Unit 14: The Body's Systems I
Reading
BJU Biology: 21A - "The respiratory system", 21B - "The digestive system, and 22A - "The circulatory system"
OpenStax Biology: Ch. 34 "Digestive system", Ch. 39 "Respiratory system", and Ch. 40 "Circulatory system"
Topics
Labs
Lecture video below (from 4/21/23)
BJU Biology: 21A - "The respiratory system", 21B - "The digestive system, and 22A - "The circulatory system"
OpenStax Biology: Ch. 34 "Digestive system", Ch. 39 "Respiratory system", and Ch. 40 "Circulatory system"
Topics
- Intro to Physiology
- Digestive system
- Circulatory and respiratory systems
Labs
- Digestive System lab, or
- Heart Dissection
Lecture video below (from 4/21/23)

14._body_systems_i_lecture_notes.docx |
Lecture outline
This section of Biology, called "Body Systems", examines the structure, layout, and function of human tissues, organs, and systems.
Levels of structure:
This section of Biology, called "Body Systems", examines the structure, layout, and function of human tissues, organs, and systems.
Levels of structure:
- Atoms bond together to form molecules
- Molecules assemble to form cells (you have trillions of cells in your body)
- Similar-functioning cells group together to form tissues (you have about 200 different tissues in your body)
- Tissues group together to form organs (heart, lungs, pancreas)
- Organs function together as organ systems (the heart, blood, and blood vessels make up the circulatory system)
- Organ systems make up the organism (humans, fruit flies, seaweed, dolphins
Video clips below: we will watch and discuss these in class

15._the_digestive_system__bju_biology_chapter_.pdf |

Lecture Slides: Body Systems |
Digestive Tract Structure & Function questions
Handout is posted below. Upload your completed work in Canvas, or bring to class.
Handout is posted below. Upload your completed work in Canvas, or bring to class.

digestive_tract_-_structure_and_function_questions_2022.docx |
"Client Report for Hans Spielman"
Do a complete and careful report on this client, and upload your finished work to Canvas.
Do a complete and careful report on this client, and upload your finished work to Canvas.

client_report_for_hans_spielman__.docx |
Digestive System Review Questions
Read BJU "Digestive System" (posted above) and answer Review Questions 21.4 (12 questions) and 21.5 (7 questions). Give complete, well thought-out answers. Number your answers the same way the book has them numbered. Turn in your completed work as an email attachment.
Read BJU "Digestive System" (posted above) and answer Review Questions 21.4 (12 questions) and 21.5 (7 questions). Give complete, well thought-out answers. Number your answers the same way the book has them numbered. Turn in your completed work as an email attachment.
Digestive System lab
We test the "digestion" of various foods in hydrochloric acid (to simulate the stomach) and a variety of enzymes (to simulate the small intestine), observe and compare the results.
We test the "digestion" of various foods in hydrochloric acid (to simulate the stomach) and a variety of enzymes (to simulate the small intestine), observe and compare the results.