ATI TEAS 7
Anatomy
1. What is the difference between a ventral and dorsal root of a spinal nerve?
- A. Ventral carries motor, dorsal carries sensory information.
- B. Ventral carries sensory, dorsal carries motor information.
- C. Ventral is larger, dorsal is smaller.
- D. Ventral is located anteriorly, dorsal is posteriorly.
Correct answer: A
Rationale: The correct answer is A: 'Ventral carries motor, dorsal carries sensory information.' Ventral roots of spinal nerves contain motor fibers that carry signals from the central nervous system to muscles and glands, controlling movement and function. Dorsal roots, on the other hand, contain sensory fibers that transmit information such as touch, pain, and temperature from the peripheral nervous system to the central nervous system for processing. Understanding this distinction is crucial for comprehending how information is transmitted and processed in the nervous system.
2. What term describes the bending of waves around obstacles or through openings?
- A. Reflection
- B. Refraction
- C. Diffraction
- D. Absorption
Correct answer: c
Rationale: Diffraction occurs when waves bend around obstacles or spread after passing through small openings.
3. She takes pride in saying that the hospital has a decentralized structure. Which of the
- A. Flat organization
- B. Participatory approach
- C. Shared governance
- D. Tall organization
Correct answer: B
Rationale: The correct answer is B: 'Participatory approach.' In a decentralized structure, decision-making authority is dispersed throughout the organization rather than being concentrated at the top. A participatory approach involves employees at all levels having a say in decisions that affect their work, fostering collaboration and empowerment. This contrasts with a tall organization, which has many layers of management and a more centralized decision-making process. While shared governance can involve decentralized decision-making, it specifically refers to a model where nurses and other healthcare professionals have a voice in shaping policies and practices within their organization, which is not necessarily the same as a decentralized structure.
4. What happens when an atom loses an electron?
- A. It becomes a molecule.
- B. It gains a positive charge and becomes an ion.
- C. It changes its element identity.
- D. Nothing happens, it remains neutral.
Correct answer: B
Rationale: It gains a positive charge and becomes an ion. Losing an electron disrupts the charge balance, leaving the atom with more protons than electrons and a positive charge.
5. Which of the following describes a scalar quantity?
- A. Velocity
- B. Acceleration
- C. Force
- D. Speed
Correct answer: d
Rationale: Speed is a scalar quantity as it only indicates how fast an object is moving without any directional information.
6. What is the general formula for an alkene?
- A. CnH2n+2
- B. CnH2n
- C. CnH2n-2
- D. CnH2n+1
Correct answer: B
Rationale: The general formula for an alkene is \(C_nH_{2n}\), indicating the presence of a double bond between carbon atoms.
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