[Mar-2026] Dumps Practice Exam Questions Study Guide for the NEX Exam
NEX Dumps with Practice Exam Questions Answers
NEW QUESTION # 35
Veins throughout the body contain structures, indicated by arrows, in the image below.
The structures shown in the image prevent which of the following from occurring?
- A. Blood leaking into the interstitial spaces
- B. Backflow of blood
- C. Forward flow of blood
- D. Obstruction of blood flow
Answer: B
Explanation:
Veins contain one-way valves that prevent blood from flowing backward as it returns to the heart. These valves are especially important in veins of the arms and legs, where blood must move against gravity. When muscles contract, they push blood forward toward the heart, and the valves close behind it to prevent backflow. Without these valves, blood could pool in the veins, leading to conditions such as varicose veins.
The valves do not obstruct blood flow under normal conditions, nor do they prevent blood from leaking into surrounding tissues-that function is related to capillary walls. The NEX Science exam often emphasizes understanding how anatomical structures support physiological function, making venous valves a key cardiovascular concept.
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NEW QUESTION # 36
Word Knowledge
The word"implement"most nearly means:
- A. Carry out
- B. Ignore
- C. Avoid
- D. Delay
Answer: A
Explanation:
To implement means to put a plan or decision into action. Option B is the correct synonym. This word is frequently used in healthcare policies and procedures.
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NEW QUESTION # 37
Which of the following bones form the ball-and-socket joint of the upper extremity?
- A. Humerus, clavicle
- B. Scapula, clavicle
- C. Scapula, humerus
- D. Ribs, humerus
Answer: C
Explanation:
The ball-and-socket joint of the upper extremity is the shoulder joint. This joint is formed by the head of the humerus (the ball) fitting into the glenoid cavity of the scapula (the socket). This structure allows for a wide range of motion, including flexion, extension, abduction, adduction, and rotation. The ribs do not participate in this joint, and the clavicle connects the scapula to the sternum but does not form the ball-and-socket articulation. Understanding joint structure and function is important for anatomy questions on the NEX Science exam. The shoulder joint's design allows greater mobility than stability, which explains why shoulder dislocations are relatively common.
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NEW QUESTION # 38
Word Knowledge
The word"observe"most nearly means:
- A. Watch carefully
- B. Disregard
- C. Question
- D. Interrupt
Answer: A
Explanation:
To observe means to watch carefully or notice attentively. Option A best matches this definition. In healthcare contexts, observation is a critical skill, making this a high-yield NEX vocabulary term.
NEW QUESTION # 39
In the human male, which of these structures produces sperm cells?
- A. Cowper's glands
- B. Testes
- C. Epididymis
- D. Prostate gland
Answer: B
Explanation:
Sperm cells are produced in thetestes, specifically within tightly coiled structures called seminiferous tubules.
The process of sperm production is known as spermatogenesis and requires hormones such as testosterone.
Cowper's glands and the prostate gland do not produce sperm; instead, they secrete fluids that contribute to semen and help protect and nourish sperm cells. The epididymis is responsible for sperm maturation and storage but does not produce sperm. The NEX Science exam often tests reproductive anatomy by asking students to distinguish between sperm production, maturation, and transport. Understanding the specific role of each male reproductive structure is essential. Since only the testes are responsible for the formation of sperm cells, option C is the correct answer.
NEW QUESTION # 40
Reading Comprehension
Passage:
Antibiotics are effective against bacterial infections but do not work against viruses. Misuse of antibiotics can contribute to antibiotic resistance, making infections harder to treat.
What is the primary purpose of the passage?
- A. To promote antibiotic use for all illnesses
- B. To inform about proper antibiotic use
- C. To describe immune system disorders
- D. To explain how viruses reproduce
Answer: B
Explanation:
The passage explains what antibiotics treat, what they do not treat, and the consequences of misuse. Its purpose is informational, focusing on responsible use to prevent resistance. Option C best captures this purpose. The other options either misrepresent or ignore the main focus. Purpose questions on the NEX often test whether the reader understandswhythe passage was written.
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NEW QUESTION # 41
Review the table of undisturbed sedimentary rock strata below.
According to the table, which of these fossils is the oldest?
- A. Fossil D
- B. Fossil B
- C. Fossil C
- D. Fossil A
Answer: D
Explanation:
This question tests understanding of the law of superposition, a fundamental principle in geology that is frequently tested on the NEX Science exam. The law of superposition states that in undisturbed sedimentary rock layers, the oldest layers are found at the bottom, while the youngest layers are found at the top. In the table shown, the soil surface is at the top, followed by Fossil D, Fossil C, Fossil B, and Fossil A at the bottom.
Because Fossil A is located in the lowest rock layer, it must be the oldest fossil. Fossils found in higher layers were deposited more recently. The key word in the question is "undisturbed," which means the layers have not been mixed or overturned by geological processes. The NEX exam often emphasizes recognizing this clue to correctly apply the law of superposition. Therefore, Fossil A is the correct answer because it represents the earliest life form preserved in the rock strata.
NEW QUESTION # 42
Word Knowledge
The word"abundant"most nearly means:
- A. Plentiful
- B. Limited
- C. Scarce
- D. Fragile
Answer: A
Explanation:
"Abundant" means existing in large quantities or more than enough. Option B, "plentiful," is the closest synonym. Scarce and limited are opposites, and fragile refers to being easily broken. NEX word knowledge questions focus on synonyms used in common academic and healthcare contexts.
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NEW QUESTION # 43
Which action is an example of inequity in healthcare?
