Nursing Elites

1. Which of the following is NOT an element of the respiratory system?

• A. Ribs
• B. Trachea
• C. Diaphragm
• D. Alveoli

Correct answer: A

Rationale: The correct answer is A: Ribs. The ribs are part of the skeletal system, providing structure and protection to the thoracic cavity. The trachea, diaphragm, and alveoli are all essential components of the respiratory system. The trachea carries air to and from the lungs, the diaphragm aids in breathing by contracting and relaxing to change the volume of the thoracic cavity, and the alveoli are tiny air sacs where gas exchange occurs in the lungs. Therefore, ribs do not play a direct role in the respiratory process and are not considered a part of the respiratory system.

2. Which hormone is produced by the thyroid gland to regulate metabolism?

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

Correct answer: B

Rationale: Thyroxine, also known as T4, is the hormone produced by the thyroid gland to regulate metabolism. It is essential for controlling the body's metabolic rate, heart and digestive function, muscle control, brain development, and bone maintenance. Adrenaline is produced by the adrenal glands, not the thyroid gland. Cortisol is produced by the adrenal cortex, not the thyroid gland. Insulin is produced by the pancreas, not the thyroid gland. Therefore, the correct answer is Thyroxine (B).

3. What is the bottom number in a blood pressure reading?

• A. Diastolic pressure
• B. Systolic pressure
• C. Pulse rate
• D. Mean arterial pressure

Correct answer: A

Rationale: The correct answer is A: Diastolic pressure. The bottom number in a blood pressure reading represents the diastolic pressure, which indicates the lowest pressure in the arteries when the heart is resting between beats. This value is important in understanding the overall health of the cardiovascular system. Choice B, Systolic pressure, is the top number in a blood pressure reading and represents the pressure in the arteries when the heart is contracting. Choice C, Pulse rate, refers to the number of times the heart beats in a minute. Choice D, Mean arterial pressure, is a calculated value using both systolic and diastolic pressures to provide an average pressure in the arteries during a cardiac cycle, but it is not the bottom number in a blood pressure reading.

4. Which of the following sentences best serves as the topic sentence in a paragraph about the history of yoga?

• A. The word 'yoga' was mentioned in the Vedas, a collection of texts containing songs, mantras, and rituals used by Vedic priests.
• B. By the late 1800s, yoga masters from India began to travel to the West, attracting followers.
• C. After a few hundred years, yoga masters rejected the teachings of the ancient Vedas and embraced the physical body as the means to achieve enlightenment.
• D. The practice of yoga first developed in the Indus-Sarasvati civilization in Northern India over 5,000 years ago.

Correct answer: D

Rationale: The correct answer is D because it introduces the historical origin of yoga, which is the main focus of the paragraph. This sentence sets the context by providing a foundational understanding of where and when yoga originated. Choice A talks about the mention of yoga in the Vedas but does not provide information about the historical development of yoga itself. Choice B discusses the travel of yoga masters to the West, which is a later development in the history of yoga and not the starting point. Choice C refers to a shift in yoga philosophy without directly addressing its origins, making it less suitable as a topic sentence compared to choice D.

5. Which definition most closely relates to the usage of the word 'moult' in the passage?

• A. An adventure of sorts, especially underwater
• B. Mating act between two insects
• C. The act of shedding part or all of the outer shell
• D. Death of an organism that ends in a revival of life

Correct answer: C

Rationale: 'Moult' refers to the act of shedding the outer shell, which is part of the insect's development. In the passage, it mentions insects that remain continually under water until they are ready to undergo their final moult and attain the winged state. This process of shedding the outer shell is crucial for insects transitioning from their aquatic larval stage to their aerial adult stage. Choices A, B, and D do not align with the specific context provided in the passage about the term 'moult.'

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