Anatomy & Physiology: Homeostasis

2.

The focus of physiology is

Explanation
Physiology is the branch of biology that deals with the functions and processes of living organisms. It focuses on understanding how different systems and organs in the body work together to maintain homeostasis and carry out various functions. Therefore, the correct answer "function" accurately reflects the main area of interest and study in physiology.

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5

3.

Describe how the body is organized from smallest to largest.

4.

Homeostasis can be defined as the existence and maintenance of a relatively constant enviroment within the body.

True
False

Correct Answer

A. True

Explanation

Homeostasis refers to the body's ability to maintain a stable internal environment despite external changes. It involves various physiological processes that regulate temperature, pH levels, blood pressure, and other factors within a narrow range. This constant environment is crucial for the proper functioning of cells, tissues, and organs. Therefore, the given statement is true as it accurately defines homeostasis as the existence and maintenance of a relatively constant environment within the body.

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3

5.

What are some components of extracellular fluid?

Volume
Color
Concentration
Pressure
Salidity
Temperature

Correct Answer(s)

A. Volume
A. Concentration
A. Salidity
A. Temperature

Explanation

Extracellular fluid refers to the fluid outside of cells in the body. It plays a crucial role in maintaining the balance of various substances and providing a medium for cellular activities. The components mentioned in the answer, namely volume, concentration, salidity, and temperature, are all important factors that can vary in extracellular fluid. Volume refers to the amount of fluid present, concentration refers to the relative amount of solutes dissolved in the fluid, salidity refers to the salt content, and temperature refers to the degree of heat. These components can fluctuate depending on various physiological and environmental factors.

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6.

The components of extracellular fluid are also known as

Correct Answer(s)
variables

7.

To stay around the normal value is known as the ...

Median
Integrating center
Set point
Negative feedback

Correct Answer

A. Set point

Explanation

The term "set point" refers to the desired or target value that a system aims to maintain or achieve. In the context of the given question, staying around the normal value implies that there is a specific value that the system is trying to maintain, which is known as the set point. This term is commonly used in control systems where feedback mechanisms are employed to keep a variable within a desired range.

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8.

Components generally stay at precisely one value.

True
False

Correct Answer

A. False

Explanation

Components generally do not stay at precisely one value. In electronic circuits, components such as resistors, capacitors, and inductors can have varying values depending on the circuit conditions. Additionally, in programming, variables can change their values during the execution of a program. Therefore, it is not accurate to say that components always stay at precisely one value.

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9.

Negative Feedback maintains homeostasis. The ______ senses a disturbance in homeostasis. Then the signal is sent to the _, which sends a message to the ______ that will make the change and return the body back to its set point. [separate each answer with a comma]

Correct Answer
receptor, control center, effector

Explanation
separate each answer with a comma

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3

10.

An example of negative feedback is temperature rising or falling in the body due to exercise. When temperature rises above our set point (98.6) what actions and effects take place in the body to return the body back to homeostasis? Check all that apply.

Blood flow decreases
Blood flow increases
Sweating increases
Temperature increases
Shivering increases
Temperature declines
Body cools
Body heat is conserved

Correct Answer(s)

A. Blood flow increases
A. Sweating increases
A. Temperature declines
A. Body cools

Explanation

When the body temperature rises above the set point, the body initiates several actions to return to homeostasis. One of these actions is increasing blood flow, which helps to dissipate heat from the body. Sweating also increases, as it helps to cool the body down through evaporation. Additionally, the temperature declines as the body cools down, and this is accompanied by a decrease in body heat.

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11.

Negative feedback involves a constant back and forth in reactions to go in a straight line overall.

True
False

Correct Answer

A. True

Explanation

Negative feedback involves a constant back and forth in reactions, which helps maintain stability in a system. It works by sensing any deviations from a desired state and then applying corrective measures to bring the system back to its original state. This continuous loop of monitoring and adjusting helps to keep the system on track and prevents it from deviating too far from the desired outcome. Therefore, the statement that negative feedback involves a constant back and forth in reactions to go in a straight line overall is true.

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12.

Positive Feedback is _______________.

Always rising and falling
A negation of the the problem
Self-amplifying
(a) and (b)
All of the above

Correct Answer

A. Self-amplifying

Explanation

Positive feedback is self-amplifying because it refers to a process in which the output of a system enhances or reinforces the input, leading to an increase in the initial signal or condition. This means that positive feedback causes a continuous cycle of growth or amplification, rather than a balance or negation of the problem. Therefore, the correct answer is self-amplifying.

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13.

Anatomy & Physiology: Homeostasis

The focus of anatomy is

Quiz Preview

The focus of physiology is

Describe how the body is organized from smallest to largest.

Homeostasis can be defined as the existence and maintenance of a relatively constant enviroment within the body.

What are some components of extracellular fluid?

The components of extracellular fluid are also known as

To stay around the normal value is known as the ...

Components generally stay at precisely one value.

Negative Feedback maintains homeostasis. The ______ senses a disturbance in homeostasis. Then the signal is sent to the _, which sends a message to the ______ that will make the change and return the body back to its set point. [separate each answer with a comma]

An example of negative feedback is temperature rising or falling in the body due to exercise. When temperature rises above our set point (98.6) what actions and effects take place in the body to return the body back to homeostasis? Check all that apply.

Negative feedback involves a constant back and forth in reactions to go in a straight line overall.

Positive Feedback is _______________.

Give an example of Positive Feedback and explain how it is self-amplifying.

Anatomy & Physiology: Homeostasis

The focus of anatomy is

Quiz Preview

The focus of physiology is

Describe how the body is organized from smallest to largest.

Homeostasis can be defined as the existence and maintenance of a relatively constant enviroment within the body.

What are some components of extracellular fluid?

The components of extracellular fluid are also known as

To stay around the normal value is known as the ...

Components generally stay at precisely one value.

Negative Feedback maintains homeostasis. The ______________ senses a disturbance in homeostasis. Then the signal is sent to the _______________, which sends a message to the ____________ that will make the change and return the body back to its set point. [separate each answer with a comma]

An example of negative feedback is temperature rising or falling in the body due to exercise. When temperature rises above our set point (98.6) what actions and effects take place in the body to return the body back to homeostasis? Check all that apply.

Negative feedback involves a constant back and forth in reactions to go in a straight line overall.

Positive Feedback is _______________.

Give an example of Positive Feedback and explain how it is self-amplifying.

Negative Feedback maintains homeostasis. The ______ senses a disturbance in homeostasis. Then the signal is sent to the _, which sends a message to the ______ that will make the change and return the body back to its set point. [separate each answer with a comma]