, UPDATED FOR 2025-2026
Chapter 1 – The Human Body: An Orientation
MULTIPLE CHOICE
, UPDATED FOR 2025-2026
1. The smallest structural and functional unit of life is:
a. Tissue
b. Organ
c. Cell
d. Organ system
ANS: C
The cell is the basic unit of life.
DIF: Remember
REF: p. 4
OBJ: Identify levels of structural organization in the body
TOP: Human Body Organization
MSC: NCLEX: Physiological Integrity
2. Which plane divides the body into right and left sections?
a. Coronal plane
b. Sagittal plane
c. Transverse plane
d. Horizontal plane
ANS: B
The sagittal plane divides the body into right and left parts.
DIF: Remember
REF: p. 6
OBJ: Define anatomical planes of the body
TOP: Human Body Orientation
MSC: NCLEX: Physiological Integrity
3. The process by which the body maintains a stable internal environment is:
a. Metabolism
b. Homeostasis
c. Circulation
d. Respiration
, UPDATED FOR 2025-2026
ANS: B
Homeostasis is internal balance despite external changes.
DIF: Understand
REF: p. 8
OBJ: Explain homeostasis
TOP: Human Body Functions
MSC: NCLEX: Physiological Adaptation
4. Which body cavity contains the lungs?
a. Abdominal cavity
b. Thoracic cavity
c. Pelvic cavity
d. Cranial cavity
ANS: B
The thoracic cavity contains lungs and heart.
DIF: Remember
REF: p. 10
OBJ: Identify body cavities
TOP: Body Cavities
MSC: NCLEX: Physiological Integrity
5. Which directional term means “toward the head”?
a. Inferior
b. Superior
c. Lateral
d. Distal
ANS: B
Superior means above or toward the head.
DIF: Remember
REF: p. 7
OBJ: Define anatomical terminology