Body systems and tissues
Do now
Relate organ systems to tissue types and prepare for the PLTW morgue task.
- Hand in
- Exit ticket: name all four tissue types, one identifying structural feature of each, and one organ that contains each type.
- Where
- Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.
You get two school days for every day you were absent, so this deadline moves with you.
If the whole human body is made of only four kinds of , how does a pathologist look at a slice of heart under a microscope and know it failed?
Relate organ systems to types and prepare for the PLTW morgue task.
- • I can name the four types and their roles.
- • I can connect a to the it serves.
- Name any two organs in the human body and guess what they are physically made of.
- A heart pumps and a stomach lining protects. Would you expect those two jobs to be done by the same kind of or different kinds? Why?
- 1Take notes on the four primary types and their functions.
- 2Map two organ systems to the tissues that build them.
- 3Review how a pathologist links damage to .
- 4Complete the PLTW master-the-morgue online task on body systems.
- 5Note the observation variables you will record during microscopy.
What did this day actually feel like?
Body systems and tissues
Four primary tissue types: epithelial, connective, muscle, nervous. Every organ in the body is built from combinations of those four. That is a genuinely surprising fact and it made the body feel much more knowable than it did an hour earlier.
Then how a pathologist reads tissue damage to work out what went wrong. The logic is that you learn what normal looks like so thoroughly that abnormal announces itself.
Turned in: exit ticket → Exit Tickets folder
Fiction. There is no such student. The lessons, labs and dates are the real planned course; the student, the classmates and the conversations are invented.
The same day, drawn.
Every organ in the body is built from combinations of just four tissue types. That made the whole body feel more knowable than it had an hour earlier.
Fiction. There is no such student. The lessons, labs and dates are the real planned course; the student, the classmates and the conversations are invented.
🛠 Get unstuck · pick your level
🔑 Today's words · 5
Tap a word in the lesson for a plain meaning and one example. Recycled into next week's Do-Now.
Do the work · 80-minute blockfirst 5 min = hook▸
💡 Big idea: A pathologist studies just four types instead of 78 organs because every organ is built from those four, so learning how each tissue breaks lets you read damage anywhere in the body.
- 0:00Quick-draw warm-up: sketch what you think a cell looks like; compare to actual cell diagrams
- 0:08Teacher-led notes: four types, defining features of each, which organs they build
- 0:28Mapping activity: draw two organ systems and label which types make up each structure
- 0:42myPLTW: complete the master-the-morgue body-systems online task
- 1:02Write observation variables for Wednesday's microscopy: what will you record for each slide?
- 1:10Exit ticket: name the four types and one identifying feature of each
- • Everything in your body, every organ, every gland, every vessel, is made from combinations of just four types. If you can identify the tissue, you can start to understand what organ it came from and what might have gone wrong with it.
- • Pathologists use , the microscopic study of , to determine . They are looking for patterns: cells that are swollen, dead, or abnormally shaped. Those patterns are the clues.
- • Tomorrow you will identify types on real slides and examine a preserved heart. Today we build the knowledge you need to actually recognize what you are looking at.
- • By the end of today you should be able to look at a cross-section of and at least ask the right question: , , muscle, or nerve?
- • The four primary types are (covering/lining), (support/binding), muscle (movement), and nervous (communication).
- • A pathologist identifies by looking for -level changes such as necrosis, inflammation, or structural damage in slides.
- • Organ systems are not independent: the cardiovascular system depends on muscular and tissue, and a failure in one tissue type can cascade across systems.
Unit 1.2 Master the Morgue: Body systems, toxicology evidence, tissue microscopy, gross anatomy, preserved-heart/autopsy alternative. · Body systems and tissues
Day 2 of this lesson. Open this exact section in myPLTW (find it in Clever, Microsoft sign-in), then do the work below.
Do this: Open Lesson 1.2 Master the Morgue in myPLTW and complete the body-systems and -types online task.
