Endocrine System Stokke N180
Questions and Answers
- 1.
All of the following are roles of the endocrine system EXCEPT:
- A.
Maintain internal environment
- B.
Regulate energy availability
- C.
Impacts growth and development
- D.
None of the above
Correct Answer
D. None of the aboveExplanation
The endocrine system plays a crucial role in maintaining the internal environment of the body by regulating various processes such as metabolism, temperature, and fluid balance. It also helps in regulating energy availability by controlling the release of hormones that affect the breakdown and storage of nutrients. Additionally, the endocrine system impacts growth and development by secreting hormones that stimulate cell division and differentiation. Therefore, the correct answer is "none of the above" as all of the given options are roles of the endocrine system.Rate this question:
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- 2.
Which of the following is NOT true of endocrine glands?
- A.
They secrete products directly into the target organ
- B.
They secrete products into the blood
- C.
They are ductless glands
Correct Answer
A. They secrete products directly into the target organExplanation
Endocrine glands do not secrete products directly into the target organ. Instead, they secrete products into the bloodstream, which then carries the hormones to the target organs or tissues. These glands are ductless, meaning they do not have ducts or tubes to transport their secretions.Rate this question:
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- 3.
The endocrine system functions independantly of other systems
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The endocrine system does not function independently of other systems. It works in conjunction with the nervous system to regulate various bodily functions. The endocrine glands release hormones into the bloodstream, which then travel to target cells or organs to initiate a response. This communication and coordination between systems highlight the interdependence of the endocrine system with other systems in the body. Therefore, the given statement is false.Rate this question:
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- 4.
The products that both the nervous system AND the endocrine system produce are:
- A.
Steroids
- B.
Catecholamines
- C.
Oxytocin
Correct Answer
B. CatecholaminesExplanation
Both the nervous system and the endocrine system produce catecholamines. Catecholamines are a type of neurotransmitter that are produced in the adrenal glands and released into the bloodstream. They play a role in the body's response to stress and are involved in regulating various physiological processes such as heart rate, blood pressure, and metabolism.Rate this question:
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- 5.
Which of the following is a complete list of the hormones produced by the ANTERIOR pituitary gland?
- A.
ADH and oxytocin
- B.
ACTH, oxytocin, aldosterone, epinephrine, norepinephrine, growth hormone, thyroid stimulating hormone, and ADH
- C.
TSH, luteinizing hormone, follicle stimulating hormone, prolactin, GH, ACTH, and melancyte stimulating hormone
Correct Answer
C. TSH, luteinizing hormone, follicle stimulating hormone, prolactin, GH, ACTH, and melancyte stimulating hormoneExplanation
The correct answer is TSH, luteinizing hormone, follicle stimulating hormone, prolactin, GH, ACTH, and melancyte stimulating hormone. These hormones are all produced by the anterior pituitary gland.Rate this question:
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- 6.
Which of the following is a complete list of the hormones released by the POSTERIOR pituitary gland?
- A.
ADH and oxytocin
- B.
ACTH, oxytocin, aldosterone, epinephrine, norepinephrine, growth hormone, thyroid stimulating hormone, and ADH
- C.
TSH, luteinizing hormone, follicle stimulating hormone, prolactin, GH, ACTH, and melancyte stimulating hormone
Correct Answer
A. ADH and oxytocinExplanation
The correct answer is ADH and oxytocin. The posterior pituitary gland releases only two hormones, which are antidiuretic hormone (ADH) and oxytocin. These hormones are produced in the hypothalamus and stored in the posterior pituitary gland until they are released into the bloodstream. ADH helps regulate water balance in the body, while oxytocin is involved in various reproductive functions such as childbirth and breastfeeding.Rate this question:
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- 7.
Which of the following are ENDOCRINE functions of the hypothalamus?
- A.
Regulation of temperature, sleep, hunger, thirst
- B.
Regulates GH and TRH and stimulates release of LH, FSH, and ACTH
- C.
Stimulates ovulation and testosterone secretion, regulates GH and TRH
Correct Answer
B. Regulates GH and TRH and stimulates release of LH, FSH, and ACTHExplanation
The correct answer is "regulates GH and TRH and stimulates release of LH, FSH, and ACTH." The hypothalamus is responsible for regulating the release of several hormones, including growth hormone (GH), thyrotropin-releasing hormone (TRH), luteinizing hormone (LH), follicle-stimulating hormone (FSH), and adrenocorticotropic hormone (ACTH). These hormones play important roles in various endocrine functions such as growth and development, thyroid regulation, reproductive function, and stress response.Rate this question:
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- 8.
