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Nursing Elites

ATI TEAS 7

anatomy

1. Which muscle plays a significant role in the process of forced exhalation by contracting to reduce the thoracic cavity volume?

Correct answer: C

Rationale: The correct answer is C: Internal intercostal muscles. During forced exhalation, these muscles contract to depress the ribs and decrease the thoracic cavity volume, assisting in pushing air out of the lungs. The diaphragm is primarily responsible for inhalation by contracting to increase thoracic cavity volume. External intercostal muscles aid in inhalation by elevating the ribs. Abdominal muscles are involved in activities like coughing, sneezing, and forced exhalation by compressing the abdominal contents to further reduce thoracic volume. Therefore, the internal intercostal muscles have a significant role in forced exhalation.

2. What is the difference between the atomic number and the mass number of 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.

3. Which type of energy is possessed by an object in motion?

Correct answer: b

Rationale: Kinetic energy is the energy possessed by an object in motion.

4. Which vitamin requires the lymphatic system for proper absorption from the intestine?

Correct answer: D

Rationale: The correct answer is D, Vitamin B12. Vitamin B12 requires the presence of intrinsic factor, a protein produced by the stomach, for absorption in the small intestine. This complex is then absorbed in the ileum with the help of the intrinsic factor. The absorption of Vitamin B12 is a unique process that relies on the function of the lymphatic system to transport it throughout the body. Vitamins A, C, and D are absorbed through other mechanisms and do not require the lymphatic system for proper absorption.

5. A car is traveling on a curved road. What force keeps the car moving along the curved path?

Correct answer: D

Rationale: In this case, static friction acts between the tires and the road, providing the centripetal force required to keep the car moving in a circle even though it's traveling in a straight line relative to the ground.

6. What tool helps scientists identify and classify organisms based on their shared characteristics?

Correct answer: C

Rationale: Rationale: A) Binomial nomenclature is a system used to give each organism a two-part scientific name (genus and species) but does not help in identifying or classifying organisms based on shared characteristics. B) Cladistics is a method of classification based on evolutionary relationships and shared characteristics, but it is not a tool used for identifying organisms. C) Dichotomous key is a tool that helps scientists identify and classify organisms based on their shared characteristics by presenting a series of choices leading the user to the correct identification. D) Domain-based classification is a system of classification that groups organisms into three domains (Bacteria, Archaea, Eukarya) based on molecular and genetic similarities, but it is not a tool used for identifying organisms based on shared characteristics.

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