The hepatic portal vein is formed by the union of the splenic vein and the
A. superior mesenteric vein.
B. inferior mesenteric vein.
C. hepatic vein.
D. renal vein.
E. gastric vein.
A
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Of the different sources of genetic variability which one causes the variation in the combinations of homologs from paternal and maternal linage found within a haploid cell?
A) independent assortment B) crossing over C) random fertilization D) mutation
Which of the following is not true of heat production and body temperature regulation in a person?
A. The higher the surface area to volume ratio in a person, the less heat escapes into the environment. B. The greater the number of cells that a person has, the more heat is produced by the person. C. People and other warm-blooded animals must have proper methods of heat production and heat loss to keep their body temperature at its homeostatic level. D. Most heat loss occurs through the skin surface. E. All of these are true of heat production and body temperature regulation in warm-blooded animals.
The cranial cavity contains the brain.
Answer the following statement true (T) or false (F)
Briefly describe the difference between tonic and phasic receptors, and illustrate this difference by sketching graphs showing any type of stimulus (as a rectangular wave), the receptor potentials generated by each type of receptor, and the resulting action potentials in the neurons that respond to each type of receptor. You do not need to put numbers on your axes; rather you are to demonstrate
you understand the relative differences in the responses. What will be an ideal response?