ATI TEAS 7
ATI TEAS Science Test
1. When a certain plant is introduced into an area, and the population of a certain insect species declines, what can be concluded from this?
- A. The plant is toxic to the insect in question.
- B. The plant competes with and drives out plants that the insect feeds on.
- C. The insect population was declining anyway; the fact that it happened when the plant was introduced is a coincidence.
- D. All of these explanations may be possible; further investigation is necessary to determine which is true.
Correct answer: D
Rationale: The given scenario presents multiple possible explanations for the decline in the insect population with the introduction of a particular plant. It could be due to the plant being toxic to the insect (Option A), competing with and driving out plants that the insect feeds on (Option B), or the decline could be coincidental with the plant introduction as the insect population was already decreasing (Option C). Without further investigation and evidence, it is not possible to definitively determine which explanation is correct. Therefore, all of these possibilities may be true, and thorough investigation is necessary to reach a conclusive conclusion.
2. Which organ system is most responsible for maintaining control of body temperature?
- A. The skeletal system.
- B. The circulatory system.
- C. The immune system.
- D. The muscular system.
Correct answer: B
Rationale: The circulatory system is the correct answer as it plays a crucial role in maintaining control of body temperature through a process called thermoregulation. Blood vessels near the skin surface dilate to dissipate heat when the body is too warm and constrict to reduce heat loss when it's too cold. Additionally, the circulatory system helps distribute heat produced from metabolic processes throughout the body to keep a stable internal temperature. The skeletal system provides structural support, the immune system defends against pathogens, and the muscular system is responsible for movement, but they are not primarily involved in regulating body temperature.
3. Which of the following correctly lists the normal blood flow through the heart?
- A. Left ventricle, left atrium, body, right ventricle, right atrium, lungs
- B. Left atrium, left ventricle, lungs, right atrium, right ventricle, body
- C. Right atrium, right ventricle, lungs, left atrium, left ventricle, body
- D. Right ventricle, right atrium, body, left atrium, left ventricle, lungs
Correct answer: B
Rationale: The correct order of normal blood flow through the heart is as follows: from the body, blood flows into the right atrium, then to the right ventricle, followed by the lungs through the pulmonary artery for oxygenation. Oxygenated blood then returns to the heart through the pulmonary veins into the left atrium, then moves into the left ventricle before being pumped out to the body. Choice B correctly depicts this sequential flow of blood through the heart. Choices A, C, and D are incorrect as they do not follow the typical path of blood flow through the heart.
4. Which of the following is NOT a function of the lymphatic system?
- A. Removing substances from the blood.
- B. Releasing hormones.
- C. Combating disease.
- D. Maintaining tissue fluid balance.
Correct answer: B
Rationale: The correct answer is B. Releasing hormones is not a function of the lymphatic system. The lymphatic system plays crucial roles in removing substances from the blood, combating disease through the production of immune cells, and maintaining tissue fluid balance by circulating lymph. Releasing hormones is primarily the function of endocrine glands, not the lymphatic system.
5. When a patient is lying flat on their back, which of the following positions are they in?
- A. Prone.
- B. Supine.
- C. Lateral.
- D. Medial.
Correct answer: B
Rationale: When a patient is lying flat on their back, they are in the supine position. In the supine position, the person's face is facing upward, and their back is touching the surface they are lying on. This position is commonly used for medical examinations and procedures. Choice A, 'Prone,' refers to lying face down, not on the back. Choice C, 'Lateral,' indicates lying on the side. Choice D, 'Medial,' pertains to the middle or center, not a position in relation to lying on the back.
Similar Questions
Access More Features
ATI TEAS Premium Plus
$149.99/ 90 days
- Actual ATI TEAS 7 Questions
- 3,000 questions with answers
- 90 days access
ATI TEAS Basic
$49/ 30 days
- 3,000 Questions with answers
- 30 days access