“12th Class Biology Chapter 15 Quiz: Homeostasis” deals with the most essential biological process of maintenance of internal stability in an organism. Homeostasis is indispensable for proper functioning of cells and survival as it tends to keep various physiological parameters like temperature, pH, and electrolyte balance within the narrow range. This chapter describes the mechanisms of homeostasis, its significance in various systems, and how the body responds to changes in the environment. Polish your concepts with our MDCAT Quiz and free flashcards to excel in this topic.
Mechanisms of Homeostasis
Homeostasis involves a series of complicated processes that control the internal environment of an organism. It is dependent on feedback mechanisms to establish stability. The primary feedback mechanisms include negative feedback, where changes are opposed to return to a set point, and positive feedback, where changes are amplified to complete a specific process.
Homeostasis in Different Systems
Various organ systems contribute to the maintenance of homeostasis. The nervous system is important in detecting changes in both the internal and external environment and in sending signals to the appropriate effectors to restore balance. The endocrine system helps regulate long-term homeostasis through the release of hormones that affect, for example, metabolism, growth, and water balance.
MDCAT Quiz: Homeostasis
Test your knowledge with our MDCAT Quiz on homeostasis. The quiz covers major topics including the regulation of body temperature, blood sugar levels, and the functions of different organs and systems in maintaining homeostasis. It’s designed to help you prepare for related questions in your MDCAT exams and strengthen your understanding of this essential concept.
- Test Name: 12th Class Biology Chapter 15 Quiz
- Type: Quiz Test
- Total Questions: 30
- Total Marks: 30
- Time: 30 minutes
Note: Answer of the questions will change randomly each time you start the test, once you are finished, click the View Results button.
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Free Flashcards for Homeostasis
Use free flashcards to review key concepts related to homeostasis. These flashcards provide quick insights into feedback mechanisms, the role of hormones, and how different systems contribute to internal stability. They are useful for revising key concepts and ensuring solid retention of the material.
Which hormone is responsible for regulating calcium and phosphate levels in the blood and bones?
What is the role of atrial natriuretic peptide (ANP) in the body?
Which part of the brain controls hormone secretion by the pituitary gland?
What is the primary function of cortisol in the body?
Which gland is responsible for producing growth hormone, which stimulates growth and development?
What is the role of erythropoietin in the body?
Which hormone is responsible for promoting sodium reabsorption and potassium excretion in the kidneys?
What is the primary function of the urinary system in homeostasis?
Which part of the brain regulates hunger and satiety signals?
What is the role of leptin in the body?
Which hormone is responsible for stimulating hunger and regulating appetite?
What is the primary function of the cardiovascular system in homeostasis?
Which gland is responsible for producing melatonin, a hormone involved in regulating sleep-wake cycles?
What is the role of thyroid hormone in the body?
Which hormone regulates water reabsorption in the kidneys, thus controlling blood volume and pressure?
What is the primary function of the digestive system in homeostasis?
Which part of the brain regulates body temperature by initiating sweating or shivering responses?
What is the role of parathyroid hormone (PTH) in the body?
Which hormone is responsible for promoting glucose uptake by cells, thus lowering blood glucose levels?
What is the primary function of the integumentary system in homeostasis?
Which gland is responsible for producing adrenaline, a hormone involved in the fight or flight response?
What is the role of antidiuretic hormone (ADH) in the body?
Which hormone regulates blood calcium levels by promoting calcium deposition in bones?
What is the primary function of the endocrine system in homeostasis?
Which part of the brain controls thirst and regulates water balance in the body?
What is the role of glucagon in the body?
Which hormone regulates blood pressure by increasing sodium reabsorption and potassium excretion in the kidneys?
What is the primary role of the respiratory system in homeostasis?
Which hormone is released by the kidneys to stimulate red blood cell production in response to low oxygen levels?
What is the primary function of insulin in the body?
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