ATI TEAS Version 7 – Science — Original Latest Version Study Set

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Sample questions from ATI TEAS Version 7 – Science — Original Latest Version Study Set

This material has 50 questions with answers and rationales. Here are the first 5.

1. 1.**Which of the following chambers of the heart pumps oxygenated blood into the aorta?**

   • A.Right atrium.
   • B.Right ventricle.
   • C.Left atrium.
   • D.Left ventricle.

   Rationale: The left ventricle pumps oxygen-rich blood into the aorta for delivery to the body. The right ventricle sends blood to the lungs, while both atria receive blood rather than pump it into the aorta. Remember that the left side of the heart serves the systemic circulation.

2. 2.**Which of the following structures is the primary site of gas exchange in the lungs?**

   • A.Alveoli.
   • B.Pleura.
   • C.Bronchi.
   • D.Trachea.

   Rationale: Alveoli have thin walls and are surrounded by capillaries, allowing oxygen and carbon dioxide to diffuse between air and blood. The trachea and bronchi conduct air, while the pleura is a membrane surrounding the lungs. Gas exchange occurs across the alveolar-capillary membrane.

3. 3.**Which of the following is the functional unit of the kidney?**

   • A.Neuron.
   • B.Nephron.
   • C.Villus.
   • D.Alveolus.

   Rationale: The nephron filters blood and contributes to urine formation. A neuron transmits nerve signals, an alveolus supports lung gas exchange, and a villus increases intestinal absorptive surface area. Kidney function is carried out by many nephrons.

4. 4.**Which of the following hormones lowers blood glucose by promoting cellular uptake of glucose?**

   • A.Glucagon.
   • B.Cortisol.
   • C.Insulin.
   • D.Thyroxine.

   Answer and rationale are in the full material.

5. 5.**Which of the following is a major function of red bone marrow?**

   • A.Filtering lymph.
   • B.Producing blood cells.
   • C.Storing bile.
   • D.Secreting digestive enzymes.

   Answer and rationale are in the full material.