1.
We need organ systems to maintain homeostasis.
Explanation
The question states that we need "organ systems" to maintain homeostasis. The answer options provided are "2", "two", and "Two". Both "2" and "two" are numerical representations of the number 2, while "Two" is the written form of the number 2. Since the question is asking for a numerical representation, the correct answer is either "2" or "two".
2.
Which two organ systems do we need to maintain homeostasis?
Include "and" between your answers.
Explanation
The correct answer is the nervous system and the endocrine system. These two organ systems work together to maintain homeostasis in the body. The nervous system uses electrical signals to quickly transmit messages between different parts of the body, while the endocrine system uses hormones to regulate various bodily functions. Together, they help to regulate temperature, blood pressure, heart rate, and other important physiological processes to keep the body in balance.
3.
Homeostasis is the ability of the body to maintain a ______ ________ ___________.
(three words)
Explanation
Homeostasis refers to the body's ability to maintain a stable internal environment. This means that the body can regulate and balance various physiological processes such as temperature, pH levels, and blood sugar levels to ensure optimal functioning. By maintaining a stable internal environment, the body can adapt to changes in the external environment and maintain overall health and well-being.
4.
Sweating is a form of homeostasis.
Correct Answer
A. True
Explanation
Sweating is a form of homeostasis because it helps regulate body temperature. When the body gets too hot, sweat glands produce sweat, which then evaporates from the skin's surface, cooling the body down. This process helps maintain a stable internal temperature, which is a key aspect of homeostasis.
5.
Homeostasis is achieved by a ________ _______ mechanism.
(two words)
Correct Answer
negative feedback
Explanation
Homeostasis is a process in which the body maintains a stable internal environment. It is achieved through a mechanism known as negative feedback. Negative feedback is a regulatory mechanism that works to counteract any changes from the body's set point. It detects any deviations from the desired state and activates responses to bring the body back to equilibrium. This helps to maintain stability and balance within the body's systems.
6.
Negative feedback occurs when the body is ___________.
(one word)
Correct Answer
threatened
distressed
Explanation
Negative feedback occurs when the body is threatened or distressed. In both situations, the body perceives a potential danger or harm, triggering a stress response. This response involves the release of stress hormones like cortisol, which help the body prepare for fight or flight. Negative feedback mechanisms are activated to restore homeostasis and counteract the stress response. These mechanisms work to regulate various physiological processes and bring the body back to a balanced state.
7.
Would breast-feeding be a negative feedback mechanism?
Correct Answer
no
Explanation
Breast-feeding is not a negative feedback mechanism because it does not involve the regulation or control of a physiological process in response to a change in a variable. Negative feedback mechanisms typically work to maintain homeostasis by counteracting any deviations from a set point. Breast-feeding is a natural process where a mother provides nourishment to her baby through her breast milk, which is not regulated by feedback mechanisms.
8.
When we are in homeostasis, we are ________.
Correct Answer
D. Healthy, in our normal state.
Explanation
When we are in homeostasis, it means that our body is maintaining a stable internal environment, with all physiological processes functioning properly. This includes maintaining a stable body temperature, blood pressure, pH levels, and other vital functions. Being in homeostasis indicates that we are healthy and in our normal state, as our body is able to regulate and balance its internal conditions effectively.