Chemical Coordination and Integration — Class 11 Biology NCERT Solutions (Free)
Free step-by-step NCERT solutions for Class 11 Biology chapter "Chemical Coordination and Integration" — 8 important questions with detailed answers for CBSE board exam preparation.
TL;DR: Free step-by-step NCERT solutions for Class 11 Biology chapter "Chemical Coordination and Integration" — 8 important questions with detailed answers f…
By Syllab.in · Updated
Key Questions Covered:
- Define hormones. What are their characteristics?
- What is the hypothalamic-pituitary axis? Explain with an example.
- Name the hormones secreted by the anterior pituitary and their functions.
- + 5 more questions in the full chapter
Solutions Summary:
| Question | Status |
|---|---|
| Define hormones. What are their characteristics? | ✓ Solved |
| What is the hypothalamic-pituitary axis? Explain with an … | ✓ Solved |
| Name the hormones secreted by the anterior pituitary and … | ✓ Solved |
Showing 3 of 8 questions
Q1: Define hormones. What are their characteristics?
Hormones are chemical messengers secreted by endocrine glands into bloodstream.
Characteristics:
- Secreted in small amounts; highly potent
- Act on distant target cells via specific receptors
- Effects are long-lasting and slow compared to nerves
- Coordinate and regulate physiological processes
- ...
Q2: What is the hypothalamic-pituitary axis? Explain with an example.
Hypothalamic-pituitary axis controls major endocrine functions via feedback loops.
Structure:
- Hypothalamus secretes releasing hormones to anterior pituitary
- Anterior pituitary releases tropic hormones affecting other glands
- Example: TRH from hypothalamus → TSH from pituitary → T3/T4 from thyro...
Q3: Name the hormones secreted by the anterior pituitary and their functions.
Anterior pituitary hormones:
- Growth hormone: stimulates growth; lipolysis; protein synthesis
- TSH: stimulates thyroid to secrete T3/T4
- ACTH: stimulates adrenal cortex to secrete cortisol
- FSH: stimulates gamete production in gonads
- LH: triggers ovulation in females; testosterone production i...
Showing 3 of 8 questions. Visit the full page for complete solutions.