Hormones Of The Endocrine System

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  • 1/16 Questions

    Also called somatotropic hormone, what anterior pituitary hormone stimulates the growth of the musculoskeletal system?

    • Growth Hormone
    • Insulin
    • Oxytocin
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Endocrine System Quizzes & Trivia
About This Quiz

Explore key hormones of the endocrine system through this quiz. Assess your understanding of how hormones like Growth Hormone, Insulin, and Cortisol function. This quiz is ideal for learners interested in biology and medicine, enhancing knowledge about hormone functions and their effects on the human body.

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  • 2. 

    What is the only hormone that lowers blood glucose?

    • Prolactin

    • Insulin

    • ACTH

    Correct Answer
    A. Insulin
    Explanation
    Insulin is the only hormone that lowers blood glucose levels. It is produced by the pancreas and helps regulate blood sugar by allowing glucose to enter cells, where it is used for energy or stored for later use. Insulin also inhibits the liver from producing more glucose. When insulin levels are insufficient or ineffective, it can lead to high blood sugar levels, which is a characteristic of diabetes. Prolactin and ACTH are hormones that have different functions and do not play a role in lowering blood glucose.

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  • 3. 

    What are cortisol, aldosterone, and testosterone?

    • Calcitonin

    • ADH

    • Steroids

    Correct Answer
    A. Steroids
    Explanation
    Cortisol, aldosterone, and testosterone are all hormones that belong to the class of compounds called steroids. Steroids are organic compounds that have a specific arrangement of four rings of carbon atoms. These hormones play important roles in the body. Cortisol is involved in regulating metabolism and stress responses, aldosterone helps regulate blood pressure and electrolyte balance, and testosterone is primarily known for its role in male sexual development and reproductive function. Therefore, the correct answer is steroids, as these hormones are all classified as steroids.

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  • 4. 

    What are epinephrine and norepinephrine; sympathomimetic hormones?

    • Catecholamines

    • Releasing Hormones

    • Melanocyte-stimulating hormone (MSH)

    Correct Answer
    A. Catecholamines
    Explanation
    Epinephrine and norepinephrine are catecholamines, which are a type of hormone. Catecholamines are released by the adrenal glands and act as neurotransmitters in the sympathetic nervous system. They are often referred to as sympathomimetic hormones because they mimic the effects of the sympathetic nervous system, such as increasing heart rate, dilating blood vessels, and stimulating the release of glucose.

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  • 5. 

    What is the pancreatic hormone that increases blood glucose?

    • Glucagon

    • Insulin

    • Calcitonin

    Correct Answer
    A. Glucagon
    Explanation
    Glucagon is the correct answer because it is a pancreatic hormone that increases blood glucose levels. When blood sugar levels drop, the pancreas releases glucagon, which signals the liver to convert stored glycogen into glucose and release it into the bloodstream. This helps to raise blood glucose levels to maintain a stable balance. Insulin, on the other hand, decreases blood glucose levels by promoting the uptake of glucose into cells. Calcitonin is a hormone produced by the thyroid gland and is not involved in regulating blood glucose levels.

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  • 6. 

    What is the hormone that acts on 3 target organs (bone, kidneys, and intestine) to increase the blood levels of calcium?

    • Gonadotropins

    • Growth Hormone

    • Parathyroid Hormone

    Correct Answer
    A. Parathyroid Hormone
    Explanation
    Parathyroid hormone is the correct answer because it acts on three target organs, namely bone, kidneys, and intestine, to increase the blood levels of calcium. It stimulates the release of calcium from the bones, enhances the reabsorption of calcium by the kidneys, and promotes the absorption of calcium from the intestine.

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  • 7. 

    What stimulates the melanocytes to secrete a pigment that tans or darkens the skin?

    • Catecholamines

    • Melanocyte-stimulating hormone (MSH)

    • ADH

    Correct Answer
    A. Melanocyte-stimulating hormone (MSH)
    Explanation
    Melanocytes are the cells responsible for producing the pigment melanin, which gives color to the skin. Melanocyte-stimulating hormone (MSH) is a hormone that stimulates the melanocytes to secrete melanin. When the skin is exposed to sunlight or UV radiation, the body releases MSH, which in turn triggers the melanocytes to produce more melanin. This increased production of melanin leads to the darkening or tanning of the skin as a protective response to UV radiation. Catecholamines and ADH do not directly stimulate melanocytes to secrete pigment, making MSH the correct answer.

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  • 8. 

    TSH stimulates the thyroid gland to release what hormones?

    • T3 and T4

    • ACTH

    • Prolactin

    Correct Answer
    A. T3 and T4
    Explanation
    TSH, or thyroid-stimulating hormone, is produced by the pituitary gland and stimulates the thyroid gland to release T3 (triiodothyronine) and T4 (thyroxine) hormones. T3 and T4 are crucial for regulating metabolism, growth, and development in the body. They play a vital role in maintaining body temperature, heart rate, and energy levels. TSH acts as a messenger, signaling the thyroid gland to produce and release these hormones into the bloodstream. Therefore, the correct answer is T3 and T4.

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  • 9. 

