PHYSIOLOGY I: CELLS, TISSUES, INTEGUMENTARY &
SKELETAL SYSTEMS | 2026/2027 UPDATE COMPLETE.
120 Questions with Answers and Detailed Rationales
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This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
BSC 2085 LAB MIDTERM STUDY GUIDE | ANATOMY & PHYSIOLOGY I: CELLS, TISSUES,
INTEGUMENTARY & SKELETAL SYSTEMS | 2026/2027 UPDATE COMPLETE.. It contains 120 carefully
selected questions that reflect the most current exam content and testing strategies. Each question is
accompanied by a correct answer and a detailed rationale that explains the underlying pathophysiology,
pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
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Review Summary 120 Questions
Foundations - Application - BSC 2085 LAB Study Guide Anatomy & Physiology I Cells Tissues
Integumentary & Skeletal Systems 2026/2027 Update Complete Cells Tissues Integumentary & Skeletal
Systems Undergraduate YEAR 1-2 Anatomy & Physiology I
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
CELL Structure AND 1-20 Tissue, Directly, Responsible, Processes, Layer
Function
CELL Transport Mechanisms 21-40 Primary, Tissue, Observes, Researcher, Cells
Tissue Types AND 41-60 Tissue, Likely, Cells, Researcher, Effect
Identification
Integumentary System 61-80 Function, Tissue, Cells, Primary, Cultured
Skeletal System Overview 81-100 Tissue, Function, Likely, Cells, Primary
BONE Tissue AND 101-120 Sequence, Researcher, Tissue, Events, Structural
Development
TOTAL 120 All questions include answers and detailed rationales
,Section A - CELL Structure AND Function
Q1.
In a cell actively synthesizing large amounts of steroid hormones, which organelle would
be most prominent, and why?
A. Rough endoplasmic reticulum, because B. Smooth endoplasmic reticulum, because
steroid hormones are proteins. it contains enzymes for lipid synthesis.
C. Golgi apparatus, because it modifies D. Peroxisomes, because they detoxify
steroid hormones. steroid intermediates.
Correct: B - Smooth endoplasmic reticulum, because it contains enzymes for lipid
synthesis.
Rationale:Steroid hormones are lipid-based; smooth ER is the primary site for lipid and
steroid synthesis. Rough ER is for protein synthesis, Golgi modifies/packages proteins, and
peroxisomes handle oxidation, not steroid synthesis.
Why the other answers are wrong:
A. Rough ER is involved in protein synthesis, not lipid-based steroid hormones.
C. Golgi apparatus primarily processes proteins, not lipids.
D. Peroxisomes are involved in fatty acid oxidation, not steroid synthesis.
Reference: Tortora & Derrickson, Principles of Anatomy and Physiology, 15th ed., Ch. 3
Q2.
Which tissue type is characterized by a calcified extracellular matrix and is the primary
structural support in the adult skeleton?
A. Hyaline cartilage B. Compact bone
C. Dense regular connective tissue D. Elastic cartilage
Correct: B - Compact bone
Rationale:Compact bone has a calcified matrix and bears weight, forming the diaphysis.
Hyaline cartilage is not calcified in adults except at joints; dense regular tissue is for tension;
elastic cartilage is flexible.
Why the other answers are wrong:
A. Hyaline cartilage is not calcified and is found at joints, not as primary support.
C. Dense regular connective tissue is fibrous, not calcified.
D. Elastic cartilage provides flexibility, not weight-bearing support.
Reference: Marieb & Hoehn, Human Anatomy & Physiology, 11th ed., Ch. 4
Page 3
, Section A - CELL Structure AND Function
Q3.
A patient presents with skin that appears blue (cyanosis). Which layer of the epidermis is
most directly responsible for the normal color of skin, and what causes the blue
appearance?
A. Stratum corneum; increased melanin B. Stratum basale; increased blood flow
production
C. Stratum corneum; decreased oxygenated D. Stratum basale; decreased melanin
hemoglobin production
Correct: C - Stratum corneum; decreased oxygenated hemoglobin
Rationale:Skin color is influenced by blood in the dermis, visible through the translucent
stratum corneum. Cyanosis results from decreased oxygenated hemoglobin, giving a blue
tint. Melanin in stratum basale affects pigmentation, not cyanosis.
Why the other answers are wrong:
A. Increased melanin causes hyperpigmentation, not cyanosis.
B. Increased blood flow causes redness, not blue tint.
D. Decreased melanin causes lighter skin, not blue appearance.
Reference: Tortora & Derrickson, Principles of Anatomy and Physiology, 15th ed., Ch. 5
Q4.
Which type of bone cell is primarily responsible for the resorption of bone matrix during
the remodeling process?
A. Osteoblast B. Osteocyte
C. Osteoclast D. Osteogenic cell
Correct: C - Osteoclast
Rationale:Osteoclasts are large, multinucleated cells that secrete acids and enzymes to
dissolve bone matrix. Osteoblasts form bone, osteocytes maintain it, and osteogenic cells are
stem cells.
Why the other answers are wrong:
A. Osteoblasts are bone-forming cells, not resorptive.
B. Osteocytes are mature bone cells that maintain matrix.
D. Osteogenic cells are undifferentiated stem cells.
Reference: OpenStax, Anatomy and Physiology, 2nd ed., Ch. 6
Q5.
Which cell junction type is most critical for preventing the passage of molecules between
epithelial cells in the small intestine?
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