Mark the Lesson 1.2 body-systems task complete in myPLTW.
You read the Lesson 1.2 overview Monday. By the end of today the myPLTW body-systems task should be finished.
Screenshot of myPLTW showing the Lesson 1.2 body-systems task marked complete.
The official PLTW activity stays inside myPLTW. If myPLTW will not open, use F1 and E1-E3 on this page to complete today's local evidence decision, then make up the official activity when access returns. Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not.
Check things off as you work, then submit. This tells Mr. Mendoza how you're doing so he can help the class. It does not replace turning in your producible through the submission route shown below.
Use the code Mr. Mendoza gave you, not your name. Saved on this device.
Unit 1.2 Master the Morgue: Body systems, toxicology evidence, tissue microscopy, gross anatomy, preserved-heart/autopsy alternative. · Body systems and tissues
Open Lesson 1.2 Master the Morgue in myPLTW and complete the body-systems and -types online task.
You read the Lesson 1.2 overview Monday. By the end of today the myPLTW body-systems task should be finished.
This is how Mr. Mendoza sees the class keeping pace with PLTW. Be honest, it only helps if it is accurate.
🎯 Relate organ systems to types and prepare for the PLTW morgue task.
- Take notes on the four primary types and their functions.
- Map two organ systems to the tissues that build them.
- Review how a pathologist links damage to .
- Complete the PLTW master-the-morgue online task on body systems.
- Note the observation variables you will record during microscopy.
Exit ticket: Exit ticket: name all four types, one identifying structural feature of each, and one organ that contains each type.
Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not. Use the checklist just below and upload by 11:29 PM for full credit. Absent with an excused absence? You get two school days for every day you were absent, so this deadline moves with you.
| Task | Who |
|---|---|
| Take notes on the four primary types and their functions. | _______ |
| Map two organ systems to the tissues that build them. | _______ |
| Review how a pathologist links damage to . | _______ |
| Complete the PLTW master-the-morgue online task on body systems. | _______ |
| Note the observation variables you will record during microscopy. | _______ |
Working solo? Put your own name in "Who" for every row.
- I can name the four types and their roles.
- I can connect a to the it serves.
- 1Do thisRelate organ systems to tissue types and prepare for the PLTW morgue task.
- 2Use this resource
- 3Submit thisExit ticket: Exit ticket: name all four tissue types, one identifying structural feature of each, and one organ that contains each type.
- 4Submit it here
- 1Open the drop folder.
- 2Sign in with your district Microsoft account, not a personal one.
- 3Upload the file, named Lastname_Firstname__Assignment Title.
- 4Your own upload panel says Uploaded with a green check: that is your receipt.
Turn this in at the drop folder with your district Microsoft sign-in, or hand it to Mr. Mendoza in class. Both count as submitted. Doing the activity in myPLTW does not. Principles of Biomedical Technology (Principles of Biomedical Science) › Unit 1.2 Master the Morgue: Body systems, toxicology evidence, tissue microscopy, gross anatomy, preserved-heart/autopsy alternative. › Exit ticketOpen the drop folder
Learn it · deck, reading, and vocabulary▸
The deck carries the prior idea forward, lets you inspect an analogy, maps the rule to biology, and ends with the same evidence decision and exit ticket used on this page.
Generated from this lesson's canonical data with a red-team citation check.
law overrides family consent in suspicious deaths because a society that cannot investigate how people die cannot catch the poisonings, hazards, and crimes that would kill more people.
A pathologist studies just four types instead of 78 organs because every organ is built from those four, so learning how each tissue breaks lets you read damage anywhere in the body.
A mechanic studies a tool whose shape allows one job but limits another.
- Which feature makes the tool work?
- What changes if that feature bends or breaks?
- Which observation shows function rather than appearance?
Structure creates possibilities and limits for function.
Living tissues adapt and interact with other systems; a metal tool does not.
- • Tool shape maps to .
