the correct order would be
sensory receptors in the arteries detect low oxygen levels.
sensory neurons generate an impulse.
the central nervous system relays an impulse to certain brain regions.
the brain sends signals through motor neurons.
isabel's breathing rate increases.
the working of the nervous system can be summarized as:
the receptors receives the stimulus which then send signals to the brain with the of sensory neurons.
for example, sensory receptors in the arteries detect the low oxygen levels after which sensory neurons send the signals to the brain.
the stimulus or information is processed in a specified region of the brain which then sends the signals to the effector organ via motor neurons.
the action or reaction is generated at the effector site such as an increase in the breathing rate of isabel in this case.
in the head or skull
demography is the study of human population. it studies about the size of the population, birth, death, age, immigration, migration,nationality, religion, economic status and education status. wild life ecology is also concerned with the population of wild animals, birds, reptiles and other creatures. it also studies the interaction between two or more species, members of the species , interaction of species with their environment.
the study of human population differ from the study of wildlife ecology to the following reasons:
1. human population can be easily surveyed upon the factors like age, births, death, immigeration and migration. but it is difficult to follow up animals for such factors because some animals are dangerous to human.
2. human populations maintains their territory but wildlife populations generally do not. therefore, evidences of their migration can be unaccountable.