Answer:
Option C, Parasympathetic nervous system stimulation resulting in airway constriction
Explanation:
Complete Question
When a client with a history of asthma takes a walk outside on a windy day with high pollen counts, she may experience an asthma attack, resulting in an increase in respiration rate and wheezing. The body's response is likely related to which pathophysiological principle?
Select one:
a. Influx of macrophages to wall of the pollen, thereby stopping the attack
b. Release of catecholamines causing blood vessel constriction
c. Parasympathetic nervous system stimulation resulting in airway constriction
d. Inhibition of glandular secretions, which causes build up of mucus in the lungs
Solution
The parasympathetic nervous system consists of cranial and sacral spinal nerves. It is responsible for doing the work of sympathetic system thereby decreasing the rate of respiration and heart. During windy climate when pollen grains are in excess, the rate of respiration needs to be higher in order to get sufficient supply of oxygen. But due to activation of parasympathetic nervous system the body tries to preserve its energy by decreasing the rate of various bodily functions and
Hence, option C is correct
I believe the correct answer is B
Answer:
I think it's sedimentary rock
OPTIONS:
a. Bear populations would decline. b. Riparian vegetation would decline. c. Elk populations would decline.
Answer:
c. Elk populations would decline.
Explanation:
The gray wolf can be regarded as a keystone predatory species. The absence or decrease of the population of a keystone predator in an ecosystem largely has a negative impact on the balance of the ecosystem, as well as the population of other organisms in that ecosystem.
In the Yellowstone ecosystem, Elk population is controlled by the gray wolf, as they are hunted down by the gray wolf. As stated in the question, these elks that are being hunted by gray wolf, their carcasses serve as sources of food for the ravens, bears, and the eagles. This means, the presence of wolf in the ecosystem would make enough food available for these animals as their population increases.
What to be expected as the gray wolf is returned is that, the population of elk would decline, since gray wolf would hunt them down. Also, since elk population feed heavily on riparian vegetation, these vegetation would increase rather than decline.