    What includes follicle-stimulating hormone (FSH) and lutenizing hormone (LH)?

    • Releasing Hormones

    • Glucagon

    • Gonadotropins

    Correct Answer
    A. Gonadotropins
    Explanation
    FSH and LH are both hormones that are secreted by the pituitary gland and are classified as gonadotropins. Gonadotropins are a group of hormones that regulate the function of the gonads (ovaries in females and testes in males). FSH stimulates the growth and development of ovarian follicles in females and sperm production in males. LH triggers ovulation in females and stimulates testosterone production in males. Therefore, the correct answer is gonadotropins.

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  • 10. 

    What stimulates the breasts to make milk; also called lactogenic hormone?

    • Oxytocin

    • Prolactin

    • Calcitonin

    Correct Answer
    A. Prolactin
    Explanation
    Prolactin is the hormone that stimulates the breasts to make milk, also known as the lactogenic hormone. It is produced by the pituitary gland in response to the suckling or stimulation of the nipples. Prolactin levels increase during pregnancy and remain high after childbirth to initiate and maintain milk production. Oxytocin, on the other hand, is responsible for the release of milk from the breasts during breastfeeding. Calcitonin is a hormone involved in regulating calcium levels in the body and is not directly related to milk production.

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  • 11. 

    What is the posterior pituitary gland that initiates labor?

    • Oxytocin

    • Melanocyte-stimulating hormone

    • Steroids

    Correct Answer
    A. Oxytocin
    Explanation
    Oxytocin is the correct answer because it is a hormone released by the posterior pituitary gland that plays a crucial role in initiating labor. Oxytocin stimulates contractions of the uterine muscles, leading to the onset of labor. It also helps in the progression of labor by promoting the dilation and effacement of the cervix. Additionally, oxytocin is involved in the release of breast milk during breastfeeding.

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  • 12. 

    What are the parafollicular cells, thyroid gland,that stimulates osteoblastic activity?

    • Oxytocin

    • Catecholamines

    • Calcitonin

    Correct Answer
    A. Calcitonin
    Explanation
    Parafollicular cells, also known as C cells, are located in the thyroid gland. These cells produce calcitonin, a hormone that plays a role in regulating calcium levels in the body. Calcitonin inhibits osteoclast activity, which decreases bone resorption and stimulates osteoblastic activity. This leads to increased bone formation and helps maintain healthy bone density. Therefore, calcitonin is the correct answer as it stimulates osteoblastic activity.

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  • 13. 

    What are the iodine-containing hormones that regulate BMR?

    • T3 and T4

    • Growth Hormone

    • ADH

    Correct Answer
    A. T3 and T4
    Explanation
    T3 and T4 are iodine-containing hormones that regulate BMR (Basal Metabolic Rate). BMR refers to the amount of energy expended by the body at rest. T3 (triiodothyronine) and T4 (thyroxine) are produced by the thyroid gland and play a crucial role in regulating metabolism. They increase the metabolic rate, affecting the body's energy production and utilization. By increasing BMR, T3 and T4 help in maintaining body temperature, supporting growth and development, and regulating various physiological processes. Therefore, T3 and T4 are the iodine-containing hormones that directly influence BMR.

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  • 14. 

    What is the posterior pituitary hormone that is secreted in response to a low blood volume and concentrated blood, as occurs in dehydration?

    • T3 and T4

    • ADH

    • ACTH

    Correct Answer
    A. ADH
    Explanation
    ADH, or antidiuretic hormone, is secreted by the posterior pituitary gland in response to low blood volume and concentrated blood, which are common symptoms of dehydration. ADH helps to regulate water balance in the body by increasing water reabsorption in the kidneys, thus reducing urine output and conserving water. This hormone plays a key role in maintaining proper hydration levels and preventing excessive water loss in dehydrated individuals.

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  • 15. 

    Also called vasopressin?

    • ADH

    • ACTH

    • T3 and T4

    Correct Answer
    A. ADH
    Explanation
    ADH stands for antidiuretic hormone, which is also known as vasopressin. It is a hormone produced by the hypothalamus and released by the pituitary gland. ADH plays a crucial role in regulating the body's water balance by controlling the amount of water reabsorbed by the kidneys. It also acts as a vasoconstrictor, causing blood vessels to constrict and increase blood pressure. Therefore, ADH is the correct answer as it is another name for vasopressin.

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  • 16. 

    A decrease in plasma calcium is the stimulus for what's release?

    • Releasing Hormones

    • Growth Hormone

    • Parathyroid Hormone

    Correct Answer
    A. Parathyroid Hormone
    Explanation
    A decrease in plasma calcium levels triggers the release of parathyroid hormone. Parathyroid hormone helps regulate calcium levels in the body by increasing calcium absorption from the intestines, promoting calcium reabsorption from the kidneys, and stimulating the release of calcium from bones. This hormone is released by the parathyroid glands, which are small glands located in the neck. When plasma calcium levels drop, the parathyroid glands detect this decrease and respond by releasing parathyroid hormone to restore calcium balance in the body.

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  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 06, 2011
    Quiz Created by
    Alysse1207

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