HESI A2
HESI A2 Anatomy and Physiology Practice Test 2023
1. What is the primary function of the pancreas in digestion?
- A. To absorb nutrients
- B. To secrete digestive enzymes
- C. To produce bile
- D. To store glucose
Correct answer: B
Rationale: The correct answer is B: To secrete digestive enzymes. The pancreas plays a crucial role in digestion by secreting digestive enzymes that break down carbohydrates, fats, and proteins in the small intestine. These enzymes help in the process of breaking down food particles into smaller molecules that can be easily absorbed by the body for nutrients. Choices A, C, and D are incorrect as the primary function of the pancreas is not to absorb nutrients, produce bile, or store glucose in digestion.
2. 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.
3. Which lobe of the brain controls speech production?
- A. Frontal lobe
- B. Parietal lobe
- C. Temporal lobe
- D. Occipital lobe
Correct answer: A
Rationale: The frontal lobe of the brain, specifically the left hemisphere in an area known as Broca's area, is responsible for controlling speech production. This region plays a vital role in speech formation and language expression. Damage to the frontal lobe, particularly Broca's area, can lead to language difficulties like expressive aphasia, a condition characterized by trouble speaking fluently. The parietal lobe is more involved in processing sensory information and spatial awareness. The temporal lobe is associated with memory, hearing, and language comprehension. The occipital lobe is primarily responsible for processing visual information.
4. A caterpillar starts moving at a rate of 14 in/hr. After 15 minutes, it is moving at a rate of 20 in/hr. What is the caterpillar’s rate of acceleration?
- A. 6 in/hr²
- B. 12 in/hr²
- C. 24 in/hr²
- D. 280 in/hr²
Correct answer: C
Rationale: Acceleration is the change in velocity over time. The change in velocity for the caterpillar is 20 in/hr - 14 in/hr = 6 in/hr. Since this change occurred over 15 minutes (or 0.25 hours), the acceleration can be calculated as (6 in/hr) / (0.25 hr) = 24 in/hr². Therefore, the caterpillar's rate of acceleration is 24 in/hr², which corresponds to choice C. Choice A, 6 in/hr², is incorrect as it does not account for the time factor and the correct calculation. Choice B, 12 in/hr², is incorrect as it doubles the correct acceleration value. Choice D, 280 in/hr², is significantly higher than the correct value, indicating a calculation error.
5. Which word is used incorrectly in the following sentence? Which criteria were used to draw a conclusion about their findings?
- A. Which
- B. was
- C. draw
- D. their
Correct answer: C
Rationale: The word 'draw' is used incorrectly in the sentence. The correct word that needs to be used is 'criteria' instead of 'criterion' to maintain subject-verb agreement. The correct sentence should be: 'Which criteria were used to draw a conclusion about their findings?' 'Draw' should be 'were drawn' to match the plural subject 'criteria.' The other choices are correct in the sentence and do not contain any errors.
Similar Questions
Access More Features
HESI A2 Basic
$49/ 30 days
- 3,000 Questions with answers
- 30 days access
HESI A2 Premium
$99/ 90 days
- Actual HESI A2 Questions
- 3,000 questions with answers
- 90 days access