ATI TEAS 7
ATI TEAS Science Test
1. Which of the following functions is NOT performed by the integumentary system, the skin?
- A. Protect internal tissues from injury
- B. Waterproof the body
- C. Help regulate body temperature
- D. Return fluid to the blood vessels
Correct answer: D
Rationale: The integumentary system, which includes the skin, performs various functions like protecting internal tissues from injury, waterproofing the body, and helping regulate body temperature. The function of returning fluid to the blood vessels is primarily associated with the lymphatic system, not the integumentary system. The skin contributes to fluid balance by regulating sweating and preventing excessive water loss, but it does not directly return fluid to the blood vessels, making this the correct answer. Choices A, B, and C are functions directly related to the integumentary system and are essential for maintaining the body's overall health and well-being.
2. Which lifestyle practice can weaken the immune system?
- A. Getting enough sleep
- B. Eating a balanced diet rich in fruits and vegetables
- C. Managing stress levels
- D. Frequent smoking
Correct answer: D
Rationale: Frequent smoking can weaken the immune system by damaging immune cells and impairing their function. Smoking increases the risk of respiratory infections and other illnesses, negatively impacting immune health. Therefore, frequent smoking is a lifestyle practice that can weaken the immune system. Choices A, B, and C are all beneficial practices that support a healthy immune system. Getting enough sleep, eating a balanced diet rich in fruits and vegetables, and managing stress levels are important for maintaining optimal immune function and overall well-being.
3. Which of the following hormones helps regulate blood pressure by affecting kidney function?
- A. Insulin
- B. Testosterone
- C. Renin
- D. Estrogen
Correct answer: C
Rationale: Renin is the hormone that helps regulate blood pressure by affecting kidney function. It is released by the kidneys in response to low blood pressure or low blood volume. Renin plays a crucial role in the renin-angiotensin-aldosterone system, which is responsible for regulating blood pressure and fluid balance in the body. Insulin, testosterone, and estrogen do not directly impact blood pressure regulation through kidney function. Insulin is involved in regulating glucose metabolism, testosterone is a male sex hormone, and estrogen is a female sex hormone. Therefore, the correct answer is Renin (Choice C) because of its specific role in blood pressure regulation through kidney function.
4. What is the muscular sac in the female body that nourishes and protects a developing fetus?
- A. Ovary
- B. Fallopian tube
- C. Uterus
- D. Vagina
Correct answer: C
Rationale: The correct answer is the uterus. The uterus is a muscular organ in the female body where a fertilized egg implants and grows into a fetus during pregnancy. It provides nourishment and protection to the developing fetus. The ovaries produce eggs, the fallopian tubes transport eggs from the ovaries to the uterus, and the vagina is the muscular tube that connects the uterus to the outside of the body for childbirth. Therefore, the roles of the ovary, fallopian tube, and vagina are not related to nourishing and protecting a developing fetus, making them incorrect choices.
5. What is the function of the rib cage in the human body?
- A. To protect the digestive organs
- B. To protect the lungs and heart
- C. To support movement
- D. To regulate body temperature
Correct answer: B
Rationale: The rib cage plays a crucial role in protecting vital organs, specifically the lungs and heart, from external injuries. Choice A is incorrect because the rib cage does not primarily protect the digestive organs. Choice C is incorrect as the primary function of the rib cage is not to support movement, but to protect internal organs. Choice D is incorrect as regulating body temperature is not a function typically associated with the rib cage.
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