what might an injury to the parietal lobe affect
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HESI A2

HESI A2 Anatomy and Physiology Practice Test

1. How might an injury to the parietal lobe impact an individual?

Correct answer: D

Rationale: An injury to the parietal lobe can impact an individual's perception, affecting their ability to interpret sensory information such as touch, spatial orientation, and recognizing objects. The parietal lobe is crucial for integrating sensory information and creating a coherent perception of the surrounding world. Damage to this area can lead to challenges with spatial awareness, object recognition, and accurate processing of sensory input. Choices A, B, and C are incorrect because breathing, attention, and memory are primarily associated with other brain regions such as the brainstem, frontal lobe, and temporal lobe respectively, not the parietal lobe.

2. The motor cortex helps the brain by monitoring and controlling the body's movement. Where is the motor cortex located within the brain?

Correct answer: C

Rationale: The correct answer is C: Front portion of the parietal lobe. The motor cortex is located in the frontal lobe, specifically in the front portion of the parietal lobe. It is responsible for planning, controlling, and executing voluntary movements. Choices A, B, and D are incorrect as the motor cortex is not located at the back of the head, top middle portion of the parietal lobe, or around the auditory cortex.

3. To which two systems does the urethra belong?

Correct answer: B

Rationale: The urethra belongs to both the urinary and reproductive systems. In the urinary system, it functions as a passage for urine from the bladder to exit the body. In the reproductive system, it serves as a conduit for the expulsion of semen during ejaculation. Choice A is incorrect because the urethra is not part of the endocrine system. Choice C is also incorrect because the urethra is not primarily associated with the endocrine system. Choice D is incorrect as the urethra is not part of the digestive or cardiovascular systems.

4. Which cellular structure is responsible for producing energy?

Correct answer: B

Rationale: Mitochondria are the organelles responsible for producing energy in the cell through a process called cellular respiration. They are often referred to as the powerhouses of the cell due to their role in generating ATP, the cell's energy currency. The nucleus is not involved in energy production but houses the cell's genetic material. Ribosomes are responsible for protein synthesis, not energy production. The Golgi apparatus is involved in processing and packaging proteins for secretion, not energy production.

5. Which organ system is primarily responsible for preventing water loss?

Correct answer: B

Rationale: The correct answer is B: The integumentary system. The integumentary system, which includes the skin, is primarily responsible for preventing water loss from the body. The skin acts as a barrier that helps regulate moisture and prevent excessive water loss through a process known as transepidermal water loss. The nervous system (choice A) is responsible for transmitting signals throughout the body, the lymphatic system (choice C) is responsible for the immune response and fluid balance, and the urinary system (choice D) is responsible for filtering blood and producing urine, but they do not primarily prevent water loss like the integumentary system.

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