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5 Written questions

5 Matching questions

  1. Thyroid Gland
  2. Estrogen & Progesterone
  3. Second Messenger
  4. Release-Inhibiting Hormone
  5. Thymosin
  1. a This is an amino acid-based hormone that is secreted by the thymus gland. The hormone stimulates the maturation of T cells, which help defend the body from pathogens.
  2. b These sex hormones are stimulated to be produced by LH and FSH in females. In preparation for a possible pregnancy, these sex hormones cause the monthly release of an egg by an ovary and buildup of the uterine lining. Estrogen also regulates female secondary sex characteristics.
  3. c Located near the lower part of the larynx, this endocrine gland secretes the hormones thyroxine and triiodothyronine. Both of these hormones are derived from the same amino acid and are synthesized with iodine atoms. Thyroid-stimulating hormones (TSH) regulates the release of the thyroid hormones. Release of TSH from the anterior pituitary gland is regulated by the hypothalamus. The thyroid gland is important because it promotes human development because it produces calcitonin which stimulates the transfer of calcium ions from the blood to the bone. The thyroid hormones help maintain normal heart rate, blood pressure and body temperature. They also stimulate enzymes that are associated with glucose oxidation, oxygen consumption, generating heat, and increasing cellular metabolic rates. Lastly, they promote carbohydrate usage over fat usage for energy.
  4. d These inhibit production and secretion of anterior-pituitary hormones.
  5. e A molecule that causes changes inside a cell in response to the binding of a specific substance to a receptor on the outside of a cell. Cyclic AMP is a common second messenger. ATP is converted to make cAMP.

5 Multiple choice questions

  1. Secrete substances through ducts (basically tubes). These substances can be water, enzymes, and mucus.
  2. It is caused by insulin deficiency in the body. This condition means that cell are unable to obtain glucose, resulting in abnormally high blood glucose readings.
  3. A group of sex hormones secreted by the testes.
  4. A group of neuropeptides that inhibits pain messages traveling towards the brain.
  5. A group of neuropeptides that regulate emotions, influence pain, and affect reproduction.

5 True/False questions

  1. TestosteroneA hormone secreted by digestive cells that stimulates other stomach cells to release digestive enzymes such as hydrochloric acid.


  2. Luteinizing Hormone (LH)Stimulate the anterior pituitary to make and secrete hormones.


  3. SecretinThis hormone is secreted by the pineal gland and probably helps regulate sleep patterns.


  4. Pituitary GlandThis gland is located near the base of the brain and it secretes melatonin.


  5. ProstaglandinsModified fatty acids that are secreted by most cells. They accumulate in areas where tissues are disturbed or injured. Some reduce blood pressure, and others raise blood pressure. Some cause smooth muscles to contract while still others cause smooth muscles to relax. Some even cause fever. Aspirin and acetaminophen reduce fever and decrease pain by inhibiting prostaglandin synthesis.


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