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AshleighJ
Physiology Wks 1-7
| Question | Answer |
|---|---|
| Local control or _____ , intrinsic mechanisms often make use of chemical signals. | autoregulation |
| The body naturally changes some set points to different values at different times of the day. These daily cycles are called: | circadian cycles |
| The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as: | organs that are directly influenced by physiological variables or mechanisms |
| Protein substance with no DNA or RNA and thought to be the cause of Mad Cow disease? | Prion |
| If the secretion of oxytocin during childbirth operated as a negitive- feedback control loop, what effect would it have on the uterine contraction? | oxytocin would inhibit the uterine contractions |
| Which lipid is part of vitamin D? | Steroids |
| Diffusion of particles through a membrane by means of a carrier molecule is called: | facilitated diffusion |
| How many ions are taken out of the sodium and potassium pump? | Three soduim ions are taken outof the cell |
| The physical process by which water and solute move through a membrane when a hydrostatic pressure gradient exists across the membrane is the process of: | filtration |
| Vitamins that are absorbed through the skin are: | Vitamins A, K, and D |
| Some synovial joints contain a closed pillow-like structure called a: | bursa |
| The action potential seems to “leap” from node to node along a myelinated fiber. This type of impulse regeneration is called __________ conduction. | action potential |
| What mechanism quickly terminates the action of a neurotransmitter once it binds to its postsynaptic receptor? | Neurotransmitter molecules are metabolized into inactive compounds, Neurotransmitter molecules are transported back into synaptic knobs, and Neurotransmitter molecules are transported into nearby glial cells. |
| The mechanisms that produce and maintain the resting membrane potential do so by producing a | slight excess of positive ions on the outer surface of the plasma membrane. |
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Ashj27
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