Regardless of the event being regulated, the two main organ systems responsible for monitoring and controlling homeostasis in the body are O nervous and endocrine O cardiovascular and endocrine cardiovascular and respiratory nervous and cardiovascular &

An example of a positive feedback mechanism is blood clotting in which certain clotting factors active other factors until a plug forms to stop bleeding. Is this process involved in homeostasis? no, positive feedback mechanisms cannot regulate homeostasis no, it is not a negative feedback mechanism no, it does not fit into a classic "push-pull" action no, because it does not result in restoring blood volume O yes, because it is part of a bigger negative feedback mechanism to maintain optimal levels of blood volume. E O O O O C

LIVE V 18:02 RC raw Which factor will most likely play a role in decreasing the number of neural cells in the brain as we age? Multiple Choice accumulation of free radicals in the neural cells a reduction in the blood flow to the brain, due to narrowing of blood vessels a decrease in testosterone in males and estrogen in females

Which of the following is associated with elevated parasympathetic activity? shifting blood flow away from gastrointestinal tract enhanced absorption of nutrients increased heart rate increased contractile force of the heart both Cand D

Describe how our sensory, nervous, and endocrine systems would function in a flight and fight situation, include the specific organs, cells, tissue and molecules involvement and process

During a sympathetic nervous system response to an event, your heart rate increases, indicating the part of the heart responsible for controlling heart rate (the sinoatrial node) is innervated by sympathetic nerves. The SA node is also responsive to epinephrine,a hormone secreted by the adrenal medulla. Explain why the onset of the effect of the hormone is so much slower than the onset of the effect from sympathetic nerve stimulation and yet the effect of the hormone lasts much longer than the effect of nerve stimulation.

The maintenance of homeostasis is of major importance to all organ systems in the body and the overall survival of the individual. Explain how homeostasis is the maintenance of a dynamic range of environmental qualities rather than holding the internal environment at a set point. What would be wrong with a set point (say for body temperature) rather than a working range of temperatures? The endocrine system is closely tied to homeostasis functioning. Give two examples of hormones (including their glands of origin and action) that play major roles in homeostatic processes in the body. What happens if these hormones are disrupted in their actions? Also, look at how we adapt to survival in the outside world. Discuss how maintaining homeostasis gives us greater freedom of activity from dependence upon changes in the external environment. What happens during extremes that force our bodies out of homeostatic bounds? Give specific examples. Why is the maintenance of homeostasis especially…

body temperature falls normal body temperature Feedback: body temperature falls Feedback: body temperature rises body temperature rises vasoconstriction Response: Vasodilation Normal body temperature FACY AS SPARENT O ICH AE EDUATE ATIO Response: Vasoconstriction vasodilation Stimulus: Increase in Body Temperature Stimulus: Decrease in Body Temperature UN

Unlike real life, pandemics in the movies often involve people turning into zombies - in which case many of us would need to run for our lives. Running for your life from zombies requires you to sense and respond to danger. Describe how your sensory, nervous, and endocrine systems would function together to help you survive a zombie apocalypse, including the specific organs, cells, tissues, molecules and/or processes involved.

There are two major coordinate all of the other organ systems in the human body. systems in the body that sensory hormones The system is comprised of the brain, spinal cord, and ions associated nervous The action of the nervous system allows the body to respond to both external and internal control nerves In addition, the the body's other systems, like maintenance of the male and female reproductive organs. system also regulates the functions of urinary stimuli This system's response, however, is slower due to the use of endocrine