ATI TEAS Practice Science Test

ATI TEAS Practice Science Test Related

Review ATI TEAS Practice Science Test related questions and content

If a doctor diagnoses a patient with an impaired posterior pituitary gland, which of the following symptoms related to kidney function does the patient display?

  • A. Thirst
  • B. Tiredness
  • C. Weight gain
  • D. Concentrated urine
Correct Answer: D

Rationale: When the posterior pituitary gland is impaired, there is decreased secretion of antidiuretic hormone (ADH). ADH plays a crucial role in regulating water reabsorption by the kidneys. A deficiency of ADH leads to the inability of the kidneys to concentrate urine, resulting in the production of dilute urine. Therefore, 'Concentrated urine' is the correct symptom associated with impaired posterior pituitary gland. Choices A, B, and C are incorrect. Thirst is more commonly associated with diabetes insipidus, tiredness could be a general symptom but not specifically related to kidney function, and weight gain is not a typical symptom of impaired posterior pituitary gland affecting kidney function.

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Which part of the hair is not attached to the follicle?

  • A. Bulb
  • B. Root
  • C. Shaft
  • D. Strand
Correct Answer: C

Rationale: The correct answer is C, 'Shaft.' The hair shaft is the part of the hair that extends above the skin surface and is not attached to the follicle. The bulb and root are parts that are connected to the follicle as they are located below the skin surface and play a role in hair growth. The strand, on the other hand, refers to a single hair fiber and is not a distinct part of the hair anatomy.

Which represents the correct order of airflow in the lungs?

  • A. Bronchi, trachea, alveoli, bronchioles
  • B. Alveoli, bronchioles, bronchi, trachea
  • C. Trachea, bronchi, bronchioles, alveoli
  • D. Bronchioles, alveoli, trachea, bronchi
Correct Answer: C

Rationale: The correct order of airflow in the lungs starts with air entering through the trachea, moving into the bronchi, then proceeding to the bronchioles, and finally reaching the alveoli where gas exchange occurs. Therefore, the correct sequence is Trachea, Bronchi, Bronchioles, Alveoli, making choice C the accurate representation of the airflow in the lungs. Choices A, B, and D are incorrect because they do not follow the anatomical path of airflow in the lungs as air moves from the trachea to the bronchi, then bronchioles, and finally the alveoli for gas exchange.

What is a rod-shaped structure that forms when a single DNA molecule and its associated proteins coil tightly before cell division?

  • A. Centromere
  • B. Chromatid
  • C. Chromosome
  • D. Gene
Correct Answer: C

Rationale: A chromosome is a rod-shaped structure that forms when a single DNA molecule and its associated proteins coil tightly before cell division. It contains the genetic material and is essential for cell division and replication. The centromere is a specific region of a chromosome that plays a role in cell division. A chromatid is one half of a duplicated chromosome, and a gene is a unit of heredity responsible for specific traits. Therefore, the correct answer is 'Chromosome' as it represents the entire condensed DNA molecule during cell division.

Which of the following correctly orders the route of a fetus during childbirth?

  • A. Uterus, cervix, vagina
  • B. Cervix, uterus, vagina
  • C. Uterus, vas deferens, vagina
  • D. Ovary, fallopian tube, uterus
Correct Answer: A

Rationale: The correct route of a fetus during childbirth is from the uterus, through the cervix, and then out through the vagina. The contractions of the uterus help push the fetus through the cervix and out through the vaginal canal during childbirth. Choice B is incorrect as it reverses the order of the cervix and uterus. Choice C is incorrect as it includes the vas deferens, which is not part of the female reproductive system. Choice D is incorrect as it lists structures from the female reproductive system but in the wrong order for childbirth.

The hypodermis is primarily composed of which tissue?

  • A. Adipose
  • B. Connective
  • C. Epithelial
  • D. Muscle
Correct Answer: A

Rationale: The hypodermis, also known as the subcutaneous layer, is primarily composed of adipose (fat) tissue. Adipose tissue in the hypodermis serves as an insulator, energy reserve, and cushioning for the body.
Choice B, Connective tissue, is a broad category that includes various types of tissue like adipose, but the hypodermis is specifically rich in adipose tissue. Choice C, Epithelial tissue, is not the primary component of the hypodermis; it is mainly found covering body surfaces and lining cavities. Choice D, Muscle tissue, is not a major component of the hypodermis; muscle tissue is mainly located deeper in the body and serves in movement and support functions.

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