ATI TEAS 7
Practice Science TEAS Test
1. Which cavity contains all of the frontal cavities? Choose only ONE best answer.
- A. Dorsal
- B. Thoracic
- C. Abdominopelvic
- D. Ventral
Correct answer: D
Rationale: The correct answer is D: Ventral. The ventral cavity includes both the thoracic and abdominopelvic cavities. The frontal cavities are part of the ventral cavity, which is located towards the front of the body, while the dorsal cavity is towards the back. The dorsal cavity contains the cranial and vertebral cavities, not the frontal cavities. The thoracic cavity is part of the ventral cavity but does not encompass all the frontal cavities. The abdominopelvic cavity is also part of the ventral cavity, but it does not include all of the frontal cavities. Therefore, the ventral cavity is the correct choice as it encompasses all the frontal cavities.
2. Which of the following has a smaller genetic scale than a chromosome?
- A. Genome
- B. Gene
- C. DNA
- D. All of the above
Correct answer: B
Rationale: The correct answer is 'B: Gene.' A gene is a segment of DNA and is smaller in scale than a chromosome. Genes are the fundamental units of heredity, containing the instructions for building and maintaining an organism. While a chromosome is a larger structure that carries many genes, each gene is a specific segment of DNA responsible for encoding a particular protein or RNA molecule. Choices A, C, and D are incorrect. The 'Genome' (Choice A) refers to the complete set of an organism's genetic material, including all of its genes, while 'DNA' (Choice C) is the molecule that carries the genetic instructions. 'All of the above' (Choice D) is incorrect because not all options have a smaller genetic scale than a chromosome.
3. Which type of tissue protects the respiratory system's trachea?
- A. Bone
- B. Cartilage
- C. Collagen
- D. Keratin
Correct answer: B
Rationale: Cartilage is the correct answer as it provides flexible support and protection in the trachea. Cartilage is specifically designed to maintain the trachea's shape and prevent it from collapsing during breathing. Bone is a rigid tissue, not found in the trachea, and would not provide the necessary flexibility for breathing. Collagen is a structural protein but does not offer the same support and flexibility as cartilage in this context. Keratin is a protein that forms structures like hair and nails, and it is not present in the trachea to provide protection.
4. Which of the following statements is correct based on anatomical terms?
- A. The shoulder joint is proximal to the neck.
- B. The elbow joint is superior to the shoulder.
- C. The thoracic vertebrae are superior to the cervical vertebrae.
- D. The thumb is on the lateral aspect of the hand.
Correct answer: D
Rationale: Option D is the correct answer based on anatomical terms. The thumb is indeed located on the lateral aspect of the hand, following anatomical positioning. The terms 'proximal,' 'superior,' and 'inferior' are used in relation to the center of the body or a specific point of reference, while 'lateral' and 'medial' describe positions further away or closer to the midline of the body. Therefore, the thumb being on the lateral side of the hand is an accurate anatomical description. Choices A, B, and C are incorrect because they do not align with anatomical terminology. In anatomical terms, 'proximal' refers to a position closer to the center of the body, 'superior' indicates a position above or higher than another part, and 'inferior' signifies a position below or lower than another part. The shoulder joint is distal to the neck, the elbow is inferior to the shoulder, and the cervical vertebrae are superior to the thoracic vertebrae.
5. Which of the following correctly orders the layers of the epidermis from most superficial to deepest?
- A. S. spinosum, S. basale, S. corneum, S. granulosum, S. lucidum
- B. S. corneum, S. lucidum, S. granulosum, S. spinosum, S. basale
- C. S. corneum, S. spinosum, S. basale, S. granulosum, S. lucidum
- D. S. basale, S. spinosum, S. granulosum, S. lucidum, S. corneum
Correct answer: B
Rationale: The correct order of the layers of the epidermis from most superficial to deepest is: Stratum corneum, Stratum lucidum, Stratum granulosum, Stratum spinosum, Stratum basale. Choice B, 'S. corneum, S. lucidum, S. granulosum, S. spinosum, S. basale,' provides the accurate layering from the outermost to the innermost layer of the epidermis. Choice A is incorrect as it starts with Stratum spinosum, which is not the most superficial layer. Choice C is incorrect as it places Stratum spinosum before Stratum basale. Choice D is incorrect as it starts with Stratum basale, which is the deepest layer of the epidermis.
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