases in length.
Excitation-Contraction Coupling
- The basic substance of excitation-contraction coupling is Ca2+.
Resting Potential of a Myelinated Nerve Fiber
- The resting potential of a myelinated nerve fiber is primarily dependent on the concentration gradient of K+ ions.
Diffusion
- Diffusion depends upon the random motion of molecules.
- Diffusion results in net movement of molecules from regions of high concentration to regions of low concentration.
Heart Sounds
- The second heart sound is associated with the closing of the aortic valve.
- The second heart sound is also associated with the closing of the semilunar valves.
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Description
This quiz covers key concepts in human physiology, including hormone regulation and homeostasis. Test your knowledge of physiological processes and mechanisms.
