Nokea
The posterior pituitary stores and releases:
- A. Growth hormone and prolactin.
- B. Prolactin and oxytocin.
- C. Oxytocin and antidiuretic hormone (ADH).
- D. ADH and growth hormone.
Correct Answer: C
Rationale: The correct answer is C: Oxytocin and antidiuretic hormone (ADH). The posterior pituitary stores and releases oxytocin and ADH, also known as vasopressin. Oxytocin is involved in uterine contractions and milk ejection, while ADH regulates water reabsorption in the kidneys. Choices A, B, and D are incorrect because the posterior pituitary does not store or release growth hormone or prolactin.
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A diabetic patient is found unconscious at home and a family member calls the clinic. After determining that a glucometer is not available, what should the nurse advise the family member to do?
- A. Have the patient drink some orange juice.
- B. Administer 10 U of regular insulin subcutaneously.
- C. Call for an ambulance to transport the patient to a medical facility.
- D. Administer glucagon 1 mg intramuscularly (IM) or subcutaneously.
Correct Answer: D
Rationale: If the patient is unconscious and unable to swallow, glucagon should be administered to raise blood glucose levels safely.
Catecholamines:
- A. include cortisol, aldosterone, and testosterone.
- B. are secreted by the adrenal cortex.
- C. lower plasma glucose levels.
- D. include epinephrine (adrenalin) and norepinephrine.
Correct Answer: D
Rationale: Rationale for Correct Answer D: Catecholamines include epinephrine and norepinephrine. These hormones are produced by the adrenal medulla in response to stress and play a crucial role in the fight-or-flight response. Epinephrine increases heart rate and blood flow to muscles, while norepinephrine helps maintain blood pressure. These actions help the body respond to stressful situations.
Summary of Other Choices:
A: Incorrect. Cortisol, aldosterone, and testosterone are not catecholamines. They are steroid hormones produced by the adrenal cortex.
B: Incorrect. Adrenal cortex secretes cortisol and aldosterone, not catecholamines.
C: Incorrect. Catecholamines actually increase plasma glucose levels to provide energy during stress.
Why can a single endocrine hormone produce a wider spread of responses in more of the body than a single nerve cell?
- A. A single hormone can target many different responses, whereas a nerve only targets a single response.
- B. Blood can carry all the same hormones throughout the body simultaneously, producing responses all over the body; nerve cells can only target a small number of cells.
- C. Nerve cells and blood work together. The endocrine has nothing to do with the nervous system.
- D. Endocrine hormones only target a very small number of precise responses.
Correct Answer: B
Rationale: The correct answer is B because the bloodstream can carry hormones throughout the body simultaneously, reaching various target cells and organs. This enables a single endocrine hormone to produce responses in multiple parts of the body. In contrast, nerve cells can only target a limited number of cells through direct connections. Choice A is incorrect because endocrine hormones can also target multiple responses, not just one. Choice C is incorrect as the endocrine system and nervous system can interact. Choice D is incorrect as endocrine hormones can have broad effects on multiple target cells.
The tongue plays an important part in:
- A. Digestion, mastication, swallowing
- B. Ingestion, taste, digestion
- C. Mastication, elimination, swallowing
- D. Swallowing, mastication, taste
Correct Answer: D
Rationale: The correct answer is D because the tongue is primarily involved in swallowing, mastication (chewing), and taste perception. Swallowing is a crucial function of the tongue as it helps move food towards the throat. Mastication involves the tongue's movement to mix food with saliva and initiate the digestion process. Taste buds on the tongue are responsible for detecting different flavors. Choices A, B, and C are incorrect as they do not accurately describe the key functions of the tongue.
The largest endocrine gland(s) that makes 3 hormones that affect the metabolism is the:
- A. pancreas
- B. adrenal glands
- C. thyroid gland
- D. pituitary gland
Correct Answer: C
Rationale: The correct answer is C: thyroid gland. The thyroid gland is the largest endocrine gland that produces 3 hormones (T3, T4, and calcitonin) that regulate metabolism. T3 and T4 control the body's metabolic rate, while calcitonin helps regulate calcium levels in the blood. The pancreas (A) primarily produces insulin and glucagon to regulate blood sugar levels. The adrenal glands (B) produce hormones like cortisol and adrenaline to regulate stress response. The pituitary gland (D) controls various other endocrine glands but does not primarily produce hormones affecting metabolism.