ANATOMY &
PHYSIOLOGY
MASTER GUIDE
Volume 1
Comprehensive Test Bank, Clinical Applications & Workbook
,Unit 1: Body Plan & Homeostasis
Core Concepts
Anatomy is the study of structure; physiology is the study of function.
Homeostasis is the dynamic equilibrium of the internal environment,
regulated primarily by negative feedback loops involving a receptor, control
center, and effector. Positive feedback loops amplify a response (e.g., labor
contractions). Anatomical terms provide a universal reference framework
for location and direction.
CLINICAL CASE APPLICATION
A 25-year-old marathon runner collapses on a 100°F day. Her skin is hot and
dry, and her core temperature is 105°F. Diagnosis: Heat Stroke. Her negative
feedback mechanisms (sweating and vasodilation) have been overwhelmed
and failed, breaking the homeostatic loop and allowing her core
temperature to rise to fatal levels.
,Practice Test Bank
Q1. Which plane divides the body into equal right and left halves?
A. Midsagittal plane
B. Frontal plane
C. Transverse plane
D. Coronal plane
RATIONALE & ANSWER
A is correct. The midsagittal plane divides the body vertically into equal right and
left halves. A frontal (coronal) plane divides it into anterior and posterior parts.
Q2. In a negative feedback mechanism, what is the role of the effector?
A. To detect the stimulus
B. To process information
C. To carry out the response
D. To set the baseline
RATIONALE & ANSWER
C is correct. The receptor detects the stimulus, the control center (usually the
brain) processes it, and the effector carries out the physical response to reverse the
change.
,Q3. Which of the following organs is located in the thoracic cavity?
A. Liver
B. Stomach
C. Heart
D. Urinary Bladder
RATIONALE & ANSWER
C is correct. The heart and lungs are in the thoracic cavity, which is separated from
the abdominopelvic cavity (containing the liver, stomach, and bladder) by the
diaphragm.
Q4. The wrist is ________ to the elbow.
A. Proximal
B. Distal
C. Superior
D. Medial
RATIONALE & ANSWER
B is correct. Distal means farther from the point of attachment to the trunk. The
wrist is farther from the shoulder (the trunk attachment) than the elbow is.
, Chapter 1 Personal Study Notes
PHYSIOLOGY
MASTER GUIDE
Volume 1
Comprehensive Test Bank, Clinical Applications & Workbook
,Unit 1: Body Plan & Homeostasis
Core Concepts
Anatomy is the study of structure; physiology is the study of function.
Homeostasis is the dynamic equilibrium of the internal environment,
regulated primarily by negative feedback loops involving a receptor, control
center, and effector. Positive feedback loops amplify a response (e.g., labor
contractions). Anatomical terms provide a universal reference framework
for location and direction.
CLINICAL CASE APPLICATION
A 25-year-old marathon runner collapses on a 100°F day. Her skin is hot and
dry, and her core temperature is 105°F. Diagnosis: Heat Stroke. Her negative
feedback mechanisms (sweating and vasodilation) have been overwhelmed
and failed, breaking the homeostatic loop and allowing her core
temperature to rise to fatal levels.
,Practice Test Bank
Q1. Which plane divides the body into equal right and left halves?
A. Midsagittal plane
B. Frontal plane
C. Transverse plane
D. Coronal plane
RATIONALE & ANSWER
A is correct. The midsagittal plane divides the body vertically into equal right and
left halves. A frontal (coronal) plane divides it into anterior and posterior parts.
Q2. In a negative feedback mechanism, what is the role of the effector?
A. To detect the stimulus
B. To process information
C. To carry out the response
D. To set the baseline
RATIONALE & ANSWER
C is correct. The receptor detects the stimulus, the control center (usually the
brain) processes it, and the effector carries out the physical response to reverse the
change.
,Q3. Which of the following organs is located in the thoracic cavity?
A. Liver
B. Stomach
C. Heart
D. Urinary Bladder
RATIONALE & ANSWER
C is correct. The heart and lungs are in the thoracic cavity, which is separated from
the abdominopelvic cavity (containing the liver, stomach, and bladder) by the
diaphragm.
Q4. The wrist is ________ to the elbow.
A. Proximal
B. Distal
C. Superior
D. Medial
RATIONALE & ANSWER
B is correct. Distal means farther from the point of attachment to the trunk. The
wrist is farther from the shoulder (the trunk attachment) than the elbow is.
, Chapter 1 Personal Study Notes
