1. During a stressful or threatening situation, which of the following is the best description of how the nervous systems in you
r body would respond? The parasympathetic nervous system brings the system back to normal after the sympathetic nervous systems signals to release adrenaline.
The parasympathetic nervous system senses the danger and the sympathetic nervous system responds by releasing adrenaline.
The parasympathetic nervous system releases adrenaline and the sympathetic nervous systems calms the system back down.
2. Insulin and glucagon are hormones that affect blood sugar levels. The diagram below shows the feedback system used by the human body to increase and decrease blood sugar levels. Which of the following is NOT true about this system?
It is a positive feedback loop.
It is used to maintain blood sugar levels.
It is used to bring about homeostasis.
It is regulated by hormones in the pancreas.
3. Jesi is on vacation and visited a seafood restaurant to eat a shrimp dinner. About thirty minutes after eating, she begins to feel ill and her stomach is rumbling. Shortly after, she begins to vomit. Jesi's body is experiencing a reaction to an ________ stimulus.
response
biological clock
external
internal
4.
Which of the following responses would be best to help maintain homeostasis when a person's body temperature drops below 98 degrees F?
Answer: The salt dried and dehydrated him even further.
Explanation: When we become dehydrated, the sodium concentration in the body is already elevated. Adding salt only aggravates the condition by forcing the kidneys to excrete more water in order to eliminate the extra salt.