Which of the following hormones are released from the ADRENAL CORTEX?
- A.
Mineral corticoids, glucocorticoids, and sex hormones
- B.
Catecholamines
- C.
Androgens, catecholamines, and glucocorticoids
Correct Answer
A. Mineral corticoids, glucocorticoids, and sex hormonesExplanation
The correct answer is mineral corticoids, glucocorticoids, and sex hormones. The adrenal cortex, the outer layer of the adrenal glands, is responsible for producing and releasing these hormones. Mineral corticoids, such as aldosterone, regulate electrolyte and fluid balance in the body. Glucocorticoids, such as cortisol, play a role in regulating metabolism and immune responses. Sex hormones, including androgens and estrogens, are also produced by the adrenal cortex, although in smaller amounts compared to the gonads.Rate this question:
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- 9.
Aldosterone effects blood pressure PRIMARILY through which path?
- A.
High BP -> kidneys release renin -> angiotensin I -> angiotensin II -> increased aldosterone -> lower BP
- B.
Low BP -> ACTH released by pituitary gland -> increase in aldosterone -> increase in BP
- C.
Low BP -> kidneys release renin -> angiotensin I -> angiotensin II -> increase aldosterone -> increase in BP
Correct Answer
C. Low BP -> kidneys release renin -> angiotensin I -> angiotensin II -> increase aldosterone -> increase in BPExplanation
Aldosterone primarily affects blood pressure by increasing it. When blood pressure is low, the kidneys release renin. Renin then converts angiotensinogen into angiotensin I. Angiotensin I is converted into angiotensin II, which stimulates the release of aldosterone. Aldosterone causes the kidneys to retain sodium and water, which leads to an increase in blood volume and subsequently an increase in blood pressure. Therefore, the correct answer is "low BP -> kidneys release renin -> angiotensin I -> angiotensin II -> increase aldosterone -> increase in BP".Rate this question:
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- 10.
ACTH is short for ____________ , is released by the __________ gland and effects the release of ____________.
- A.
Adrenocoricotropin homrone; posterior pituitary; aldosterone
- B.
Adrenocoricotropin hormone; anterior pituitary; cortisol and aldosterone
- C.
Adrenocoricotropin hormone; anterior pituitary; cortisol
- D.
Adrenocoricotropin hormone; posterior pituitary; cortisol and catecholamines
Correct Answer
B. Adrenocoricotropin hormone; anterior pituitary; cortisol and aldosteroneExplanation
ACTH, or adrenocorticotropic hormone, is released by the anterior pituitary gland and affects the release of cortisol and aldosterone.Rate this question:
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- 11.
What is the function of TSH?
- A.
Increases the release of TRH
- B.
Increases the overall activity of the thyroid gland
- C.
Increases the conversion of T3 into T4
Correct Answer
B. Increases the overall activity of the thyroid glandExplanation
TSH, or thyroid-stimulating hormone, increases the overall activity of the thyroid gland. This hormone is produced by the pituitary gland and stimulates the release of thyroid hormones, such as T3 and T4. By increasing the overall activity of the thyroid gland, TSH helps regulate the body's metabolism, growth, and development.Rate this question:
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- 12.
What is the function of GnRH?
- A.
Stimulates the release of GH
- B.
Inhibits the release of GH
- C.
Stimulates the release of LH and FSH
Correct Answer
C. Stimulates the release of LH and FSHExplanation
GnRH, or Gonadotropin-Releasing Hormone, is responsible for stimulating the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland. These hormones play crucial roles in the reproductive system. LH stimulates the release of eggs in females and testosterone production in males, while FSH is involved in the development of eggs in females and sperm production in males. Therefore, GnRH is essential for the regulation of reproductive processes by stimulating the release of LH and FSH.Rate this question:
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- 13.
The following are hormones released by the hypothalamus that target the anterior pituitary gland: TRH, GnRH, GH-RH, GH-IH, CRH, PIH, MIH.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the hypothalamus does release hormones that target the anterior pituitary gland. These hormones include TRH (thyrotropin-releasing hormone), GnRH (gonadotropin-releasing hormone), GH-RH (growth hormone-releasing hormone), GH-IH (growth hormone-inhibiting hormone), CRH (corticotropin-releasing hormone), PIH (prolactin-inhibiting hormone), and MIH (melanocyte-inhibiting hormone). These hormones play important roles in regulating various functions of the anterior pituitary gland, such as the release of thyroid-stimulating hormone, luteinizing hormone, growth hormone, adrenocorticotropic hormone, prolactin, and melanocyte-stimulating hormone.Rate this question:
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- 14.
