Higher Education Anatomy and Physiology 1 Lab Part Two Specialty Guide

1|Page



D312/ WGU D312 EXAM/ WGU D312 ANATOMY
AND PHYSIOLOGY 1 WITH LAB/ LAB PART 2;
SECTION 3 AND 4 EXAM 2025/2026 ACTUAL
EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALL
ANSWERED / ALREADY GRADED A+ / D312
ANATOMY AND PHYSIOLOGY 1 LAB PART 2:
SECTION 3 & 4 | BRAND NEW! WGU



These are the questions for the labs from the course material.
Please answer the questions, but also for each answer choice,
explain why the choice is correct or incorrect. For example, if
the answer is B, please explain why B is correct and why
choices A, C, and D, etc., are incorrect, for each question. Also,
for the images, label all parts of the image, if they are unlabeled.
For the matching questions, explain all choices, even if they
were not used to answer one of the questions. This will give you
extra practice with the material, which will help with synthesis
and retention. An example of this process is below.
Atoms combine to form molecules, for example, water, glucose,
and DNA. In what level of structural organization does this take
place?
a. Molecules This is not correct because it is not a name of a
level of organization. The name of the lowest level of
organization is chemical.
b. System This is not the correct answer because systems
are four levels of organization higher than chemical.
(chemical, cell, tissue, organ, system, organism)
c. Tissues This is not the correct answer because tissues are
two levels of organization higher than chemical. (chemical,
cell, tissue, organ, system, organism)

,2|Page


d. Chemical This is the correct answer because
chemical is the lowest level of structural
organization.

Section 3 Labs:
1. Which bone cells are entrapped in the bone matrix?
a. Osteoclast cells- are not entrapped in the bone
matrix. They are large, multinucleated cells
responsible for bone resorption, breaking down and
removing old or damaged bone tissue.
b. Osteogenic cells -are undifferentiated cells that can
differentiate into osteoblasts. They are found in the
periosteum (outer layer of the bone) and endosteum
(inner layer of the bone) and are involved in bone
formation and repair. However, they are not entrapped
within the bone matrix.
c. Osteoblast cells: are not entrapped in the bone
matrix. They are large, multinucleated cells
responsible for bone resorption, breaking down and
removing old or damaged bone tissue.
d. Osteocyte cells- Osteocyte cells are the bone cells
that are entrapped within the bone matrix. They are
derived from osteoblasts, which are responsible for
synthesizing and depositing the bone matrix. Once the
bone matrix is secreted, some osteoblasts become
trapped within the matrix and differentiate into
osteocytes.




For questions 2-5, label the components of the bone matrix. Your
choices are bone marrow, compact bone, periosteum, and
spongy bone.

,3|Page




2. What is the name of the
tissue labeled A? Spony
bone
3. What is the name of the tissue labeled B?-bone marrow

4. What is the name of the tissue labeled C?-compact bone

5. What is the name of the tissue labeled D?periosteum

6. Review the diagram of the structure of a long bone.
Which statement is true about the diaphysis labeled
D?




a. The diaphysis is comprised of compact bone and
cartilage.
b. The diaphysis is comprised mostly of compact
bone.
c. The diaphysis is comprised of spongy bone and
cartilage.
d. The diaphysis is comprised mostly of spongy
bone.

, 4|Page


Use the following image to answer questions 7 and 8.