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Pathway Elective · Biomedical · Course 5455
Principles of Biomedical Science
Your complete digital study companion, Nathan. Five body systems, four unit exams, a final modeled on the real PLTW PBS assessment, interactive flashcards, and curated resources all in one place.
Curriculum Map
Body Systems & Units
UNIT 01
🩺 Cardiovascular System
Heart anatomy, blood flow pathways, cardiac output, ECG basics, and common diseases.
Heart chambers
Blood pressure
Pulse rate
Cholesterol
Atherosclerosis
UNIT 02
🔬 Cellular Biology & Genetics
Cell organelles, DNA replication, Mendelian genetics, mutations, and genetic disorders.
Mitosis / Meiosis
DNA structure
Punnett squares
Cancer biology
Karyotypes
UNIT 03
🛡️ Immune & Lymphatic System
Innate vs. adaptive immunity, lymphocytes, vaccines, autoimmune disorders, and HIV/AIDS.
T-cells / B-cells
Antibodies
Pathogens
Vaccine mechanism
Allergies
UNIT 04
🧠 Nervous & Endocrine Systems
Neuron anatomy, action potentials, reflexes, hormones, feedback loops, and diabetes.
Neurons
Synapse
Hormones
Feedback loops
Diabetes
UNIT 05
🦴 Skeletal & Muscular System
Bone structure, joints, muscle fiber types, contraction mechanism, and musculoskeletal disease.
Bone anatomy
Joint types
Sliding filament
Muscle types
Fractures
Curated Links
Khan Academy, YouTube & Online Resources
🎓 Khan Academy
Khan Academy
Circulatory System — Heart & Blood Vessels
Full walkthrough of heart anatomy, circulation loops, and blood pressure regulation.
Open on Khan Academy
Khan Academy
Cell Biology & Organelles
Detailed breakdowns of eukaryotic organelles, the cell cycle, mitosis and meiosis.
Open on Khan Academy
Khan Academy
Genetics — DNA, Heredity & Mutations
Punnett squares, chromosomal inheritance, DNA replication, and genetic disorders.
Open on Khan Academy
Khan Academy
Immune System
Innate vs. adaptive immunity, lymphocytes, antigens, antibodies, and how vaccines work.
Open on Khan Academy
Khan Academy
Nervous System — Neurons & Action Potentials
Resting potential, action potentials, synaptic transmission, and the central nervous system.
Open on Khan Academy
Khan Academy
Endocrine System & Hormones
Hormone types, glands, feedback loops, insulin/glucagon, and diabetes pathophysiology.
Open on Khan Academy
📺 YouTube Videos
YouTube · CrashCourse
Circulatory System — CrashCourse
Fast-paced, entertaining overview of the heart, blood vessels, and blood composition.
Watch on YouTube
YouTube · CrashCourse
Immune System — CrashCourse
Covers innate immunity, adaptive immunity, B & T cells, and memory cells.
Watch on YouTube
YouTube · CrashCourse
Nervous System — CrashCourse
Neurons, action potentials, CNS vs. PNS, and major brain structures.
Watch on YouTube
YouTube · Amoeba Sisters
DNA Replication & Mitosis
Clear animated explanations of the cell cycle, DNA replication, and cell division.
Watch on YouTube
YouTube · Ninja Nerd
Cardiac Physiology Deep Dive
Medical-level detail on ECG, cardiac output, and heart failure — great for PBS depth.
Watch on YouTube
YouTube · PLTW
Official PLTW PBS Walkthroughs
Official Project Lead The Way channel with course-specific walkthroughs and labs.
Watch on YouTube
🌐 Other Online Resources
NIH — National Library of Medicine
MedlinePlus — Body Systems Encyclopedia
Authoritative, readable articles on every body system, disease, and medical term.
Open MedlinePlus
Visible Body
3D Anatomy & Physiology Atlas
Interactive 3D models of every body system. Rotate, dissect, and explore structures.
Open Visible Body
Quizlet
PBS 5455 Community Study Sets
Search "Principles of Biomedical Science PLTW" for thousands of peer-made flashcard sets.
Search Quizlet
PhET Simulations — CU Boulder
Biology & Physics Simulations
Free simulations for genes, natural selection, and molecular concepts relevant to PBS.
Open PhET
CDC — Centers for Disease Control
Disease & Pathogen Resource Library
Real-world data on infectious diseases, immunization schedules, and outbreak reports.
Open CDC A-Z
PLTW — Official
PLTW Student Portal & Resources
Log in to access official PBS activity sheets, journals, and teacher-released materials.
Open PLTW Portal
Interactive Review
Flashcards — Tap to Flip
CARDIOVASCULAR
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CARDIOVASCULAR
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Unit Assessments
Four Unit Exams
EXAM 01
Cardiovascular System
EXAM 02
Cellular Biology & Genetics
EXAM 03
Immune & Lymphatic System
EXAM 04
Nervous & Endocrine Systems
Cumulative Assessment
Final Exam — PBS 5455 Style
This 30-question exam is modeled on the real PLTW Principles of Biomedical Science end-of-course assessment. It covers all five body systems with scenario-based questions, data interpretation, and applied clinical reasoning.