- A. Filtering water for one segment of the community, but not another
- B. Distributing free school lunches to all students
- C. Administering medication to all patients who report pain
- D. Providing flexible or extended healthcare appointment times
Answer: A
Explanation:
Healthcare inequity occurs when certain groups receive fewer resources or lower-quality care than others.
Filtering water for only one segment of a community creates unequal access to a basic health necessity, increasing health risks for those excluded. The other options promote fairness and equal access to care. The NEX Science exam often evaluates understanding of social determinants of health and ethical principles, making option C the clearest example of inequity.
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NEW QUESTION # 44
Reading Comprehension
Passage:
Vaccination programs rely on widespread participation to be effective. When a large portion of the population is vaccinated, herd immunity helps protect individuals who cannot be vaccinated.
What is the primary benefit of herd immunity?
- A. It eliminates all diseases
- B. It protects unvaccinated individuals
- C. It replaces personal hygiene
- D. It reduces vaccine side effects
Answer: B
Explanation:
The passage explains that herd immunity occurs when a large percentage of the population is vaccinated, which helps protect those who cannot receive vaccines. Option B correctly states this benefit. The passage does not suggest that herd immunity eliminates all diseases or replaces hygiene practices. It also does not mention reducing side effects. On the NEX exam, cause-and-effect questions require identifying the specific outcome discussed rather than making broad assumptions. Herd immunity's protective effect on vulnerable individuals is the key idea.
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NEW QUESTION # 45
Reading Comprehension
Passage:
Healthcare professionals must communicate clearly with patients to ensure understanding of diagnoses and treatment plans. Miscommunication can lead to medication errors, missed appointments, and poor health outcomes.
Which statement best expresses the main idea of the passage?
- A. Appointments are often missed due to poor planning
- B. Communication in healthcare affects patient outcomes
- C. Patients are responsible for understanding medical information
- D. Medication errors are unavoidable
Answer: B
Explanation:
The passage emphasizes the importance of clear communication between healthcare professionals and patients. It explains that when communication is poor, negative consequences such as medication errors and missed appointments can occur, ultimately affecting health outcomes. These supporting details all point to one central idea: effective communication in healthcare is essential for positive patient outcomes. Option B accurately summarizes this main idea. Option A shifts responsibility entirely to patients, which is not stated.
Option C focuses on one consequence rather than the overall message. Option D is incorrect because the passage implies errors can be prevented with better communication. On the NEX exam, main-idea questions require identifying the broad message supported by multiple details rather than focusing on a single example.
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NEW QUESTION # 46
A rectangle's length and width are 4 centimeters (cm) and 6 cm. What is
1
2
2
1
the area of this rectangle?
(Given Area = length × width.)
- A. 12 cm²
- B. 10 cm²
- C. 20 cm²
- D. 24 cm²
Answer: A
Explanation:
This problem tests area formulas and fraction application. First calculate the full area of the rectangle using the given formula: Area = length × width. Multiply 4 cm by 6 cm to get 24 cm². The question asks for one- half of the area, not the total area. Divide 24 by 2: 24 ÷ 2 = 12 cm². Therefore, option B is correct. Option C is the full area, not half. Option A results from subtracting instead of dividing. Option D represents an incorrect partial calculation. NEX geometry questions often require careful reading to determine whether the question asks for total area or a fraction of it.
NEW QUESTION # 47
Word Knowledge
The word"adequate"most nearly means:
- A. Enough
- B. Insufficient
- C. Rare
- D. Excessive
Answer: A
Explanation:
Adequate means enough to meet a need or requirement. Option C correctly matches the meaning. This word is commonly used in healthcare contexts such as adequate nutrition or adequate hydration.
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NEW QUESTION # 48
Word Knowledge
The word"reluctant"most nearly means:
- A. Prepared
- B. Hesitant
- C. Willing
- D. Eager
Answer: B
Explanation:
"Reluctant" describes someone who is unwilling or hesitant to act. Option C best matches this meaning. The other options suggest eagerness or readiness, which are opposites. Context clues on the NEX often rely on emotional tone.
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NEW QUESTION # 49
Reading Comprehension
Passage:
Stress can affect both physical and mental health. Short-term stress may improve alertness, but chronic stress can weaken the immune system, increase blood pressure, and contribute to anxiety and depression.
Which effect of long-term stress is mentioned in the passage?
- A. Increased blood pressure
- B. Stronger immune response
- C. Improved concentration
- D. Faster healing
Answer: A
Explanation:
The passage distinguishes between short-term and chronic stress. While short-term stress may increase alertness, chronic stress is associated with negative health effects. One of the effects specifically mentioned is increased blood pressure. Option C is therefore correct. Options A and D describe benefits not associated with chronic stress in the passage. Option B is incorrect because the passage states that chronic stress weakens, rather than strengthens, the immune system. The NEX exam often includes questions that test the ability to identify contrasting ideas within a passage, such as short-term versus long-term effects.
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NEW QUESTION # 50
A car travels 15.6 miles on
3
4
4
3
of a gallon of gas. How many miles can the car travel on 5 gallons of gas?
- A. 78 miles
- B. 104 miles
- C. 58.5 miles
- D. 20.8 miles
Answer: B
Explanation:
This is a rate and proportion problem. First, determine how many miles the car travels per gallon. Since the car travels 15.6 miles on
3
4
4
3
of a gallon, divide: 15.6 ÷ 0.75 = 20.8 miles per gallon. Next, multiply this rate by the total number of gallons:
20.8 × 5 = 104 miles. Therefore, option C is correct. Option A represents miles per gallon, not total distance.
Option B is a partial multiplication error. Option D results from multiplying before finding the correct rate.
NEX questions frequently assess whether students can correctly identify unit rates before scaling up.
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NEW QUESTION # 51
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