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NTS MCQs

National Testing Service — Complete MCQ Bank

262 Questions
Exam Preparation Guide

How to prepare for NTS

NTS tests evaluate aptitude, analytical reasoning, quantitative ability, English and subject knowledge for admissions, scholarships and recruitment.

EnglishQuantitative SkillsAnalytical ReasoningSubject Knowledge
Practice under a timer and review weak areas after every test to improve both speed and accuracy.
NTS preparation illustration
131

Which gas exchange membrane structure in the lungs maximizes surface area for efficient breathing?

  • ABronchi
  • BAlveoli
  • CTrachea
  • DPleura
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Correct Answer: Option B — Alveoli
Explanation: Alveoli are tiny balloon like air sacs in the lungs that maximize surface area for efficient gas exchange allowing oxygen to enter and carbon dioxide to exit the blood.
Submitted by: PaperMCQs
132

Which soft tissue found inside bones is responsible for producing new blood cells?

  • ACartilage
  • BBone marrow
  • CLigament
  • DPeriosteum
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Correct Answer: Option B — Bone marrow
Explanation: Bone marrow found inside certain bones is responsible for producing new red and white blood cells as well as platelets essential for maintaining healthy blood composition.
Submitted by: PaperMCQs
133

Which flexible connective tissue cushions joints and is found in structures like the ear and nose?

  • ATendon
  • BLigament
  • CCartilage
  • DBone marrow
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Correct Answer: Option C — Cartilage
Explanation: Cartilage is a flexible connective tissue that cushions joints reduces friction between bones and provides structural support in areas like the ear and nose.
Submitted by: PaperMCQs
134

Which chamber of the heart pumps oxygenated blood out to the rest of the body?

  • ARight atrium
  • BRight ventricle
  • CLeft atrium
  • DLeft ventricle
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Correct Answer: Option D — Left ventricle
Explanation: The left ventricle pumps oxygenated blood received from the lungs out to the rest of the body through the aorta making it the heart's most muscular chamber.
Submitted by: PaperMCQs
135

Which chamber of the heart receives deoxygenated blood from the body before sending it to the lungs?

  • ALeft atrium
  • BRight atrium
  • CLeft ventricle
  • DRight ventricle
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Correct Answer: Option B — Right atrium
Explanation: The right atrium receives deoxygenated blood returning from the body and passes it to the right ventricle which then pumps it to the lungs for oxygenation.
Submitted by: PaperMCQs
136

Which tiny blood vessels allow the exchange of oxygen nutrients and waste between blood and body tissues?

  • AArteries
  • BVeins
  • CCapillaries
  • DVenules
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Correct Answer: Option C — Capillaries
Explanation: Capillaries are tiny thin walled blood vessels that allow the exchange of oxygen nutrients and waste products between the blood and surrounding body tissues at the cellular level.
Submitted by: PaperMCQs
137

Which blood vessels carry deoxygenated blood back to the heart from body tissues?

  • AArteries
  • BVeins
  • CCapillaries
  • DArterioles
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Correct Answer: Option B — Veins
Explanation: Veins carry deoxygenated blood back to the heart from body tissues and contain valves to prevent backward flow especially important in the limbs against gravity.
Submitted by: PaperMCQs
138

Which blood vessels carry oxygenated blood away from the heart to the rest of the body?

  • AVeins
  • BArteries
  • CCapillaries
  • DVenules
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Correct Answer: Option B — Arteries
Explanation: Arteries carry oxygenated blood away from the heart to various tissues and organs throughout the body with the aorta being the largest and most significant artery.
Submitted by: PaperMCQs
139

Which structure in the heart prevents the backward flow of blood between chambers?

  • AValves
  • BArteries
  • CVeins
  • DCapillaries
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Correct Answer: Option A — Valves
Explanation: Heart valves prevent the backward flow of blood between chambers ensuring efficient one directional circulation throughout the cardiovascular system during each heartbeat.
Submitted by: PaperMCQs
140

Which muscle separates the chest cavity from the abdominal cavity and assists in breathing?

  • ADiaphragm
  • BIntercostal muscles
  • CTrapezius
  • DBicep
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Correct Answer: Option A — Diaphragm
Explanation: The diaphragm is a dome shaped muscle that separates the chest cavity from the abdominal cavity and contracts and relaxes to facilitate inhalation and exhalation.
Submitted by: PaperMCQs