ATI TEAS A&P 2026/2027 Study Guide | ACTUAL
TEAS Anatomy & Physiology Practice Questions &
Answers, Latest Updated Exam Prep, Verified Answers,
Detailed Rationales, Human Body Systems, Anatomy,
Physiology, Body Organization & Comprehensive
Review
Question 1: Which anatomical plane divides the body into equal
left and right halves?
A. Frontal plane
B. Transverse plane
C. Midsagittal plane
D. Oblique plane
CORRECT ANSWER: C. Midsagittal plane
Rationale: The midsagittal plane passes vertically through the midline of
the body, creating equal left and right halves. The frontal plane divides the
body into anterior and posterior portions, while the transverse plane
separates superior and inferior sections.
Question 2: Which directional term describes a structure located
closer to the point of attachment of a limb to the trunk?
A. Distal
B. Proximal
C. Lateral
D. Medial
CORRECT ANSWER: B. Proximal
Rationale: Proximal refers to a position nearer to the point of origin or
attachment of a limb or structure. Distal means farther from the point of
attachment, while medial and lateral refer to positions relative to the
midline.
Question 3: In which body cavity is the heart located?
A. Cranial cavity
B. Abdominal cavity
C. Thoracic cavity
D. Pelvic cavity
,CORRECT ANSWER: C. Thoracic cavity
Rationale: The heart is located in the thoracic cavity, specifically within the
mediastinum. The cranial cavity contains the brain, while the abdominal
and pelvic cavities house digestive and reproductive organs.
Question 4: Which serous membrane lines the wall of the thoracic
cavity?
A. Visceral pleura
B. Parietal pleura
C. Visceral pericardium
D. Parietal peritoneum
CORRECT ANSWER: B. Parietal pleura
Rationale: The parietal pleura lines the internal surface of the thoracic
cavity. The visceral pleura covers the lungs directly, while the pericardium
surrounds the heart and the peritoneum lines the abdominopelvic cavity.
Question 5: Which region of the abdomen is located in the upper
right quadrant?
A. Epigastric region
B. Right hypochondriac region
C. Right lumbar region
D. Right iliac region
CORRECT ANSWER: B. Right hypochondriac region
Rationale: The right hypochondriac region is located in the upper right
portion of the abdomen, beneath the ribs on the right side. The epigastric
region is centrally located in the upper abdomen.
Question 6: Which type of feedback mechanism is most common in
the human body for maintaining homeostasis?
A. Positive feedback
B. Negative feedback
C. Feedforward control
D. Neutral feedback
CORRECT ANSWER: B. Negative feedback
,Rationale: Negative feedback mechanisms reverse the direction of a change
to restore the body to its normal set point. Positive feedback amplifies
changes and is less common, typically occurring during specific events like
childbirth.
Question 7: What is the smallest structural and functional unit of
the human body?
A. Tissue
B. Organelle
C. Cell
D. Molecule
CORRECT ANSWER: C. Cell
Rationale: The cell is the smallest unit capable of performing all life
processes. Tissues are groups of similar cells, organs are composed of
multiple tissues, and organelles are structures within cells.
Question 8: Which body system is primarily responsible for
transporting oxygen and nutrients to body tissues?
A. Respiratory system
B. Cardiovascular system
C. Lymphatic system
D. Endocrine system
CORRECT ANSWER: B. Cardiovascular system
Rationale: The cardiovascular system, consisting of the heart and blood
vessels, transports oxygen, nutrients, hormones, and waste products
throughout the body. The respiratory system handles gas exchange but
does not circulate blood.
Question 9: Which of the following is NOT a primary function of
the skeletal system?
A. Protection of internal organs
B. Production of hormones
C. Support and framework
D. Mineral storage
CORRECT ANSWER: B. Production of hormones
, Rationale: While bones do produce some hormones (such as osteocalcin),
the primary functions of the skeletal system are support, protection,
movement facilitation, mineral storage, and blood cell production.
Hormone production is primarily the function of the endocrine system.
Question 10: Which type of bone tissue is characterized by being
dense and having a repeating structural unit called an osteon?
A. Spongy bone
B. Compact bone
C. Cartilage
D. Fibrous connective tissue
CORRECT ANSWER: B. Compact bone
Rationale: Compact bone is dense and organized into osteons (Haversian
systems), which consist of concentric lamellae surrounding a central canal.
Spongy bone has a less organized, trabecular structure.
Question 11: Which type of bone cell is responsible for bone
resorption?
A. Osteoblast
B. Osteocyte
C. Osteoclast
D. Chondrocyte
CORRECT ANSWER: C. Osteoclast
Rationale: Osteoclasts are large, multinucleated cells that break down bone
tissue by secreting acids and enzymes. Osteoblasts form new bone,
osteocytes maintain mature bone, and chondrocytes produce cartilage.
Question 12: Which of the following bones is classified as a long
bone?
