ATI Anatomy and Physiology Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A Instant
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1. Which anatomical plane divides the body into equal right and left portions?
A. Frontal
B. Transverse
C. Midsagittal
D. Oblique
Answer: Midsagittal plane
Rationale: The midsagittal plane divides the body into equal right and left
halves.
2. Which organelle is primarily responsible for producing ATP within a cell?
A. Ribosome
B. Mitochondrion
C. Lysosome
D. Golgi apparatus
Answer: Mitochondrion
Rationale: Mitochondria generate most of the cell's ATP through cellular
respiration.
3. Which tissue type lines body surfaces and cavities?
A. Connective tissue
B. Muscle tissue
, C. Nervous tissue
D. Epithelial tissue
Answer: Epithelial tissue
Rationale: Epithelial tissue covers body surfaces, lines cavities and organs, and
forms many glands.
4. Which electrolyte is the major intracellular cation?
A. Sodium
B. Calcium
C. Potassium
D. Chloride
Answer: Potassium
Rationale: Potassium is the primary positively charged ion inside cells, while
sodium is primarily extracellular.
5. Which structure controls what enters and leaves the cell?
A. Nucleus
B. Cell membrane
C. Ribosome
D. Centriole
Answer: Cell membrane
Rationale: The selectively permeable cell membrane regulates movement of
substances into and out of the cell.
6. Which process moves water across a selectively permeable membrane?
A. Filtration
B. Osmosis
C. Active transport
D. Endocytosis
Answer: Osmosis
, Rationale: Osmosis is the movement of water across a selectively permeable
membrane toward an area of higher solute concentration.
7. Which organelle contains the cell's genetic material?
A. Nucleus
B. Lysosome
C. Ribosome
D. Golgi apparatus
Answer: Nucleus
Rationale: The nucleus contains most of the cell's DNA and regulates cellular
activities.
8. Which body system is primarily responsible for transporting oxygen and
nutrients?
A. Respiratory system
B. Cardiovascular system
C. Nervous system
D. Endocrine system
Answer: Cardiovascular system
Rationale: The cardiovascular system circulates blood throughout the body,
delivering oxygen, nutrients, hormones, and other substances.
9. Which chamber of the heart pumps oxygenated blood into the systemic
circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Answer: Left ventricle
Rationale: The left ventricle pumps oxygenated blood through the aorta to the
systemic circulation.
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A Instant
Download Pdf
1. Which anatomical plane divides the body into equal right and left portions?
A. Frontal
B. Transverse
C. Midsagittal
D. Oblique
Answer: Midsagittal plane
Rationale: The midsagittal plane divides the body into equal right and left
halves.
2. Which organelle is primarily responsible for producing ATP within a cell?
A. Ribosome
B. Mitochondrion
C. Lysosome
D. Golgi apparatus
Answer: Mitochondrion
Rationale: Mitochondria generate most of the cell's ATP through cellular
respiration.
3. Which tissue type lines body surfaces and cavities?
A. Connective tissue
B. Muscle tissue
, C. Nervous tissue
D. Epithelial tissue
Answer: Epithelial tissue
Rationale: Epithelial tissue covers body surfaces, lines cavities and organs, and
forms many glands.
4. Which electrolyte is the major intracellular cation?
A. Sodium
B. Calcium
C. Potassium
D. Chloride
Answer: Potassium
Rationale: Potassium is the primary positively charged ion inside cells, while
sodium is primarily extracellular.
5. Which structure controls what enters and leaves the cell?
A. Nucleus
B. Cell membrane
C. Ribosome
D. Centriole
Answer: Cell membrane
Rationale: The selectively permeable cell membrane regulates movement of
substances into and out of the cell.
6. Which process moves water across a selectively permeable membrane?
A. Filtration
B. Osmosis
C. Active transport
D. Endocytosis
Answer: Osmosis
, Rationale: Osmosis is the movement of water across a selectively permeable
membrane toward an area of higher solute concentration.
7. Which organelle contains the cell's genetic material?
A. Nucleus
B. Lysosome
C. Ribosome
D. Golgi apparatus
Answer: Nucleus
Rationale: The nucleus contains most of the cell's DNA and regulates cellular
activities.
8. Which body system is primarily responsible for transporting oxygen and
nutrients?
A. Respiratory system
B. Cardiovascular system
C. Nervous system
D. Endocrine system
Answer: Cardiovascular system
Rationale: The cardiovascular system circulates blood throughout the body,
delivering oxygen, nutrients, hormones, and other substances.
9. Which chamber of the heart pumps oxygenated blood into the systemic
circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Answer: Left ventricle
Rationale: The left ventricle pumps oxygenated blood through the aorta to the
systemic circulation.