- • The job maps to physiological function.
- • Damage maps to a predicted functional change.
Driving question: If the whole human body is made of only four kinds of , how does a pathologist look at a slice of heart under a microscope and know it failed?
What you already know: law overrides family consent in suspicious deaths because a society that cannot investigate how people die cannot catch the poisonings, hazards, and crimes that would kill more people.
New idea: A pathologist studies just four types instead of 78 organs because every organ is built from those four, so learning how each tissue breaks lets you read damage anywhere in the body.
Visual or model: F1. F1. A lesson illustration or teaching diagram for Body systems and tissues. Use it with E1-E3; it is a model or context image, not experimental or patient data. What to notice: Trace the labeled observation or evidence sequence before choosing an explanation.
- Observe or measure the relevant feature in Body systems and tissues.
- Organize the observation with a stable evidence ID.
- Apply this rule: Structure creates possibilities and limits for function.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: If the whole human body is made of only four kinds of , how does a pathologist look at a slice of heart under a microscope and know it failed?
What the evidence supports: E1-E3 and F1 support the daily take-home when the response meets the stated success criteria.
What it cannot prove: The package does not support claims beyond this lesson's or any real patient diagnosis.
- • : The body's ongoing process of keeping internal conditions like temperature, blood sugar, and pH steady despite changes in the outside environment.
- • : A group of similar cells working together to perform a shared function, such as muscle, nerve, or .
- • : A group of organs that work together to carry out a major body function, such as the digestive or circulatory system.
- • toxicology: The science of how chemicals and other substances cause harm to living things, including the dose at which they become dangerous.
- • : The study of the microscopic structure of tissues, examining thin stained slices under a microscope to see how cells are arranged.
- • : The specific physiological breakdown inside the body that directly ends life, such as a fatal heart rhythm or blood loss, separate from the underlying cause.
Use it now: Choose one decision option. Cite E1 and E3, then explain how the rule connects the evidence to your choice.
Go further, optional: The source links below are optional enrichment. Every fact required for today's local evidence decision appears in this lesson package.
The four primary types are (covering/lining), (support/binding), muscle (movement), and nervous (communication).
Limit: E1 supplies context or an observation; it does not by itself establish the explanation.
A pathologist studies just four types instead of 78 organs because every organ is built from those four, so learning how each tissue breaks lets you read damage anywhere in the body.
Limit: E2 is a teaching statement or comparison and must be checked against the task evidence.
I can name the four types and their roles.
Limit: E3 supports only the result or product criterion named here; it cannot justify a broader clinical or causal claim.
PLTW-PBT-2026-09-23 · Simulated classroom evidence scenario
Your role: biomedical investigator
Decision: Your team must decide what the evidence from Body systems and tissues supports before submitting the exit response named on the lesson page.
- • Select the option best supported by E1-E3.
- • Select a reasonable alternative and name the evidence it would require.
- • Delay the claim because the evidence does not distinguish the options.
Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Submit it as the exit response.
Claim ceiling: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about Body systems and tissues. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
Reason for review: Your team must decide what the evidence from Body systems and tissues supports before submitting the exit response named on the lesson page.
Context: Every organ is built from just four types, so damage at the tissue level is the evidence a pathologist uses to explain a death.
- • T1: Take notes on the four primary types and their functions.
- • T2: Map two organ systems to the tissues that build them.
- • T3: Review how a pathologist links damage to .
- • T4: Complete the PLTW master-the-morgue online task on body systems.
- • T5: Note the observation variables you will record during microscopy.
- • E1: The four primary types are (covering/lining), (support/binding), muscle (movement), and nervous (communication).
- • E2: A pathologist studies just four types instead of 78 organs because every organ is built from those four, so learning how each tissue breaks lets you read damage anywhere in the body.
- • E3: I can name the four types and their roles.
Measurements: No patient measurement is supplied unless it appears explicitly in E1-E3 or F1. Do not invent a value.
