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| Section | Objectives |
|---|---|
| Topic 1: Science | - Biology
|
| Topic 2: Verbal Skills | - Reading Comprehension
|
| Topic 3: Mathematics | - Basic Arithmetic
|
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DumpsTests is a trusted and reliable platform that has been helping Nursing Entrance Exam (Math, Science and Verbal) (NEX) exam candidates for many years. Over this long time period countless NLN NEX exam questions candidates have passed their dream NEX Certification Exam. They all got help from DumpsTests NLN Exam Questions and easily passed their challenging NEX pdf exam.
NEW QUESTION # 41
Which neuron carries the impulse from a receptor to the central nervous system?
Answer: C
Explanation:
Sensory neurons, also known as afferent neurons, carry impulses from sensory receptors to the central nervous system (brain and spinal cord). These neurons transmit information such as touch, temperature, pain, and pressure. Motor (efferent) neurons carry impulses away from the CNS to muscles or glands. Association neurons, also called interneurons, connect sensory and motor neurons within the CNS. The NEX Science exam frequently tests neural pathways and directional flow of nerve impulses, making sensory neurons the correct answer for signals traveling from receptors to the CNS.
NEW QUESTION # 42
Which structure works to prevent reflux of gastric contents by contracting and relaxing?
Answer: D
Explanation:
The lower esophageal sphincter (LES) is a ring of smooth muscle located at the junction between the esophagus and the stomach. Its primary function is to prevent gastric contents, including acid, from flowing back into the esophagus. The LES contracts to keep the stomach contents contained and relaxes to allow food to enter the stomach during swallowing. Dysfunction of the LES can lead to gastroesophageal reflux disease (GERD). The esophageal muscularis helps move food, the upper esophageal sphincter controls entry into the esophagus, and the angle of His is an anatomical feature rather than a muscular valve. The NEX Science exam frequently tests digestive system physiology and reflux prevention mechanisms.
NEW QUESTION # 43
According to the Centers for Disease Control and Prevention (CDC), approximately 7% of children and adolescents ages 6 to 19 in the United States have a high total cholesterol. If 120,000 children and adolescents in that age range were sampled, approximately how many of them would have a normal total cholesterol?
Answer: D
Explanation:
This is a percentage complement problem. If 7% of children have high cholesterol, then the remaining percentage with normal cholesterol is 100% # 7% = 93%. Convert 93% to a decimal by moving the decimal point two places to the left: 0.93. Multiply this decimal by the total number of children sampled: 0.93 ×
120,000 = 111,600. Therefore, approximately 111,600 children would have normal cholesterol levels, making option D correct. Option A incorrectly calculates 7% instead of the complement. Option C represents 70%, not 93%. Option B is close but incorrect due to rounding. NEX math questions often assess whether students understand that "normal" refers to the remainder after subtracting the affected group.
NEW QUESTION # 44
When you increase the angle between your radius and humerus, the action is known as
Answer: C
Explanation:
Extension is the movement that increases the angle between two bones at a joint. When the arm straightens at the elbow, the angle between the radius and the humerus increases, which is extension. Flexion decreases the angle between bones, circumduction is a circular movement, and retraction refers to pulling a structure backward. Understanding anatomical movement terms is essential for the NEX Science exam, especially in questions related to joints and motion.
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NEW QUESTION # 45
A doctor lowered a patient's dosage from 50 mg to 40 mg. What percent decrease was this?
Answer: D
Explanation:
This question tests percent decrease, a common NEX topic. First find the amount of decrease: 50 mg # 40 mg
= 10 mg. Next divide the decrease by the original amount:
10 ÷ 50 = 0.2.
Convert the decimal to a percent by multiplying by 100:
0.2 × 100 = 20%.
Therefore, the correct answer is B. Option D represents the numerical decrease without considering the original value. Option A and C result from incorrect division. On the NEX exam, percent change problems always use the original value as the denominator.
NEW QUESTION # 46
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