A. Stimulus, effector, efferent pathway, integrating center, afferent pathway, r

Question

A. Stimulus, effector, efferent pathway, integrating center, afferent pathway, receptor. B. Stimulus, receptor, efferent pathway, integrating center, afferent pathway, effector. C. Stimulus, receptor, afferent pathway, integrating center, efferent pathway, effector. D. Stimulus, effector, afferent pathway, integrating center, efferent pathway, receptor. E. Effector, efferent pathway, integrating center, afferent pathway, receptor, stimulus. 11. Which one of the following is the correct sequence for a regulatory reflex arc? wo receptors X and Y, can bind the same signaling molecule but the concentration of the signal molecules required to reach 50 Y than for X. Therefore the receptors have the same A. specificity, affinity B. specificity, saturation C. affinity, specificity D. affinity, competition E. competition, affinity 12. T percent saturation is twice as great for receptor but different 13. Fick's law of diffusion states that the rate of diffusion across a membrane is A. proportional to concentration gradient, surface area, and membrane permeability B. proportional to membrane thickness and surface area C. proportional to membrane thickness and surface area but inversely proportional to concentration gradient D. proportional to membrane permeability, but inversely proportional to concentration gradient and surface area 14. Why do solutions for injection or infusion into people with low blood volume normally contain 150 mMNaCl? A. This is a hypotonic solution, which will cause water movement into dehydrated blood cells. B. This is an isotonic solution, and the water in it will follow Na and Cl into the the intracellular fluid compartment. C. This is a hypertonic solution, which will raise the blood volume and pressure more rapidly than an isotonic solution would D. This is an isotonic solution, and NaCl will keep the added volume in the extracellula fluid compartment. E. NaCI are penetrating solutes, which will get them more quickly into blood cells to increase their volume.

Explanation / Answer

11, Cis the right answer

Regulatory reflex are neural pathways which controls reflex, which carries sensory infirmation from receptor to the spinal cord and response generated by the spinal cord to the effector cells

12, C is the right answer

Affinity is a phylogenetic relation ship and specificity is the cange in behaviour and biochemical variation

13 A is the right answer

Ficks law includes the calculation of rate of diffusion which is directly prportional to the difference in concentration and inversely proportional to the membrane thickness

14 D is the right answerIsotonic solutions which keeps the added volume in the extracellular fluid compartments

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