Reading OpenStax Like a Scientist

Reading a science textbook is not like reading a novel or a news story, and nobody is born knowing how to do it. This chapter gives you a step-by-step way to read OpenStax Anatomy and Physiology so that the words actually stay with you, and so that the figures, which carry half of the content, start to make sense.

Textbook reading is a skill

Many students say the same thing about their first A&P reading: "I read the whole section, and then I could not tell you a single thing it said." If that has happened to you, you are not a bad reader. You were reading a science textbook the way most of us read everything else, from start to finish at a steady pace, waiting for the meaning to arrive. That works for a story. It does not work for a page that introduces ten new terms, describes a process with six steps, and points to a figure with fourteen labels.

Scientists and health professionals read differently. They read with a purpose. They look over the whole thing first. They read in small pieces and stop to check that each piece makes sense. They study the figures as carefully as the words. And they put what they read into their own words before moving on. None of that is talent. It is a set of habits, and you can learn them this week.

One more thing before we start: slow is normal. A dense A&P section can take two or three times longer to read well than a page of a novel. If you plan 20 minutes for a section that really needs 45, you will feel behind and rush. When you build your weekly template (Chapter 2), give reading more time than you think it needs.

Before you read: a five-minute preview

Before you read a section closely, spend about five minutes looking it over. A preview gives your brain a map, so that each new fact has a place to land. It is the first step in a well-known reading method called SQ3R (survey, question, read, recite, review), which was described by Francis Robinson in the 1940s and is still taught today.

When you preview an OpenStax chapter, look at these parts in order:

1. The learning objectives. Each OpenStax section begins with a short list that starts "By the end of this section, you will be able to..." These are a gift. They tell you exactly what the authors think matters most, and they line up closely with what you will be asked to do.
2. The headings. Read the section title and every subheading. Together they form an outline of the section.
3. The bold terms. Skim for words in bold. These are the key terms that also appear in the chapter's key terms list. Do not try to learn them yet. Just notice how many there are.
4. The figures and captions. Look at each figure and read its caption. You will come back to them, but a first look tells you what the section is about faster than any paragraph.
5. The end-of-chapter questions. Glance at the review questions and critical thinking questions. They show you the kind of thinking you will need.

Turn headings into questions

The second step in SQ3R is to turn what you previewed into questions. This simple move changes how you read. Instead of passively taking in words, you are hunting for answers. Here are some examples from BIO 243 chapters:

• "Epithelial Tissue" becomes "What are the kinds of epithelial tissue, and how does each one's shape fit its job?"
• "The Cell Membrane" becomes "What is the membrane made of, and how do things get across it?"
• "Bone Formation and Development" becomes "What are the two ways bones form, and what cells do the work?"
• "Muscle Fiber Contraction and Relaxation" becomes "What steps happen, in order, when a muscle fiber contracts?"

Write your questions in the margin of your notes or at the top of a page. When you finish reading the section, you should be able to answer them without looking. If you cannot, you know exactly what to reread.

Read in chunks, then stop and explain

After the preview, read the section one chunk at a time. A chunk is usually one subsection, or two or three paragraphs: just enough for one main idea. At the end of each chunk, stop. Look away from the page. Then do one of two things.

Recite: say it without looking

Try to say or write the main idea of the chunk from memory, in your own words. Researchers tested a simple routine called read, recite, review. Students read a passage, then recited out loud everything they could remember, then reread the passage to check. Compared with simply rereading or taking notes, the read-recite-review routine led to better recall and better performance on test questions, and it took no extra materials at all (McDaniel et al., 2009). Reciting works because it is a small act of retrieval practice, the most powerful study strategy you will meet in Chapter 6.

Self-explain: ask "why" and "how"

The second move is to explain the chunk to yourself. Ask: Why is this true? How does this connect to what I already know? What would happen if this step failed? In a classic study, students who were prompted to explain each line of a biology text to themselves as they read understood the material better than students who read it twice (Chi et al., 1994). A later review of many studies found that prompting self-explanation helps learning across many subjects, with a moderate overall benefit (Bisra et al., 2018). In A&P, self-explanation is how you move past memorizing names to understanding how the body works.

Practice: paraphrasing a Chapter 4 passage

Let's practice on a short passage written in the style of OpenStax Chapter 4. Read it once (it is set in italics below), then look away and try to say it in your own words before reading on.

Connective tissue is made of three main parts: cells, protein fibers and ground substance. The fibers and the ground substance together form the extracellular matrix, which fills the space between the cells. Fibroblasts are the most common cells in connective tissue proper; they make the fibers and the ground substance. Collagen fibers are strong and resist pulling forces. Elastic fibers can stretch and then return to their original shape. Reticular fibers form a fine supporting mesh inside soft organs. The type and amount of fibers and ground substance determine the properties of each connective tissue.

A weak paraphrase

"Connective tissue has cells, fibers and ground substance. There are collagen, elastic and reticular fibers."

This is not wrong, but it is mostly a list of names. It does not say what the matrix is, who makes it, or why the fibers matter. A student with this paraphrase could answer "name the three fiber types" but would struggle with a question like "Which fiber would you expect to find in large amounts in a tendon, and why?"

A strong paraphrase

"Connective tissue is mostly not cells. It is cells sitting in a matrix that they make themselves, mainly fibroblasts. The matrix has a gel-like ground substance plus fibers. Each fiber does a different job: collagen is for strength against pulling (so tendons should be full of it), elastic is for stretch and snap back (like in skin or artery walls), and reticular makes a soft net that holds organs together. So if I know what job a tissue has to do, I can predict which fibers it has."