A. Sternum
B. Vertebra
C. Femur
D. Carpal
CORRECT ANSWER: C. Femur
TEAS Anatomy & Physiology Practice Questions &
Answers, Latest Updated Exam Prep, Verified Answers,
Detailed Rationales, Human Body Systems, Anatomy,
Physiology, Body Organization & Comprehensive
Review
Question 1: Which anatomical plane divides the body into equal
left and right halves?
A. Frontal plane
B. Transverse plane
C. Midsagittal plane
D. Oblique plane
CORRECT ANSWER: C. Midsagittal plane
Rationale: The midsagittal plane passes vertically through the midline of
the body, creating equal left and right halves. The frontal plane divides the
body into anterior and posterior portions, while the transverse plane
separates superior and inferior sections.
Question 2: Which directional term describes a structure located
closer to the point of attachment of a limb to the trunk?
A. Distal
B. Proximal
C. Lateral
D. Medial
CORRECT ANSWER: B. Proximal
Rationale: Proximal refers to a position nearer to the point of origin or
attachment of a limb or structure. Distal means farther from the point of
attachment, while medial and lateral refer to positions relative to the
midline.
Question 3: In which body cavity is the heart located?
A. Cranial cavity
B. Abdominal cavity
C. Thoracic cavity
D. Pelvic cavity
,CORRECT ANSWER: C. Thoracic cavity
Rationale: The heart is located in the thoracic cavity, specifically within the
mediastinum. The cranial cavity contains the brain, while the abdominal
and pelvic cavities house digestive and reproductive organs.
Question 4: Which serous membrane lines the wall of the thoracic
cavity?
A. Visceral pleura
B. Parietal pleura
C. Visceral pericardium
D. Parietal peritoneum
CORRECT ANSWER: B. Parietal pleura
Rationale: The parietal pleura lines the internal surface of the thoracic
cavity. The visceral pleura covers the lungs directly, while the pericardium
surrounds the heart and the peritoneum lines the abdominopelvic cavity.
Question 5: Which region of the abdomen is located in the upper
right quadrant?
A. Epigastric region
B. Right hypochondriac region
C. Right lumbar region
D. Right iliac region
CORRECT ANSWER: B. Right hypochondriac region
Rationale: The right hypochondriac region is located in the upper right
portion of the abdomen, beneath the ribs on the right side. The epigastric
region is centrally located in the upper abdomen.
Question 6: Which type of feedback mechanism is most common in
the human body for maintaining homeostasis?
A. Positive feedback
B. Negative feedback
C. Feedforward control
D. Neutral feedback
CORRECT ANSWER: B. Negative feedback
,Rationale: Negative feedback mechanisms reverse the direction of a change
to restore the body to its normal set point. Positive feedback amplifies
changes and is less common, typically occurring during specific events like
childbirth.
Question 7: What is the smallest structural and functional unit of
the human body?
A. Tissue
B. Organelle
C. Cell
D. Molecule
CORRECT ANSWER: C. Cell
Rationale: The cell is the smallest unit capable of performing all life
processes. Tissues are groups of similar cells, organs are composed of
multiple tissues, and organelles are structures within cells.
Question 8: Which body system is primarily responsible for
transporting oxygen and nutrients to body tissues?
A. Respiratory system
B. Cardiovascular system
C. Lymphatic system
D. Endocrine system
CORRECT ANSWER: B. Cardiovascular system
Rationale: The cardiovascular system, consisting of the heart and blood
vessels, transports oxygen, nutrients, hormones, and waste products
throughout the body. The respiratory system handles gas exchange but
does not circulate blood.
Question 9: Which of the following is NOT a primary function of
the skeletal system?
A. Protection of internal organs
B. Production of hormones
C. Support and framework
D. Mineral storage
CORRECT ANSWER: B. Production of hormones
, Rationale: While bones do produce some hormones (such as osteocalcin),
the primary functions of the skeletal system are support, protection,
movement facilitation, mineral storage, and blood cell production.
Hormone production is primarily the function of the endocrine system.
Question 10: Which type of bone tissue is characterized by being
dense and having a repeating structural unit called an osteon?
A. Spongy bone
B. Compact bone
C. Cartilage
D. Fibrous connective tissue
CORRECT ANSWER: B. Compact bone
Rationale: Compact bone is dense and organized into osteons (Haversian
systems), which consist of concentric lamellae surrounding a central canal.
Spongy bone has a less organized, trabecular structure.
Question 11: Which type of bone cell is responsible for bone
resorption?
A. Osteoblast
B. Osteocyte
C. Osteoclast
D. Chondrocyte
CORRECT ANSWER: C. Osteoclast
Rationale: Osteoclasts are large, multinucleated cells that break down bone
tissue by secreting acids and enzymes. Osteoblasts form new bone,
osteocytes maintain mature bone, and chondrocytes produce cartilage.
Question 12: Which of the following bones is classified as a long
bone?
A. Sternum
B. Vertebra
C. Femur
D. Carpal
CORRECT ANSWER: C. Femur
