Anatomy & Physiology Q&A 2025 | 200 Realistic Practice Questions + Correct Answers Covering Skeletal System, Muscular System, Nervous System | A&P Test Bank PDF | Nursing School, Pre-Med, Biology & Healthcare Exam Prep

Anatomy & Physiology Q&A 2025 | 200 Realistic
Practice Questions + Correct Answers Covering
Skeletal System, Muscular System, Nervous System |
A&P Test Bank PDF | Nursing School, Pre-Med, Biology
& Healthcare Exam Prep
QUESTION 1:
Which bone is responsible for the majority of the skull's structure and houses the brain?
• A) Mandible
• B) Occipital bone
• C) Maxilla
• D) Zygomatic bone
ANSWER:: B
Rationale: The occipital bone forms the back and base of the skull, protecting the brain.


QUESTION 2:
Which condition is characterized by a decrease in bone density and an increased risk of
fractures?
• A) Osteoarthritis
• B) Osteoporosis
• C) Osteosarcoma
• D) Paget's disease
ANSWER:: B
Rationale: Osteoporosis leads to weakened bones and increased fracture risk.


QUESTION 3:
What is the primary structural unit of compact bone called?
• A) Osteon
• B) Haversian system
• C) Trabecula
• D) Lamella
ANSWER:: B
Rationale: The Haversian system, or osteon, is the fundamental functional unit of
compact bone.

,QUESTION 4:
Which type of joint allows for both flexion and extension as well as a limited range of
rotation?
• A) Hinge joint
• B) Modified hinge joint
• C) Ball-and-socket joint
• D) Pivot joint
ANSWER:: B
Rationale: Modified hinge joints allow for flexion, extension, and slight rotation.


QUESTION 5:
What is the primary function of the epiphyseal plate in growing bones?
• A) Provide stability
• B) Facilitate longitudinal growth
• C) Store calcium
• D) Connect muscles to bones
ANSWER:: B
Rationale: The epiphyseal plate, or growth plate, is responsible for the lengthening of
bones during development.


Topic 5: Muscular System
QUESTION 6:
Which protein is primarily responsible for muscle contraction?
• A) Actin
• B) Myosin
• C) Troponin
• D) Tropomyosin
ANSWER:: B
Rationale: Myosin interacts with actin to facilitate muscle contraction.


QUESTION 7:
What is the term for the functional connection between a motor neuron and the muscle
fiber it innervates?

, • A) Synapse
• B) Neuromuscular junction
• C) Synaptic cleft
• D) Motor end plate
ANSWER:: B
Rationale: The neuromuscular junction is where the motor neuron communicates with
the muscle fiber.


QUESTION 8:
Which type of muscle fiber is characterized by fast contraction and high fatigue
resistance?
• A) Type I fibers
• B) Type IIa fibers
• C) Type IIb fibers
• D) Slow-twitch fibers
ANSWER:: B
Rationale: Type IIa fibers are fast-twitch fibers with a moderate resistance to fatigue.


QUESTION 9:
What is the primary energy source for muscle contractions during short, intense
activities?
• A) Fatty acids
• B) ATP and creatine phosphate
• C) Glucose
• D) Glycogen
ANSWER:: B
Rationale: ATP and creatine phosphate provide immediate energy for short, high-
intensity activities.


QUESTION 10:
What is the role of the sarcoplasmic reticulum in muscle cells?
• A) Produce energy
• B) Store and release calcium ions

, • C) Conduct nerve impulses
• D) Transport nutrients
ANSWER:: B
Rationale: The sarcoplasmic reticulum stores calcium ions, which are essential for
muscle contraction.


Topic 6: Nervous System
QUESTION 11:
What is the primary function of myelin sheaths?
• A) Increase the speed of nerve impulse transmission
• B) Protect nerve cells
• C) Release neurotransmitters
• D) Facilitate muscle contractions
ANSWER:: A
Rationale: Myelin sheaths insulate axons, increasing the speed of electrical impulses.


QUESTION 12:
Which part of the brain is primarily responsible for coordinating voluntary movements?
• A) Cerebrum
• B) Brainstem
• C) Cerebellum
• D) Limbic system
ANSWER:: C
Rationale: The cerebellum coordinates voluntary movements and balance.


QUESTION 13:
What is the primary neurotransmitter involved in muscle contraction?
• A) Norepinephrine
• B) Acetylcholine
• C) Dopamine
• D) Serotonin
ANSWER:: B