16. Trachea is not a part of the circulatory system
18. Milk is pasteurized in order to decrease the number of microorganisms
19. The statement “Sexual reproduction leads to the possibility of variation in the next generation” is true
20. Infectious diseases are caused by microscopic organisms that can be transmitted from one organism to another
21. The number 23 represents chromosomes
Complete question:
Question: What is not one of the roles of the parasympathetic nervous system?
a) increases digestive functions
b) maintains resting heart rate
c) stimulating urination
d) controls the diameter of blood vessels
Answer:
d) controls the diameter of blood vessels
Explanation:
The activated parasympathetic nervous system is mainly associated with the rest and digest activities. This division of the autonomic nervous system triggers the digestive glands to release their secretions and stimulate the contractions of smooth muscles of the digestive tract to upregulate the processes of digestion and absorption of nutrients. In this way, the parasympathetic nervous system restores and conserves the energy of the body. It has no effect on the diameter of blood vessels.
The sympathetic nervous system triggers constriction of blood vessels that supply blood to kidneys and digestive tract during emergency conditions. It also dilates the blood vessels that supply blood to skeletal muscles, cardiac muscles and liver to facilitate increased blood supply to these tissues.
<span>The answer is letter b. Human activities have polluted most of the fresh water supply that is fit for consumption. Letter b. explains the reason behind the water shortage which we are facing today, which is human activities have polluted most of the fresh water supply that is fit for consumption.</span>
Hey, I want to help you. Please put the question in order so I can see which option falls where.
<span>Certain enzymes and other chemicals including antibodies are created by immune cells. The white blood cells surround the bacteria or other infectious material and release the chemicals and enzymes into the bloodstream.</span>