Luteinizing Hormone (LH) is released by the __________ and targets the _____________.
- A.
Anterior pituitary; bone and soft tissue
- B.
Posterior pituitary; adrenal cortex
- C.
Anterior pituitary; ovaries and testes
- D.
Posterior pituitary; kidneys
Correct Answer
C. Anterior pituitary; ovaries and testesExplanation
Luteinizing Hormone (LH) is released by the anterior pituitary gland and targets the ovaries and testes. LH plays a crucial role in the reproductive system by stimulating ovulation in females and testosterone production in males. It helps regulate the menstrual cycle in females and the production of sperm in males.Rate this question:
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- 15.
Which of the following are hormones produced in the adrenal MEDULLA?
- A.
Mineral corticoids, glucocorticoids, androgens, and estrogens
- B.
Catecholamines
- C.
Mineral corticoids, glucocorticoids, androgens, estrogens, and catecholamines
Correct Answer
B. CatecholaminesExplanation
Catecholamines are hormones produced in the adrenal medulla. The adrenal medulla is responsible for the production and release of catecholamines such as adrenaline (epinephrine) and noradrenaline (norepinephrine). These hormones play a crucial role in the body's response to stress, by increasing heart rate, blood pressure, and energy production. They also help regulate various physiological processes such as metabolism, blood flow, and immune response. Therefore, the correct answer is catecholamines.Rate this question:
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- 16.
Aldosterone is a __________ and it's primary function is to _____________.
- A.
Glucocorticoid; initiate gluconeogenesis and inhibit calcium re-uptake by the bones
- B.
Sex hormone; stimulate sexual maturation (secondary sex characteristics)
- C.
Mineral corticoid; maintain extracellular fluid vollume
Correct Answer
C. Mineral corticoid; maintain extracellular fluid vollumeExplanation
Aldosterone is classified as a mineral corticoid and its primary function is to maintain the volume of extracellular fluid.Rate this question:
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- 17.
Cortisol is a __________ and one of it's primary function is to _____________.
- A.
Glucocorticoid; initiate gluconeogenesis and inhibit calcium re-uptake by the bones
- B.
Sex hormone; stimulate sexual maturation (secondary sex characteristics)
- C.
Mineral corticoid; maintain extracellular fluid vollume
Correct Answer
A. Glucocorticoid; initiate gluconeogenesis and inhibit calcium re-uptake by the bonesExplanation
Cortisol is classified as a glucocorticoid, which means it plays a role in regulating glucose metabolism. One of its primary functions is to initiate gluconeogenesis, which is the process of synthesizing glucose from non-carbohydrate sources. Additionally, cortisol inhibits calcium re-uptake by the bones, which helps maintain calcium levels in the blood.Rate this question:
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- 18.
Androgen is a __________ and one of it's primary function is to _____________.
- A.
Glucocorticoid; initiate gluconeogenesis and inhibit calcium re-uptake by the bones
- B.
Sex hormone; stimulate sexual maturation (secondary sex characteristics)
- C.
Mineral corticoid; maintain extracellular fluid vollume
Correct Answer
B. Sex hormone; stimulate sexual maturation (secondary sex characteristics)Explanation
Androgen is a sex hormone that is primarily responsible for stimulating sexual maturation and the development of secondary sex characteristics. These characteristics include the growth of facial hair, deepening of the voice, and the development of muscle mass and bone density. Androgens also play a role in regulating the reproductive system and the production of sperm.Rate this question:
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- 19.
All of the following are functions of Thyroid Hormone EXCEPT:
- A.
Affects oxygen consumption and protein synthesis
- B.
Metabolism and temperature regulation
- C.
Stimulates calcium resorption and tissue growth
Correct Answer
C. Stimulates calcium resorption and tissue growthExplanation
Thyroid hormone is known to have various functions in the body, including affecting oxygen consumption and protein synthesis, as well as metabolism and temperature regulation. However, it does not stimulate calcium resorption and tissue growth. This function is primarily regulated by other hormones such as parathyroid hormone and calcitonin.Rate this question:
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- 20.
Parathyroid hormone performs which of the following functions?
- A.
Raises calcium levels by pulling calcium out of bone and increases calcium absorption from GI and kidneys
- B.
Lowers calcium levels by inhibiting calcium resorption from bone and decreases calcium absorption from GI and kidneys
- C.
