Bio 2 Ch. 45 Dynamic Study Module Questions Fully Solved /2024.

Which of the following statements is an accurate description of the function of hormones in homeostasis? - correct answer homeostasis in humans is maintained by many of the same hormones that have regulatory roles in other animals Which of the following statements is an accurate description of sex hormones? - correct answer the sex hormones have effects on tissues other than those comprising the reproductive system Which of the following is a pair of hormones that function to regulate blood calcium in mammals? - correct answer parathyroid hormone and calcitonin Which of the following functions as a local regulator? - correct answer prostaglandin As a young girl, Maria suffered a head injury that damaged her pituitary. An injury to the pituitary is particularly serious because of all the functions controlled by this gland. As Maria got older, she and her doctors found that all of the following except her __________ were affected. - correct answer blood sugar level How is the level of thyroxine in the blood regulated? - correct answer high levels of T3 and T4 inhibit the secretion of TRH and TSH The major tropic action of growth hormone is to signal the ________ to release _______ - correct answer ~liver ~insulin-like growth factors (IGFs) How does the hypothalamus control the secretion of growth hormone (GH) from the anterior pituitary? - correct answer the hypothalamus produces a releasing hormone that stimulates the pituitary to secrete GH The functional relationship between the anterior pituitary and the posterior pituitary is that? - correct answer they both release hormones in response to signals from the hypothalamus A cell releases a cytokine, which binds to, and acts on, a neighboring cell. This represents an example of? - correct answer paracrine signaling Which hormone functions in both the body's stress response and in the maintenance of salt and water balance? - correct answer aldosterone Any signaling molecule referred to as a neurohormone? - correct answer is produced by a neuron In insects, ecdysteroid is released? - correct answer in response to prothoracicotropic hormone Ibuprofen is known for its pain-relieving and anti-inflammatory properties because it inhibits the synthesis of? - correct answer prostaglandins Which of the following statements is an accurate description of the regulation of the endocrine system? - correct answer hormone pathways are regulated by both positive- and negative-feedback loops Type 1 diabetes mellitus? - correct answer is an autoimmune disease in which the immune system attacks beta cells in the pancreas A goiter may form because? - correct answer low blood levels of T3 and T4 inhibit the negative feedback loop, and an overload of TSH causes enlargement of the gland Which of the following statements is an accurate description of external effects on hormones? - correct answer certain molecules in the environment can function like hormones or block the actions of hormones Which of the following hormones is thought to act at the cellular level by inducing a change in gene expression? - correct answer estrogen The brain region that most directly integrates the endocrine and nervous systems in mammals is the? - correct answer hypothalamus Every time you eat a cookie or candy bar, your blood sugar increases. This triggers an increase in the hormone? - correct answer insulin A signaling molecule is released from the adrenal gland and, after being transported through the blood, enters a cell, where it binds to a receptor and then moves into the nucleus, where it alters gene expression. What type of signaling molecule would this most likely be? - correct answer steroid An autocrine signal produced by a T cell has an effect on a? - correct answer T cell Which of the following is a pair of hormones that have antagonistic effects? - correct answer insulin and glucagon Which of the following conditions in a silkworm moth would result in metamorphosis from pupa to adult? - correct answer low concentration of juvenile hormone and high concentration of ecdysteroid FSH (follicle-stimulating hormone) and LH (luteinizing hormone) are tropic hormones that are also known as? - correct answer gonadotropins Which disorder is correctly matched with its cause? - correct answer Pituitary dwarfism; hyposecretion of growth hormone Which of the following is not a tropic hormone? - correct answer Melanocyte-stimulating hormone (MSH) In regard to its role in the endocrine system, nitric oxide (NO) is best described as? - correct answer a local regulator Hyperthyroidism, typically characterized by a high metabolic rate and high blood pressure, might be expected when? - correct answer thyroid-stimulating hormone (TSH) concentration is high