Anatomy and Physiology · SHS3 Biomedical Science

Lesson notes

Learning Objectives

Indicator: 3.2.1.LI.2 - Explain the transport of oxygen, food, and water to all cells in the body through the connection between the respiratory and cardiovascular systems.

By the end of the lesson, learners can:

Describe the pathway of oxygen from the alveoli of the lungs into the blood and then to body cells, naming the key structures involved.
Explain how digested food molecules (such as glucose and amino acids) move from the small intestine into the bloodstream and are carried to cells.
Trace the route of water from absorption in the large intestine and small intestine into the blood plasma and through the circulatory system.
Draw and label a combined diagram showing the connection between the respiratory system (gas exchange surfaces) and the cardiovascular system (heart, blood vessels, blood) in transporting oxygen, food, and water.
Predict what would happen to body cells if any part of this transport chain (lungs, heart, blood vessels, or blood) failed to function properly.

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Curriculum details

Strand: Human Body Systems (Strand 2)
Sub-strand: Anatomy and Physiology (2.1)
Content standard: 3.2.1.CS.1 - Demonstrate an understanding of the interconnectedness of the body systems in energy generation and use (digestive, circulatory and musculoskeletal systems). 3.2.1.LO.1 Describe the role of enzymes digestion and explain how water and oxygen is transported the cardiovascular and respiratory systems.
Indicator: 3.2.1.LI.2 - Explain the transport of oxygen, food, and water to all cells in the body through the connection between the respiratory and cardiovascular systems.
Suggested placement: Semester 1, Week 12 (Week 12 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 89

Exemplars (from the NaCCA curriculum)

Initiating Talk for Learning: Learners think-pair-share their views on the importance of oxygen, food and water to the functioning and survival of humans. Discuss the role played by the connection of the respiratory and cardiovascular system when food, water and oxygen are taken in.
Digital Learning: Watch a video or animation, anatomical illustration, models, chart or cartoon illustration of how food, water and oxygen get into the bloodstream and are transported by the cardiovascular system and note the key observations.
Activity-Based Learning: Learners work in mixed-ability groups to create mind maps or illustrations to show how the products of digestion, water and oxygen from the lungs get into the cardiovascular system and are circulated throughout the human body. Learners then present their sketches to the class and receive feedback.
Teaching and Learning Resources:
- Anatomical diagrams of the digestive system
- Pictures or charts showing enzyme action
- substrates * Online resources etc. * Anatomical models
- Videos
- Projector
- White boards
- Models
Assessment (3.2.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning; Level 4 Extended critical thinking and reasoning.