For the surface of an animal to function in the integumentary exchange of gases it must

Correct Answer: D

Rationale: The correct answer is D because for the integumentary exchange of gases to occur efficiently, the surface of the animal must meet all three criteria: be thin and soft to allow gases to pass through easily, have a high number of blood vessels to facilitate gas exchange, and have a mucus or moist covering to prevent desiccation and aid in gas diffusion. If the surface is not thin and soft, gases cannot diffuse effectively. Without a high number of blood vessels, there wouldn't be sufficient transport of gases to and from the surface. And without a mucus or moist covering, the surface may dry out, hindering gas exchange. Therefore, all of the above factors are essential for the integumentary exchange of gases to function optimally.

Correct Answer: B

Rationale: The correct answer is B: Breathing. Pneumatic and inhibitory centers are associated with controlling the process of breathing. The pneumatic center regulates the rate and depth of breathing, while the inhibitory center helps in controlling the duration and intensity of breathing. Therefore, these centers are directly involved in the overall process of breathing. Choices A, C, and D are incorrect as they are specific components or stages of the breathing process, whereas the correct answer encompasses the entire act of breathing, making it the most comprehensive and appropriate choice.

Correct Answer: A

Rationale: The correct answer is A: Central nervous system. The respiratory mechanism is controlled by the brainstem, specifically the medulla oblongata and pons. These areas of the central nervous system regulate breathing by monitoring levels of carbon dioxide and oxygen in the blood. The medulla sets the basic rhythm of breathing, while the pons helps fine-tune the breathing rate. Choices B, C, and D are incorrect because while the sympathetic and parasympathetic nervous systems are involved in regulating various bodily functions, they do not directly control the respiratory mechanism. The autonomic nervous system, which includes both the sympathetic and parasympathetic divisions, plays a role in involuntary functions like heart rate and digestion, but it is not the primary controller of breathing.

Correct Answer: D

Rationale: The correct answer is D because the trachea shifted towards the opposite side indicates a potential pneumothorax, a serious complication following thoracentesis. Immediate action is needed to prevent respiratory distress. Choices A and B are common post-procedural findings and may not require immediate action. Choice C, while indicating hypoxemia, does not pose an immediate threat compared to a tracheal deviation.

Correct Answer: A

Rationale: The correct answer is A: a headache. Nasal drainage with a nasal fracture can indicate a potential cerebrospinal fluid leak, leading to a headache. This symptom requires immediate attention to rule out serious complications. Choice B is incorrect because difficulty with vision is not typically associated with a nasal fracture. Choice C is incorrect as collecting drainage on filter paper does not address the client's symptoms. Choice D is incorrect as blowing the nose can exacerbate the fracture and should be avoided.