homeostasis Flashcards
What is homeostasis?
Homeostasis is the process by which biological systems maintain a stable internal environment despite external changes.
Name one key component involved in homeostasis.
Receptors, effectors, or control centers.
What are the two main types of feedback in homeostasis?
Negative feedback and positive feedback.
Fill in the blank: Negative feedback loops aim to __________ changes in a system.
counteract
Give an example of a negative feedback mechanism.
Regulation of blood glucose levels or temperature control.
True or False: Positive feedback loops enhance or amplify changes in a system.
True
What is an example of a positive feedback mechanism?
Childbirth or blood clotting.
Which pathway involves the body detecting a change and initiating a response to reverse that change?
Negative feedback pathway.
What role do effectors play in homeostasis?
Effectors carry out responses to restore balance in the system.
Fill in the blank: The __________ detects changes in the environment during homeostasis.
receptor
What is the main difference between negative and positive feedback mechanisms?
Negative feedback reduces the effect of a stimulus, while positive feedback increases it.
Multiple Choice: Which of the following is NOT a component of a feedback loop? (A) Receptor (B) Effector (C) Stimulus (D) Hormone
D) Hormone
Multiple Choice: Which of the following is an example of negative feedback? (A) Blood pressure regulation (B) Oxytocin release during childbirth (C) Fruit ripening (D) Lactation
A) Blood pressure regulation
What physiological process is an example of positive feedback?
The release of oxytocin during labor.
Fill in the blank: Homeostasis is crucial for maintaining __________ in the body.
equilibrium
Which system is primarily responsible for maintaining homeostasis?
Nervous system and endocrine system.
What is the term for the state of balance in biological systems?
Equilibrium
Multiple Choice: Which of the following is a characteristic of negative feedback? (A) Amplifies change (B) Stabilizes the system (C) Occurs only in humans (D) None of the above
B) Stabilizes the system
