C870 Human Anatomy and Physiology, catalog number BIO 5120, is the three-CU anatomy and physiology course in the WGU School of Education, covering the structures and functions of the human body, anatomical terminology, cells and tissues, and the healthy state of each organ system. The phrase healthy state is the one to notice. This is a normal-function course, not a pathophysiology course, and the assessed question is how a working body maintains itself rather than what happens when it fails.
Homeostasis is the organising idea
Anatomy and physiology is the course with the highest raw memory load on most science plans, and the students who suffer are the ones who treat it as memory alone. There is a spine that makes the volume manageable, and it is homeostasis: the body holds temperature, pH, glucose, fluid volume and oxygen within narrow limits by detecting departures and correcting them. Almost every physiological mechanism in the course is a piece of that machinery, and organising your study around regulated variables rather than around chapters cuts the memory load substantially.
The second organising idea is that structure predicts function at every scale. A cell with many mitochondria is doing energetically expensive work. A membrane with a huge surface area is doing exchange. A vessel with thick elastic walls is handling pressure. Once that habit is established, an unfamiliar structure becomes something to reason about rather than something to look up, and that is the reasoning graduate rubrics ask for when they want explanation rather than description.
Cells and tissues, named in the catalog scope, are the level students skip and the one that makes the organ systems make sense. Four tissue types, arranged differently, build every organ in the body, and their properties explain organ behaviour directly: epithelium covers and secretes, connective tissue supports and connects, muscle contracts, nervous tissue signals. A student who holds tissue properties can predict a great deal about an organ before studying it, which is exactly the reasoning a graduate rubric is trying to elicit when it asks for explanation rather than recall.
The third demand is terminology, which the catalog names explicitly. Anatomical language is precise for a reason: position, plane and relationship have to be unambiguous, and everyday words are not. A submission that describes something as above rather than superior, or that uses proximal and distal loosely, is signalling imprecision in a subject where imprecision has consequences. This is one of the few courses where vocabulary really is worth deliberate drilling.
Turning scored aspects into a plan
The scoring detail sits inside your Course of Study rather than in the public catalog. Read it before planning, because a School of Education science course may be measured by a submitted performance assessment, by a proctored objective assessment, or by both, and a high-volume content course needs a different schedule depending on which applies.
Under a performance assessment, aspects are judged independently on a three-point scale and a 2 in each aspect passes the task. Nothing averages, so a detailed cardiovascular section does not carry an endocrine aspect that stayed at the level of naming glands. Head each section with the rubric's own noun.
The word budget, worked. Take six scored aspects and directions asking for roughly 2,000 words. Reserve 160 for framing and 130 for a close, leaving 1,710, about 285 words per aspect. In this subject, allocate 70 words to structure with correct terminology, 130 to the mechanism including the regulatory loop, 50 to the integration with another system, and 35 to the consequence of the mechanism being disturbed. Aspects that return are usually those that described anatomy and never got to the physiology.
Where a proctored component applies, study by regulated variable and by system interaction rather than by chapter, because the harder items generally ask how two systems co-operate rather than what a single structure is called.
A structure that fits an anatomy and physiology response
Task directions come first where they set a format. Where they leave room, this arrangement keeps physiology in front of anatomy, which is where the scoring usually is.
| Section | What belongs in it | How it gets scored |
|---|---|---|
| Structure | The anatomy involved, in correct terminology, at the relevant scale | Scored for precision of terminology as well as accuracy |
| Function | What the structure does and how its form makes that possible | Scored for the structure and function link rather than for description alone |
| Regulation | The controlled variable, the sensor, the control centre and the effector | The scoring centre in a normal-function course |
| Integration | How this system co-operates with at least one other | Scored where systems interaction is named and often missing in drafts |
| Range of normal | The values or conditions that count as healthy, with units | Scored where the healthy state is named in the course scope |
| Sources | Current anatomy and physiology references, APA formatted | Scored wherever citation is named |
Where a task strays toward disease, keep the framing on normal function. This course covers the healthy state, so a disturbance is best used to illuminate the mechanism rather than to become the topic, and nothing you write should read as clinical advice.
