ATI TEAS 7
Anatomy
1. The stratified squamous epithelium found in the skin is adapted for:
- A. Absorption
- B. Secretion
- C. Protection
- D. Gas exchange
Correct answer: C
Rationale: The correct answer is C: Protection. Stratified squamous epithelium is a type of tissue that is well-suited for protection as it consists of multiple layers of cells that provide a barrier against physical and chemical damage. In the skin, this epithelium helps protect the body against external threats such as pathogens, UV radiation, and mechanical abrasion. Absorption (A) and secretion (B) are typically functions of other types of epithelial tissues, such as simple columnar or simple cuboidal epithelium. Gas exchange (D) is primarily facilitated by tissues like the alveolar epithelium in the lungs, not stratified squamous epithelium in the skin.
2. What is the significance of cell division?
- A. Growth and repair of tissues
- B. Sexual reproduction
- C. Genetic diversity
- D. All of the above
Correct answer: D
Rationale: Cell division is a fundamental process that is essential for the growth, repair, and reproduction of all living organisms. It plays a crucial role in ensuring that organisms maintain their proper size and shape, and it allows for the replacement of damaged or worn-out cells. Cell division is also essential for sexual reproduction, as it is the process by which haploid gametes (sex cells) are produced. These gametes fuse during fertilization to form a diploid zygote, which ultimately gives rise to a new organism.
3. What is the term for a genetic disorder caused by a mutation on the X chromosome?
- A. Autosomal dominant disorder
- B. Autosomal recessive disorder
- C. Sex-linked recessive disorder
- D. Sex-linked dominant disorder
Correct answer: C
Rationale: Rationale: - Autosomal dominant disorders (Option A) are caused by a mutation in one copy of a gene on one of the non-sex chromosomes (autosomes). These disorders do not specifically involve the X chromosome. - Autosomal recessive disorders (Option B) are caused by mutations in both copies of a gene on the autosomes. They are not directly related to mutations on the X chromosome. - Sex-linked dominant disorders (Option D) are rare and typically result in more severe symptoms in males because they only need one copy of the mutated gene on the X chromosome to express the disorder. This is not the term for a genetic disorder caused by a mutation on the X chromosome. - Sex-linked recessive disorders (Option C) are genetic disorders caused by mutations on the X chromosome. These disorders are more commonly seen in males because they have only one X chromosome, making them more susceptible to X-linked mutations. Females have two
4. An IV drip delivers medication at a rate of 40 drops per minute. Each drop contains 0.05 milliliters of the medication. How many milliliters of medication are delivered in one hour?
- A. 12 milliliters
- B. 24 milliliters
- C. 60 milliliters
- D. 120 milliliters
Correct answer: B
Rationale: First convert minutes to hours (1 hour * 60 minutes). Then, multiply the number of drops per minute (40 drops/minute) by the volume per drop (0.05 ml/drop) and by the conversion factor (60 minutes/hour) to find the total volume delivered: 40 drops/minute * 0.05 ml/drop * 60 minutes/hour = 24 milliliters.
5. In technical writing, it's crucial to:
- A. Use informal language to connect with the audience.
- B. Emphasize your expertise with complex jargon.
- C. Explain concepts clearly and concisely for diverse readers.
- D. Prioritize creativity and artistic flair in your writing style.
Correct answer: C
Rationale: Technical writing aims to convey information accurately and understandably to various audiences, requiring clear and concise language.
6. Which type of brain wave activity is often seen during REM sleep, associated with dreaming?
- A. Delta waves
- B. Alpha waves
- C. Beta waves
- D. Theta waves
Correct answer: D
Rationale: During REM (rapid eye movement) sleep, the brain is highly active, and theta waves are the dominant brain wave pattern. Theta waves are associated with deep relaxation, creativity, and dreaming. Delta waves are typically seen in deep sleep stages, not during REM sleep. Alpha waves are present when we are awake but relaxed, while beta waves are associated with active thinking and concentration. Therefore, theta waves are the correct answer for brain wave activity during REM sleep.
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