if an impulse is traveling from a sense receptor toward the spinal cord it is traveling along what type of neuron

HESI A2

HESI A2 Anatomy and Physiology Practice Test

1. If an impulse is traveling from a sense receptor toward the spinal cord, it is traveling along what type of neuron?

A. Motor neuron
B. Sensory neuron
C. Interneuron
D. Bipolar neuron

Correct answer: B

Rationale: The correct answer is B: Sensory neuron. A sensory neuron is responsible for carrying impulses from sensory receptors to the spinal cord. These neurons transmit information about external stimuli from the periphery to the central nervous system for processing and response. Choice A, Motor neuron, is incorrect as motor neurons carry signals from the central nervous system to muscles and glands, enabling movement and secretion. Choice C, Interneuron, is incorrect as interneurons act as connectors between sensory and motor neurons, primarily facilitating communication between the two. Choice D, Bipolar neuron, is incorrect as bipolar neurons are specialized sensory neurons found in some sensory organs like the retina of the eye and the olfactory epithelium.

2. Which word is used incorrectly? 'I did the work before he asked me to.'

A. did
B. work
C. asked
D. before

Correct answer: A

Rationale: The word 'did' is correctly used in the sentence to form the past tense of the verb 'do.' In this context, 'did' is the appropriate term. The other words in the sentence, 'work,' 'asked,' and 'before,' are all used correctly and do not represent an incorrect word choice. Therefore, 'did' is the only word that is not used incorrectly in the given sentence.

3. Calculate: (88)(7.08) =

A. 862.5
B. 88.040
C. 64.252
D. 623.04

Correct answer: D

Rationale: To find the product of 88 and 7.08, simply multiply the two numbers: 88 x 7.08 = 623.04. Therefore, the correct answer is D. Choices A, B, and C are incorrect because they do not result from the correct multiplication of 88 and 7.08.

4. What cycle is the sequence of reactions by which most living cells generate energy during aerobic respiration?

A. Calvin Cycle
B. Krebs Cycle
C. Photosynthesis
D. Fermentation

Correct answer: B

Rationale: The Krebs Cycle is the correct answer. It is a series of reactions occurring in the mitochondria and is a crucial part of aerobic respiration. The Calvin Cycle is a part of photosynthesis, not respiration, making choice A incorrect. Photosynthesis (choice C) is the process by which plants, algae, and some bacteria convert light energy into chemical energy. Fermentation (choice D) is an anaerobic process that does not require oxygen and is not the primary energy-generating pathway during aerobic respiration, so it is incorrect.

5. If a treatment mitigates symptoms, the symptoms become ______.

A. Worse
B. Less severe
C. Unchanged
D. Unbearable

Correct answer: B

Rationale: The correct answer is B: 'Less severe.' When a treatment mitigates symptoms, it means that it reduces the severity or impact of those symptoms. Therefore, the symptoms would become less severe after the treatment. Choices A, C, and D are incorrect because mitigating symptoms does not make them worse, unchanged, or unbearable; instead, it helps alleviate or reduce their intensity.