All of the above
Correct Answer
A. Raises calcium levels by pulling calcium out of bone and increases calcium absorption from GI and kidneysExplanation
Parathyroid hormone raises calcium levels by pulling calcium out of bone and increases calcium absorption from the gastrointestinal (GI) tract and kidneys. This hormone stimulates the release of calcium from the bones, which helps maintain the calcium balance in the body. Additionally, it enhances the absorption of calcium from the GI tract and promotes reabsorption of calcium in the kidneys, leading to an increase in calcium levels.Rate this question:
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- 21.
All of the following are ENDOCRINE funtions of the pancreas EXCEPT:
- A.
Releasing insulin
- B.
Releasing glucagon
- C.
Releasing pepsin and amylase
Correct Answer
C. Releasing pepsin and amylaseExplanation
The pancreas is an important organ that performs both exocrine and endocrine functions. Its endocrine functions include releasing insulin and releasing glucagon. Insulin helps regulate blood sugar levels by promoting the uptake of glucose into cells, while glucagon helps increase blood sugar levels by stimulating the breakdown of glycogen. However, the pancreas does not release pepsin and amylase, which are enzymes involved in the digestion of proteins and carbohydrates respectively. Therefore, the correct answer is releasing pepsin and amylase.Rate this question:
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- 22.
True or false: ADH is produced in the hypothalamus and transported to the pituitary gland for storage.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
ADH, also known as antidiuretic hormone or vasopressin, is indeed produced in the hypothalamus. It is then transported to the pituitary gland, specifically the posterior pituitary, where it is stored and released into the bloodstream when needed. This hormone plays a crucial role in regulating water balance in the body by controlling the reabsorption of water in the kidneys. Therefore, the statement is true.Rate this question:
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- 23.
True or false: Oxytocin is produced in the anterior pituitary and transported to the posterior pituitary gland for storage.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Oxytocin is not produced in the anterior pituitary. It is actually produced in the hypothalamus and then transported to the posterior pituitary gland, where it is stored and released into the bloodstream when needed. Therefore, the statement that oxytocin is produced in the anterior pituitary and transported to the posterior pituitary gland for storage is false.Rate this question:
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- 24.
True or False: The Autocrine system is the part of the endocrine system that releases hormone that effect the releasing cell as well as other areas of the body.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The autocrine system is a part of the endocrine system that releases hormones that not only affect other areas of the body but also have an effect on the releasing cell itself. This means that the hormone released by the autocrine system acts as a feedback mechanism, influencing the cell that produced it. Therefore, the statement "The Autocrine system is the part of the endocrine system that releases hormone that effect the releasing cell as well as other areas of the body" is true.Rate this question:
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- 25.
True or False: The Paracrine system is the part of the exocrine system that releases products that effect cells neighboring the releasing cell - it has a local effect.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The correct answer is False. The Paracrine system is not part of the exocrine system, but rather a type of cell signaling in which cells release signaling molecules that affect nearby cells. It has a local effect because the signaling molecules only travel a short distance to reach the neighboring cells.Rate this question:
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- 26.
__________ feedback is the primary mode of hormone regulation and the opposite feedback _________ occur in some cases.
- A.
Positive; does
- B.
Negative; does
- C.
Negative; does not
- D.
Positive; does not
Correct Answer
B. Negative; doesExplanation
Negative feedback is the primary mode of hormone regulation, meaning that when hormone levels rise, it triggers a response to decrease hormone production. In some cases, however, the opposite feedback can occur, where hormone levels rising actually stimulates further hormone production.Rate this question:
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- 27.
All of the following are functions of ADH EXCEPT:
- A.
Promotes water resorption
- B.
Decreases serum osmolarity
- C.
Decreases urine osmolarity
- D.
Increases urine osmolarity
Correct Answer
C. Decreases urine osmolarityExplanation
ADH, or antidiuretic hormone, is responsible for promoting water resorption in the kidneys, which helps to concentrate urine and decrease urine output. It also helps to decrease serum osmolarity by increasing water reabsorption. However, it does not decrease urine osmolarity. In fact, ADH increases urine osmolarity by concentrating the urine and reducing its volume. Therefore, the correct answer is that ADH does not decrease urine osmolarity.Rate this question:
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Endocrine System Practice Test Questions and Answers
Endocrine System Practice Test Questions and Answers
A Quick Practice Test Quiz On The Endocrine System!
A Quick Practice Test Quiz On The Endocrine System!
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