Notice what the strong paraphrase does. It is in plain words. It connects structure to function. It makes a prediction (tendons need collagen). And it ends with a rule that will help on questions the student has never seen. That last sentence is self-explanation at work.

Build a running vocabulary list with word roots

A&P vocabulary looks scary until you notice that most of it is built from a fairly small set of Greek and Latin parts. A prefix comes at the front of a word, a root carries the core meaning, and a suffix comes at the end. Learn a part once, and it unlocks dozens of words for the rest of the course and the rest of your career.

How to keep the list

Keep one running vocabulary list for the whole course, in a notebook, a document or a CircleIn deck. For each new term, write four things:

1. The term, spelled correctly.
2. Its word parts and what they mean, if it has any.
3. A short definition in your own words.
4. Where it is or what it does in the body.

Here are some word parts you will meet again and again in BIO 243:

• osteo- (bone): osteocyte, osteoclast, osteoporosis
• chondr- (cartilage): chondrocyte, perichondrium
• myo- or sarco- (muscle): myofibril, sarcomere, sarcoplasmic reticulum
• neuro- (nerve): neuron, neurotransmitter, neuromuscular junction
• -cyte (cell), -blast (builder or immature cell), -clast (breaker)
• hyper- (above, more), hypo- (below, less): hypertrophy, hypodermis
• -itis (inflammation): dermatitis, arthritis, osteomyelitis
• peri- (around), endo- (within), epi- (upon): periosteum, endosteum, epimysium

Look at that last line. The periosteum is the membrane around a bone, and the endosteum lines the space inside it. Later, in muscle, the epimysium wraps a whole muscle, the perimysium wraps bundles of fibers, and the endomysium surrounds each single fiber. Once you know the prefixes, the names tell you exactly where each layer is.

Reading figures: half the content lives here

In many subjects, pictures are decoration. In A&P, they are the content. A single OpenStax figure of a sarcomere, a neuron or a layer of skin can hold as much information as a full page of text, and exam questions often describe or show the same kinds of structures. If you skip the figures, you skip half the chapter.

Research on learning from words and pictures, often called multimedia learning, finds that people generally learn more deeply from words combined with well-designed pictures than from words alone (Mayer, 2009). But that only works if you actually study the picture. Here is how.

Four steps for any figure

1. Read the caption first. The caption tells you what the figure shows and often adds facts that are not in the main text.
2. Find every label. Trace each label line to the exact structure it points to. Say the names out loud. Notice which labels are also bold terms in the text.
3. Check the scale. Is it a drawing or a photo? Many A&P figures include micrographs, which are photos taken through a microscope. "LM" means light micrograph, the kind you will see in lab. "SEM" and "TEM" mean electron micrographs, which show much smaller details. The magnification tells you how big things really are.
4. Link the shape to the job. Ask why the structure looks the way it does. Simple squamous epithelium is thin and flat because its job is to let gases and fluids pass through quickly. Stratified squamous epithelium is thick because its job is protection.

Turn figures into a quiz

Once you have studied a figure, cover the labels with sticky notes or a strip of paper and try to name each structure. You can also take a screenshot, use a photo editor to cover the labels, and quiz yourself from your phone. This "blank diagram" practice is one of the best ways to prepare for both exams and lab practicals, and Chapter 7 shows you how to do it well.

The Reading Guide is a tool, not a chore

BIO 243 gives you a ready-made reading tool: the fillable OpenStax Reading Guide by M. Storm, which you will find in Blackboard. Its answers come straight from the textbook, and its content shows up on exams. Completing it before an exam can also earn extra credit, so check your syllabus for how and when to submit it.

Many students treat the Reading Guide as busywork: they search the chapter for each answer, copy a sentence, and move on. That earns the extra credit, but it wastes most of the learning. Here is a better way to use it:

• Work on it while you read, not after. When you finish a chunk and recite it, answer the Reading Guide questions for that chunk.
• Try first, then check. Before you look back at the text, try to answer from memory. Then check and correct. That turns every question into retrieval practice.
• Use your own words when you can. If a question asks you to describe or explain, paraphrase instead of copying.
• Reuse it later. The finished guide is a ready-made set of practice questions. Cover your answers and quiz yourself in the days before the exam.
• Do not leave it for the night before. The extra credit is due before the exam, but the learning comes from doing it chapter by chapter.

Remember that the Reading Guide is graded work. Complete it yourself, and do not use AI to fill it in. That is the second BIO 243 AI rule.

Putting it together: a reading plan for one chapter

Here is how the pieces fit into your week for a typical BIO 243 chapter:

1. Before the first lecture on a chapter (about 15 minutes): preview the whole chapter. Read the learning objectives, headings and captions. Write your questions.
2. Across two or three study blocks: read one or two sections per block using the loop in Figure 3.1. Recite, explain, add terms to your vocabulary list and complete that part of the Reading Guide.
3. After each lecture: reconcile your lecture notes with your reading (Chapter 4 shows you how).
4. At the end of the week: answer your heading questions from memory, try a few end-of-chapter review questions, and quiz yourself on the figures.

This takes real time, and in the first weeks it may feel slower than just reading straight through. But reading straight through and remembering nothing is the slowest method of all. Within a few weeks, previewing and chunking start to feel natural, your vocabulary list starts to pay off, and the reading gets faster because you understand more of it the first time.