Which system is responsible for the fight or flight response in stressful situations?
Enteric nervous system
Central nervous system
Peripheral nervous system
Autonomic nervous system
The Correct Answer is D
A. Enteric nervous system: The Enteric nervous system is a mesh-like system of neurons that governs the function of the gastrointestinal tract (the "brain of the gut"). It manages digestion, not the systemic stress response.
B. Central nervous system: While the brain (specifically the hypothalamus and amygdala) perceives the threat, the execution of the physiological "fight or flight" changes (racing heart, dilated pupils) is carried out by the autonomic nerves.
C. Peripheral nervous system: Similar to Question 45, this is a broad anatomical term. While the stress response nerves are located in the periphery, the specific functional system is the Autonomic Nervous System.
D. Autonomic nervous system: The Autonomic Nervous System has two main branches: the Sympathetic and the Parasympathetic. The Sympathetic division is directly responsible for the "fight or flight" response, mobilizing the body's energy during stress.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Olfactory nerve (CN I):The Olfactory nerve is a pure sensory nerve responsible for the sense of smell. It is tested by asking the patient to identify common scents (like coffee or mint) with their eyes closed.
B. Facial nerve (CN VII):The Facial nerve controls facial expressions and provides taste sensation to the anterior two-thirds of the tongue, but it is not involved in smell.
C. Optic nerve (CN II):The Optic nerve transmits visual information from the eyes to the brain.
D. Trigeminal nerve (CN V):The Trigeminal nerve is responsible for facial sensation (touch/pain) and motor functions like chewing. It can sense the "sting" of ammonia (a pain response), but not actual odors.
Correct Answer is A
Explanation
A. Providing support and reducing friction:The peritoneum is a continuous serous membrane that lines the abdominal cavity and covers the abdominal organs. It secretes a lubricating serous fluid that allows organs to glide against each other without friction during digestion and movement. It also helps suspend organs in place via folds (mesenteries).
B. Producing digestive enzymes:Digestive enzymes are primarily produced by the glandular organs such as the pancreas, salivary glands, stomach lining, and the small intestine, not the peritoneal membrane.
C. Storing bile:Bile is produced by the liver and stored/concentrated in the gallbladder.
D. Filtering waste products:The filtration of waste products from the blood is the primary function of the kidneys(and to a metabolic extent, the liver), not the peritoneum.
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