Figure finding: Teaching diagram for Body systems and tissues. Trace the labeled observation or evidence sequence before choosing an explanation. This is a teaching model, not patient or experimental data.
Uncertainty: This is a composite classroom scenario. Missing history, measurements, or confirmation tests remain unknown and limit the conclusion.
Students often think Students think each organ is made of its own unique special material, so the heart is made of heart stuff and the liver is made of liver stuff.. The trap: That is a trap because all organs are combinations of the same four types (, , muscle, nervous); the heart and the liver share tissues, which is why a single tissue failure can cascade across many different organs.
Four tissue types, a feature, and an organ:
- Epithelial: tightly packed cells that cover and line surfaces; found in the skin.
- Connective: cells spread in a matrix that supports and binds; found in bone.
- Muscle: long fibers that contract; found in the heart.
- Nervous: branching cells that send signals; found in the brain.
Why it matters: organs are built from combinations of these four, so recognizing them is the first step a pathologist takes when reading a slide.
| Tissue type | Feature | Organ example |
|---|---|---|
| Epithelial | Covers and lines surfaces | Skin |
| Connective | Matrix supports and binds | Bone |
| Muscle | Fibers that contract | Heart |
| Nervous | Cells that send signals | Brain |
This model shows the level of evidence and organization needed to complete: An exit ticket naming the four primary tissue types, one structural feature of each, and one organ that contains each, checking recall before microscopy.
- Name the prompt or task.
- Answer it directly with the key evidence.
- Check that the response matches the requested format.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Hand in your exit ticket before leaving class. Also complete the online master-the-morgue body-systems task.
- CER:
- Claim, Evidence, Reasoning: make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure, the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities. Find it in Clever with your Microsoft sign-in, right next to Schoology.
Tap the speaker to hear a term. Add two of these to your notebook glossary with a definition and an example in your own words.
Pick just 2 or 3 words from today and make them yours: write what each one means in your own words, name the context clue or evidence that helped, then give one example from what you actually did in Body systems and tissues. Try your own words first; the glossary is there if you get stuck. This is voluntary and counts as extra credit, so keep it short.
Saved on this device. Show Mr. Mendoza or add these to your notebook glossary to claim the extra credit.
Hand-picked readings and interactives for this lesson, from authoritative open organizations and PLTW's own public course outline.
Check yourself · commit, then reveal▸
Claim ceiling for this check: The supplied lesson evidence can support an observation, pattern, classroom mechanism, or next-step decision about Body systems and tissues. It cannot by itself prove causation, establish a real clinical diagnosis, or justify action outside this classroom task.
The wall of the heart is mostly one tissue type doing one job. Which of the four tissue types is it, and what job is that tissue built to do?
Write an answer and pick a confidence to unlock the key.
Fast retrieval with instant answers, not the commit-then-reveal check above. Try each from memory first: write what you remember about the earlier units, then check yourself here.
Go further and get help▸
What today's skills lead to. These are real health-science careers this course builds toward. Tap one to see, on the US Department of Labor's O*NET site, what the job actually involves, what it pays, and how fast it is growing.
The bench work needs equipment you do not have at home. Do the thinking half now: read the procedure, write your prediction, and set up your data table so it is ready.
Back in class. Ask Mr. Mendoza for the class data set, or for a bench slot to run it yourself. Do not submit a Exit ticket with invented numbers.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Khan Academy: human body systems (Health and medicine)- CompleteEvery required part of the artifact is present, nothing left blank.
- AccurateThe science and the data are correct and match the evidence.
- Scientific reasoningYou explain your claim with evidence and reasoning (CER), not just an answer.
- Professional communicationClear, organized, labeled, and written the way a clinician or scientist would.
- SubmittedTurned in the right way, on the class site or handed to Mr. Mendoza in class, and confirmed. Not in Schoology: that is where the report-card grade appears later.