GCU BIO 201 EXAM 4
ACTUAL EXAM 2026-2027
Human Anatomy & Physiology I
Complete Exam-Style Questions with 100% Verified Answers
80 Questions | Already Graded A+ | 100% Verified
Grand Canyon University
Muscular System – Skeletal, Cardiac & Smooth Muscle
Sliding Filament Theory | Excitation-Contraction Coupling | Muscle Fiber Types
Neuromuscular Junction | Lever Systems | Major Skeletal Muscles
, TABLE OF CONTENTS
Section 1: Muscle Tissue Classification & Structure (Q1–Q8)
Section 2: Skeletal Muscle Microscopic Anatomy (Q9–Q16)
Section 3: Sliding Filament Theory & Cross-Bridge Cycling (Q17–Q26)
Section 4: Neuromuscular Junction & Excitation-Contraction Coupling (Q27–Q36)
Section 5: Energy Metabolism in Muscle Contraction (Q37–Q42)
Section 6: Muscle Fiber Types & Motor Unit Recruitment (Q43–Q50)
Section 7: Smooth & Cardiac Muscle Physiology (Q51–Q58)
Section 8: Lever Systems & Biomechanics (Q59–Q64)
Section 9: Major Skeletal Muscles – Head, Neck & Trunk (Q65–Q72)
Section 10: Major Skeletal Muscles – Upper & Lower Limb (Q73–Q80)
Answer Key with Rationales
, SECTION 1: Muscle Tissue Classification & Structure (Q1–Q8)
Q1. Which of the following is NOT a characteristic of skeletal muscle tissue?
A) Striated appearance under microscopy
B) Voluntary control
C) Multinucleated cells
D) Autorhythmic contraction
Rationale: Skeletal muscle is striated, voluntary, and multinucleated. Cardiac muscle is
autorhythmic; skeletal muscle requires neural stimulation from somatic motor neurons to
initiate contraction.
Q2. The connective tissue wrapping that surrounds an individual skeletal muscle fiber is called
the:
A) Epimysium
B) Perimysium
C) Endomysium
D) Deep fascia
Rationale: The endomysium is the delicate connective tissue sheath surrounding each
muscle fiber (cell). The epimysium wraps the entire muscle, and the perimysium bundles
fascicles together.
Q3. Which connective tissue layer bundles muscle fibers into fascicles?
A) Epimysium
B) Perimysium
C) Endomysium
D) Tendon sheath
Rationale: Perimysium is the connective tissue layer that groups individual muscle
fibers into bundles called fascicles. Each fascicle contains numerous muscle fibers, and
multiple fascicles make up the whole muscle.
Q4. A muscle tendon is formed by the convergence of which connective tissue layer?
A) Endomysium only
B) Perimysium only
C) Epimysium only
D) All three connective tissue layers (endo-, peri-, and epimysium)
Rationale: At the ends of the muscle, all three connective tissue layers (endomysium,
perimysium, and epimysium) converge to form the tendon, which attaches the muscle to
bone.
Q5. Which type of muscle tissue is found in the walls of hollow internal organs such as the
intestines?
A) Skeletal muscle
B) Cardiac muscle
ACTUAL EXAM 2026-2027
Human Anatomy & Physiology I
Complete Exam-Style Questions with 100% Verified Answers
80 Questions | Already Graded A+ | 100% Verified
Grand Canyon University
Muscular System – Skeletal, Cardiac & Smooth Muscle
Sliding Filament Theory | Excitation-Contraction Coupling | Muscle Fiber Types
Neuromuscular Junction | Lever Systems | Major Skeletal Muscles
, TABLE OF CONTENTS
Section 1: Muscle Tissue Classification & Structure (Q1–Q8)
Section 2: Skeletal Muscle Microscopic Anatomy (Q9–Q16)
Section 3: Sliding Filament Theory & Cross-Bridge Cycling (Q17–Q26)
Section 4: Neuromuscular Junction & Excitation-Contraction Coupling (Q27–Q36)
Section 5: Energy Metabolism in Muscle Contraction (Q37–Q42)
Section 6: Muscle Fiber Types & Motor Unit Recruitment (Q43–Q50)
Section 7: Smooth & Cardiac Muscle Physiology (Q51–Q58)
Section 8: Lever Systems & Biomechanics (Q59–Q64)
Section 9: Major Skeletal Muscles – Head, Neck & Trunk (Q65–Q72)
Section 10: Major Skeletal Muscles – Upper & Lower Limb (Q73–Q80)
Answer Key with Rationales
, SECTION 1: Muscle Tissue Classification & Structure (Q1–Q8)
Q1. Which of the following is NOT a characteristic of skeletal muscle tissue?
A) Striated appearance under microscopy
B) Voluntary control
C) Multinucleated cells
D) Autorhythmic contraction
Rationale: Skeletal muscle is striated, voluntary, and multinucleated. Cardiac muscle is
autorhythmic; skeletal muscle requires neural stimulation from somatic motor neurons to
initiate contraction.
Q2. The connective tissue wrapping that surrounds an individual skeletal muscle fiber is called
the:
A) Epimysium
B) Perimysium
C) Endomysium
D) Deep fascia
Rationale: The endomysium is the delicate connective tissue sheath surrounding each
muscle fiber (cell). The epimysium wraps the entire muscle, and the perimysium bundles
fascicles together.
Q3. Which connective tissue layer bundles muscle fibers into fascicles?
A) Epimysium
B) Perimysium
C) Endomysium
D) Tendon sheath
Rationale: Perimysium is the connective tissue layer that groups individual muscle
fibers into bundles called fascicles. Each fascicle contains numerous muscle fibers, and
multiple fascicles make up the whole muscle.
Q4. A muscle tendon is formed by the convergence of which connective tissue layer?
A) Endomysium only
B) Perimysium only
C) Epimysium only
D) All three connective tissue layers (endo-, peri-, and epimysium)
Rationale: At the ends of the muscle, all three connective tissue layers (endomysium,
perimysium, and epimysium) converge to form the tendon, which attaches the muscle to
bone.
Q5. Which type of muscle tissue is found in the walls of hollow internal organs such as the
intestines?
A) Skeletal muscle
B) Cardiac muscle
