Nursing Elites

1. In which direction do the particles of the medium move in a transverse wave?

• A. Perpendicular to the direction of wave travel
• B. Parallel to the direction of wave travel
• C. In a circular motion
• D. Opposite to the direction of wave travel

Correct answer: a

Rationale: In a transverse wave, particle displacement occurs perpendicular to the direction of wave travel.

2. Fingernails and toenails are made primarily of:

• A. Collagen (Collagen is found in the dermis)
• B. Keratin
• C. Melanin (Melanin provides pigment, not structure)
• D. Sebum (Sebum is an oily substance)

Correct answer: B

Rationale: The correct answer is B: Keratin. Fingernails and toenails are primarily made of a tough protein called keratin. Keratin is a fibrous structural protein that also makes up hair and the outer layer of skin. Collagen, as mentioned in option A, is found in the dermis of the skin and is responsible for providing strength and elasticity to the skin. Melanin, as in option C, is a pigment that gives color to the skin, hair, and eyes, but it does not contribute to the structure of nails. Sebum, as in option D, is an oily substance produced by the sebaceous glands in the skin to moisturize and protect the skin, but it is not a component of nails.

3. The tonsils and adenoids, located in the throat, are part of the:

• A. Lymphatic system
• B. Endocrine system
• C. Respiratory system
• D. Digestive system

Correct answer: A

Rationale: The correct answer is A: "Lymphatic system." The tonsils and adenoids are part of the lymphatic system, which plays a crucial role in the body's immune response. These tissues help trap and fight off bacteria and viruses that enter the body through the mouth and nose. The lymphatic system is responsible for producing white blood cells and antibodies that help protect the body from infections. Therefore, the tonsils and adenoids are essential components of the lymphatic system, not the endocrine, respiratory, or digestive systems.

4. What is the tone of the following sentence: "The presentation was informative and engaging."

• A. Sarcastic
• B. Neutral
• C. Angry
• D. Confused

Correct answer: B

Rationale: The sentence objectively describes the presentation without expressing any specific emotions.

5. The ureters are paired tubes that transport urine from the:

• A. Bladder to the urethra
• B. Kidneys to the bladder
• C. Urethra to the kidneys
• D. Skin to the kidneys

Correct answer: B

Rationale: The correct answer is B: 'Kidneys to the bladder.' The ureters are paired tubes that carry urine from the kidneys to the bladder. Once urine is produced in the kidneys, it travels through the ureters to be stored in the bladder until it is eliminated from the body through the urethra. Option A, 'Bladder to the urethra,' is incorrect because the ureters transport urine from the kidneys to the bladder, not from the bladder to the urethra. Option C, 'Urethra to the kidneys,' and option D, 'Skin to the kidneys,' are both inaccurate as they do not describe the correct direction of urine flow in the urinary system. Understanding the anatomy and function of the urinary system is essential for comprehending how urine is produced and excreted by the body.

6. What is the difference between the atomic number and the mass number of an atom?

• A. The atomic number is the number of protons in the nucleus, while the mass number is the total number of protons and neutrons in the nucleus.
• B. The atomic number is the number of electrons in an atom, while the mass number is the total number of protons and neutrons in the nucleus.
• C. The atomic number is the number of neutrons in the nucleus, while the mass number is the total number of protons and electrons in an atom.
• D. The atomic number is the number of protons and neutrons in the nucleus, while the mass number is the total number of electrons in an atom.

Correct answer: C

Rationale: The atomic number and the mass number are two fundamental properties of an atom. They provide important information about the identity and structure of an element.

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