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Nursing Elites

ATI TEAS 7

anatomy

1. Which component of the nervous system is responsible for controlling voluntary movements, such as the contraction of skeletal muscles?

Correct answer: c

Rationale: The correct answer is C, the somatic nervous system. The somatic nervous system is responsible for controlling voluntary movements, such as the contraction of skeletal muscles. This system consists of motor neurons that send signals from the central nervous system to the skeletal muscles, allowing us to consciously control our movements. The autonomic nervous system (A) controls involuntary actions like heart rate and digestion, the peripheral nervous system (B) includes all nerves outside of the brain and spinal cord, and the sympathetic nervous system (D) is a division of the autonomic nervous system responsible for the fight-or-flight response. Therefore, the somatic nervous system is specifically involved in voluntary movements.

2. The three main types of muscle tissue in the human body are:

Correct answer: A

Rationale: The correct answer is A: Smooth, cardiac, and voluntary skeletal. Smooth muscle is found in the walls of internal organs and blood vessels, cardiac muscle makes up the heart, and voluntary skeletal muscle is attached to the bones and responsible for movement. Choice B is incorrect because cardiac muscle is involuntary, not voluntary. Choice C is incorrect because smooth muscle and cardiac muscle are involuntary, not voluntary. Choice D is incorrect because 'striated' and 'non-striated' refer to the appearance of muscle fibers, not the main types of muscle tissue in the body.

3. What type of intermolecular force is responsible for the high surface tension of water?

Correct answer: A

Rationale: The high surface tension of water is due to the strong hydrogen bonding between water molecules. Hydrogen bonding is a type of intermolecular force that occurs when a hydrogen atom is covalently bonded to a highly electronegative atom (such as oxygen in water) and is attracted to another electronegative atom nearby. This results in a strong attraction between water molecules at the surface, leading to a high surface tension.

4. Based on the passage, the author most likely believes that

Correct answer: C

Rationale: The focus on global efforts, renewable energy, and sustainable practices suggests an optimistic outlook on mitigating climate change, aligning with C.

5. In which medium does light propagate at its highest speed?

Correct answer: A

Rationale: The correct answer is A: 'Air.' Light propagates at its highest speed in a vacuum, which is nearly the same as in air. In a vacuum, light travels at its maximum speed of approximately 299,792 kilometers per second. When light enters a medium like air, water, glass, or diamond, its speed decreases due to interactions with atoms and molecules in the medium. Among the options given, air is the closest medium to a vacuum in terms of light speed. Water, glass, and diamond have higher refractive indices than air, causing light to travel slower in these mediums. This is why air allows light to propagate at its highest speed compared to water, glass, and diamond.

6. Which property of a wave determines its energy?

Correct answer: b

Rationale: Amplitude is directly related to the energy carried by a wave - higher amplitudes correspond to higher energy waves.

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