49 Questions
What type of system is operating when the response reverses the stimulus?
Negative feedback system
How does a system operate by positive feedback?
By enhancing or intensifying the stimulus
What happens if a component of the body loses its ability to contribute to homeostasis?
Normal balance among all processes is disturbed
What is the result of a severe homeostatic imbalance?
Occurrence of a disorder or disease
Which term refers to subjective changes in body functions that are not apparent to an observer?
Symptoms
What is the main characteristic of organs in the human body?
They consist of two or more different types of tissues
At which level of structural organization do vital organs fall?
Organ level
What is homeostasis primarily focused on?
Maintaining stability in changing external conditions
Which of the following is an example of an external disruption to homeostasis?
Intense heat on a hot summer day
How does the human body respond to disturbances in homeostasis?
Through feedback systems that aim to maintain stability
What is the role of an effector in a feedback system?
Receives output from the control center and produces a response
Which component of a feedback system evaluates the input received from receptors?
Control center
In a feedback system, what role does a receptor play?
Monitors changes in controlled conditions
What characterizes a negative feedback system in a feedback loop?
Reverses a change in controlled condition
How does a positive feedback system differ from a negative feedback system in a feedback loop?
Strengthens or reinforces a change in controlled condition
Which of the following is an example of a physiological sign of disease?
High blood pressure
What organ system plays a crucial role in the maintenance of homeostasis?
Endocrine system
Which condition is a major homeostatic imbalance affecting blood sugar levels?
Diabetes
How do anatomical signs of disease differ from physiological signs?
Anatomical signs involve visible physical changes, while physiological signs involve internal body functions.
In the context of disease, what role do feedback systems play in maintaining homeostasis?
Feedback systems help the body maintain stability by responding to changes.
What is the main purpose of homeostasis in biological systems?
To maintain stability while adjusting to changing external conditions
Which of the following best describes the characteristic of homeostasis?
A dynamic condition where the body's parameters can shift within a narrow range to maintain life
What type of disruptions can affect homeostasis in the human body?
Both external disruptions like physical changes and internal disruptions like changes in blood glucose levels
Which level of structural organization do organs belong to?
Level 4 - Organ level
How is an organ system defined in terms of structure and function?
Related organs with a common function
What type of feedback system reverses a change in a controlled condition?
Negative feedback system
Which body structure monitors changes in a controlled condition and sends input to a control center in a feedback system?
Receptor
What does a positive feedback system tend to do to a change in one of the body’s controlled conditions?
Strengthen or reinforce the change
Which component of a feedback system produces a response that changes the controlled condition?
Effector
Organs are composed of only one type of tissue.
False
Homeostasis is a self-regulating process by which biological systems maintain stability.
True
A vital organ not functioning can never result in death.
False
Cells are composed of water, inorganic ions, and carbon-containing molecules at the tissue level.
False
The chemical level of structural organization consists of subatomic particles like protons, electrons, and neutrons.
True
Homeostasis refers to a state of internal balance maintained by the body, while homeostatic imbalance indicates a disruption in this balance.
True
In a positive feedback system, the response reverses the stimulus.
False
Homeostasis is maintained when body cells function inefficiently.
False
Moderate homeostatic imbalance can lead to death.
False
Disease is a less specific term compared to disorder.
False
Vital organs are structures composed of only one type of tissue.
False
Homeostasis in the human body is a static condition that never changes.
False
Moderate homeostatic imbalance always leads to death.
False
The chemical level of structural organization consists of four sub-levels.
True
Homeostatic imbalances can only occur at the tissue level of structural organization.
False
In homeostasis, cells are primarily composed of inorganic ions like sodium and potassium.
False
In a negative feedback system, the response enhances or intensifies the stimulus.
False
Homeostatic imbalance always leads to the occurrence of a disease.
False
Cells are the smallest level of structural organization in the human body.
False
A fluctuation in maintaining equilibrium within the body is a characteristic of homeostasis.
True
Explore the different levels of structural organization in organisms, from tissue levels to organ system levels. Learn about the functions and characteristics of organs and organ systems.
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