ATI TEAS Science Questions - Nurselytic

Correct Answer: B

Rationale: The correct answer is 'B: Anterior.' In anatomy, 'anterior' refers to the front of the body, like the kneecap. On the other hand, 'posterior' describes the back of the body.

Choices 'C: Superior' and 'D: Inferior' relate to structures being above or below a reference point, respectively, and are not used to describe the front or back of the body.
Therefore, 'Anterior' is the most appropriate term given the context provided in the question.

Correct Answer: A

Rationale: An ion is an atom that has gained or lost electrons, resulting in a positive or negative charge, making it electrically charged. This term specifically refers to atoms with a net electrical charge. Isotopes are atoms of the same element with different numbers of neutrons, not electrically charged. Molecules are formed when atoms bond together, but they are not necessarily charged. Compounds are substances composed of different elements bonded together, but they may not be electrically charged.

Correct Answer: A

Rationale: The trachea is the structure that bifurcates into the primary bronchi. The trachea is a tube that carries air to and from the lungs. It divides into the left and right primary bronchi at a specific point called the carina, which then further divide into secondary and tertiary bronchi, leading to the bronchioles. The alveoli are the tiny air sacs at the end of the bronchioles where gas exchange occurs, not the structure that bifurcates into the primary bronchi. Bronchioles are smaller airway branches that come after the bronchi but do not bifurcate into them. The larynx, also known as the voice box, is located above the trachea and is responsible for sound production, not the bifurcation into primary bronchi.
Therefore, the correct answer is the trachea.

Correct Answer: B

Rationale: Hemoglobin in red blood cells functions to carry oxygen from the lungs to tissues in the body. It binds to oxygen in the lungs and releases it to the body's cells, ensuring they have an adequate oxygen supply for metabolic processes.
Choice A is incorrect because hemoglobin primarily carries oxygen, not carbon dioxide.
Choice C is incorrect because hemoglobin's role is not related to blood pressure regulation.
Choice D is incorrect because hemoglobin is not involved in the production of white blood cells.

Correct Answer: B

Rationale: Afferent fibers, responsible for carrying sensory information, enter the spinal cord through the posterior (dorsal) aspect. Specifically, they enter through the dorsal roots, located on the back (posterior) side of the spinal cord. This route allows sensory information to be transmitted to the central nervous system for processing and integration.

Choices A, C, and D are incorrect because afferent fibers do not enter the spinal cord through the anterior, ventral, or lateral aspects.