Nokea
Within what approximate time frame does necrosis (cell death) occur because of lack of blood, oxygen, and glucose supplied to the brain?
- A. at least 30 minutes
- B. 20-25 minutes
- C. 12-18 minutes
- D. 4-10 minutes
Correct Answer: D
Rationale: Necrosis, or cell death, can occur within 4-10 minutes of interrupted blood flow to the brain. This underscores the importance of rapid intervention during a stroke to minimize brain damage and improve outcomes.
You may also like to solve these questions
What central fiber tract connects forebrain and brain stem structures with the hypothalamus?
- A. cardiac accelerator nerve
- B. medial forebrain bundle
- C. dorsal longitudinal fasciculus
- D. corticospinal tract
Correct Answer: B
Rationale: The correct answer is B: medial forebrain bundle. This tract connects the forebrain and brain stem structures with the hypothalamus, playing a crucial role in regulating various physiological functions. It is involved in the control of emotions, reward pathways, and feeding behaviors. The other choices are incorrect because: A) cardiac accelerator nerve is involved in regulating heart rate, not connecting forebrain structures with the hypothalamus; C) dorsal longitudinal fasciculus is associated with eye movements and visual processing, not connecting forebrain with the hypothalamus; D) corticospinal tract is responsible for voluntary motor movements, not involved in connecting forebrain structures with the hypothalamus.
Which of these physiological changes would not be considered part of the sympathetic fight-or-flight response?
- A. increased heart rate
- B. increased sweating
- C. dilated pupils
- D. increased stomach motility
Correct Answer: D
Rationale: The correct answer is D: increased stomach motility. In the sympathetic fight-or-flight response, the body prioritizes blood flow to essential organs and muscles, leading to decreased activity in non-essential functions like digestion (stomach motility). This is to conserve energy for immediate action. Increased heart rate, sweating, and dilated pupils are all part of the fight-or-flight response as they prepare the body for quick action and heightened awareness.
In helping Mrs. Iris plan her diet, which of the following foods would the nurse help her to select?
- A. Chicken
- B. Milk
- C. Ice cream
- D. Cheese
Correct Answer: A
Rationale: Protein-rich foods like chicken aid in healing and recovery.
The septum of the nasal cavity is innervated by
- A. Nasopalatine nerve from cranial nerve V2
- B. Posterior ethmoidal nerve from V1
- C. Greater palatine nerve from V2
- D. Lesser palatine nerve from V2
Correct Answer: A
Rationale: The nasopalatine nerve, a branch of the maxillary division (V2) of the trigeminal nerve, supplies sensation to the nasal septum. It is important in nasal surgeries and anesthesia.
What does an abnormal finding in the assessment of the patient's motor function suggest?
- A. Possible neurological impairment or muscle weakness.
- B. Normal muscle strength and coordination.
- C. Absence of neurological symptoms.
- D. Stable and symmetrical muscle function.
Correct Answer: A
Rationale: Abnormal motor function findings, such as weakness or asymmetry, suggest possible neurological impairment. Normal strength, coordination, and stable function are expected findings.