Evidence craft in physiological writing
Physiology is quantitative and mechanistic, and vague writing shows immediately against that background.
- Give values with units for the variables you discuss, including normal ranges, and say where the values come from.
- Name each element of a regulatory loop explicitly rather than describing the body as somehow knowing what to do.
- Use correct anatomical terminology throughout, including planes, positions and relationships.
- Cite current references. Physiological understanding is stable in outline and revised in detail, and older texts differ in places that matter.
- Keep the writing non-clinical. This is a normal-function course and nothing in a submission should read as diagnosis or advice.
- Quote minimally; anatomical descriptions are heavily reproduced text and WGU runs submissions through a similarity check.
The habit that most improves these submissions is following a single variable through the whole loop, from the change that disturbs it to the correction that restores it. That narrative makes physiology explicable rather than encyclopedic, and it is precisely how you would need to teach it.
What separates Competent from a return
WGU records Competent or Not Competent rather than letter grades and produces no ordinary grade point average. Aspects are scored one at a time, so returns identify particular gaps rather than the whole submission.
- Every scored aspect has a heading using the rubric's own wording.
- Every structure is connected to the function its form enables.
- Every regulatory mechanism names its variable, sensor, control centre and effector.
- Every system is linked to at least one other system it works with.
- Every terminology choice is precise and consistent, including planes, positions and relationships.
- Every normal range quoted carries units and a source rather than appearing from memory.
Performance assessment work can be revised and resubmitted with no grade penalty, so a return costs time rather than standing. Terms run six months at a flat rate, and a high-volume course is the one most likely to expand to fill whatever time it is given, which makes an explicit finish date more useful here than anywhere else on the plan.
Where a proctored objective assessment applies, the rule is fixed. Proctored assessments are yours to sit. We prepare with terminology drills, regulatory loop practice and an honest readiness verdict, and we never ask for portal credentials.
Six mistakes students make in C870
- Memorising by chapter. Organising by regulated variable cuts the memory load and matches how the aspects are written.
- Describing anatomy and stopping. Physiology is where the scoring is, and structure without function is half an answer.
- Using everyday position words. Anatomical terminology is named in the catalog scope and imprecision is visible instantly.
- Writing as though the body decides. Regulation happens through sensors and effectors, and language implying intention obscures the mechanism.
- Treating systems as independent. Nearly every physiological question involves at least two systems co-operating.
- Drifting into disease. The course covers the healthy state, and clinical framing is both off-scope and inappropriate in a submission.
- Skipping tissues. Four tissue types build every organ in the body, and holding their properties lets you predict organ behaviour instead of memorising it.
How support works on this course
Send your Course of Study for C870 with any rubric and task directions. What comes back is a study structure organised by regulated variable instead of by chapter, regulatory loops written out with every element named, a terminology pass across the draft, and an aspect-mapped submission where each system is integrated with at least one other rather than described alone.
Where a proctored component applies, the same structure becomes the study plan: one regulated variable at a time, each loop reconstructed from memory rather than reread, with system interactions practised last because that is where the harder items concentrate.
Anatomy and physiology rewards structure more than hours. Three competency units of content organised around homeostasis takes a fraction of the time the same content takes memorised system by system.
Questions students ask about C870
Is C870 the same course as BIO 5120?
Does C870 cover diseases?
Can you take my proctored assessment?
Memorising anatomy and losing the physiology?
Send your Course of Study and any rubric. You get a homeostasis-first study structure, fully named regulatory loops, a terminology pass, and aspect-mapped drafting.
Where C870 sits in WGU's programs
The July 2026 catalog places this code in 1 current WGU program. Open a program page for the complete standard path and term positions. The live Degree Plan remains authoritative after transfer credit, substitutions, and mentor planning.
The assessments, one by one
The public catalog does not publish this course's PA/OA identity or task count. WGU Tutors publishes at most one PA manual per course and only from a WGU-controlled public rubric. Until that source exists, PA help begins from the student's real Course of Study and OA support remains preparation only.