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school lecturer Biology || Animal Physiology-1

  • August 2, 2025
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School Lecturer Biology || Animal Physiology-1 – Complete Guide for Exam Preparation

Preparing for the RPSC School Lecturer Biology exam? One of the most important and conceptual units in the syllabus is Animal Physiology-1. This topic not only appears frequently in exams but also forms the foundation for advanced topics in biology, physiology, and zoology.

In this blog, we’ll explore the core concepts, important sub-topics, and exam-relevant facts related to Animal Physiology-1, especially curated for School Lecturer Biology aspirants.

πŸ” What is Animal Physiology?

Animal physiology is the branch of biology that deals with the study of how animal bodies function. It includes understanding internal systems such as digestion, circulation, excretion, respiration, and more. The subject blends both structural and functional aspects of various organ systems.

Animal Physiology-1 generally includes the following core systems:

  • Digestive System

  • Respiratory System

  • Circulatory System

  • Excretory System

  • Thermoregulation

  • Osmoregulation

πŸ“˜ 1. Digestive System

πŸ”Ή Concept:

The digestive system breaks down complex food substances into simple absorbable units.

πŸ”Ή Key Points:

  • Digestive enzymes: amylase, pepsin, trypsin, lipase, maltase

  • Digestive glands: salivary glands, liver, pancreas

  • Absorption of nutrients in the small intestine

  • Role of villi and microvilli

πŸ”Ή Exam Fact:

Bile juice has no enzymes but helps in the emulsification of fats.

🌬️ 2. Respiratory System

πŸ”Ή Concept:

The system involved in the exchange of gasesβ€”mainly oxygen and carbon dioxide.

πŸ”Ή Key Points:

  • Types of respiration: aerobic and anaerobic

  • Human respiratory tract: nose β†’ pharynx β†’ larynx β†’ trachea β†’ bronchi β†’ lungs

  • Pulmonary volumes: tidal volume, vital capacity, residual volume

  • Oxygen transport via hemoglobin

πŸ”Ή Exam Fact:

Hemoglobin carries 97% of oxygen in blood; rest is dissolved in plasma.

❀️ 3. Circulatory System

πŸ”Ή Concept:

Responsible for the transport of oxygen, nutrients, hormones, and waste products.

πŸ”Ή Key Points:

  • Human heart: 4 chambers

  • Double circulation: systemic and pulmonary

  • Blood components: RBC, WBC, platelets

  • Lymphatic system

  • Blood groups and Rh factor

πŸ”Ή Exam Fact:

Normal blood pressure in humans: 120/80 mm Hg.

πŸ’§ 4. Excretory System

πŸ”Ή Concept:

Eliminates nitrogenous waste and maintains water–ion balance.

πŸ”Ή Key Points:

  • Human excretory organs: kidneys, ureters, bladder, urethra

  • Nephron structure and function

  • Filtration, reabsorption, and secretion

  • Urea cycle

  • Disorders: kidney stones, uremia, dialysis

πŸ”Ή Exam Fact:

ADH (Antidiuretic Hormone) helps in water reabsorption in kidneys.

🌑️ 5. Thermoregulation & Osmoregulation

πŸ”Ή Concept:

Maintaining internal body temperature and water-salt balance.

πŸ”Ή Key Points:

  • Poikilotherms vs Homeotherms

  • Mechanisms of temperature control: sweating, vasodilation

  • Osmoregulation in freshwater and marine animals

  • Hormonal control: ADH, aldosterone

πŸ”Ή Exam Fact:

Camels can tolerate high body temperatures and are efficient osmoregulators.

πŸ§ͺ Tips for RPSC School Lecturer Biology Exam

  1. Focus on Concepts – Animal physiology is logic-based; understand rather than memorize.

  2. Use Diagrams – Labelled diagrams of nephron, heart, alveoli, etc., are often asked.

  3. Solve PYQs – Previous year questions help identify high-weightage topics.

  4. Revise Terminologies – Enzyme names, hormone functions, physiological terms must be clear.

  5. Practice MCQs – Test your accuracy and speed regularly.

πŸ“‹ Sample Multiple Choice Questions

Q1. What is the function of bile salts in digestion?
A. Emulsify fats βœ…

Q2. Which organ is responsible for ultra-filtration in humans?
A. Glomerulus βœ…

Q3. What is the average resting heartbeat in adults?
A. 72 beats per minute βœ…

Q4. Which hormone controls water reabsorption in the kidneys?
A. ADH βœ…

βœ… Conclusion

The unit School Lecturer Biology || Animal Physiology-1 is a fundamental and scoring topic for all biology teaching aspirants. A strong grasp of these physiological systems not only prepares you for your exam but also builds the foundation for effective teaching. Focus on clear understanding, revise frequently, and practice consistently.

For more topic-wise blogs, study notes, and mock tests, stay connected with Aadhar Institute and give your RPSC School Lecturer preparation a winning edge.