Endorphins and enkephalins
a. are endogenous morphine-like substances.
b. are important in the body's natural analgesic system.
c. block the actions of substance P by binding with opiate receptors.
d. both (a) and (b) above.
e. all of these answers.
E
You might also like to view...
Which of these results from the second meiotic division?
A. Two diploid daughter cells with 46 chromosomes each B. Two haploid daughter cells with 46 haploid chromosomes C. Two diploid daughter cells with 23 chromosomes each D. A single daughter cell with 46 chromosomes, and a polar body with no genetic material E. Two haploid daughter cells with 23 chromosomes each
Michael is 26 years old. He becomes dehydrated after a long run if he has not drunk enough. His infant son Sean, however, becomes dehydrated fairly frequently. This difference in susceptibility to dehydration is because
A. the infant thirst mechanism is underdeveloped. B. adults drink more liquid. C. infants grow rapidly. D. infant kidneys are less able to conserve water.
The larger of the two distal leg bones is the ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is the most distal part of the ulna?
A. Olecranon process B. Trochlear notch C. Head D. Radial notch E. Coronoid process