Nokea
Which of the following hormones come from anterior lobe of the pituitary gland?
- A. Inhibin
- B. Adrenocorticotropic hormone
- C. Triiodothyronine
- D. Oxytocin
Correct Answer: b
Rationale: The correct answer is B: Adrenocorticotropic hormone (ACTH). ACTH is produced by the anterior lobe of the pituitary gland and stimulates the adrenal cortex to secrete cortisol. Inhibin is produced in the ovaries and testes, not the pituitary gland. Triiodothyronine is a thyroid hormone produced by the thyroid gland, not the pituitary gland. Oxytocin is produced by the posterior lobe of the pituitary gland, not the anterior lobe. Therefore, the correct answer is B because it is the hormone that originates from the anterior lobe of the pituitary gland.
You may also like to solve these questions
A diabetic patient presents with hot and dry skin, rapid and deep respirations, and a fruity odor to his breath. As charge nurse, you observe the new graduate RN accomplishing all these patient tasks. Which one requires that you intervene immediately?
- A. The RN checks the patient's fingerstick glucose.
- B. The RN encourages the patient to drink orange juice.
- C. The RN checks the patient's order for sliding scale insulin.
- D. The RN assesses the patient's vital signs every 15 minutes.
Correct Answer: B
Rationale: Encouraging the patient to drink orange juice in the presence of rapid, deep breathing, and fruity breath odor could worsen DKA. The patient needs immediate medical intervention, including IV fluids and insulin, rather than oral intake.
Hormones are produced by which of the following systems?
- A. Exocrine system
- B. Digestive system
- C. Endocrine system
- D. Nervous system
Correct Answer: C
Rationale: The correct answer is C, the Endocrine system. Hormones are chemical messengers produced by endocrine glands and released into the bloodstream to regulate various bodily functions. The exocrine system (A) secretes substances through ducts, not hormones. The digestive system (B) processes food and absorbs nutrients but does not produce hormones. The nervous system (D) controls body functions through electrical signals, not hormonal regulation. Therefore, the Endocrine system is the correct choice for hormone production.
In relation to noradrenaline, all of the following are true EXCEPT:
- A. It stimulates α and β receptors
- B. It decreases heart rate
- C. It decreases blood pressure
- D. Causes vasoconstriction
Correct Answer: C
Rationale: Rationale:
- Noradrenaline stimulates both α and β receptors, leading to increased heart rate and vasoconstriction.
- It does not decrease heart rate; it actually increases heart rate due to its actions on β receptors.
- Noradrenaline causes vasoconstriction by activating α receptors, leading to increased blood pressure.
- The incorrect statement is C, as noradrenaline actually increases blood pressure by causing vasoconstriction.
The transcription of new messenger RNA is a function of __________.
- A. pancreatic hormones
- B. steroid hormones
- C. catecholamines
- D. pituitary gland hormones
Correct Answer: B
Rationale: The correct answer is B: steroid hormones. Steroid hormones are known to regulate gene expression by binding to specific receptors and influencing transcription processes. They can directly affect the transcription of new messenger RNA in the cell. Pancreatic hormones (A), catecholamines (C), and pituitary gland hormones (D) are not directly involved in the transcription of new messenger RNA. Pancreatic hormones primarily regulate blood sugar levels, catecholamines are involved in the fight-or-flight response, and pituitary gland hormones regulate various functions such as growth, reproduction, and metabolism.
Sometimes prolonged excessive exposure to high hormone concentrations causes a phenomenon known as ________.
- A. diabetes mellitus
- B. cellular inhibition
- C. down-regulation
- D. metabolism of protein kinases
Correct Answer: C
Rationale: The correct answer is C: down-regulation. Prolonged exposure to high hormone concentrations can lead to down-regulation, where cells decrease their responsiveness to the hormone by reducing the number of hormone receptors. This is a regulatory mechanism to prevent overstimulation.
A: Diabetes mellitus is a chronic condition characterized by high blood sugar levels, usually caused by insulin deficiency or insulin resistance, not directly related to prolonged exposure to high hormone concentrations.
B: Cellular inhibition is a broad term that may refer to various cellular processes being inhibited, but it is not a specific phenomenon resulting from prolonged exposure to high hormone concentrations.
D: Metabolism of protein kinases is a cellular process involved in signal transduction, but it is not a direct consequence of prolonged exposure to high hormone concentrations.