BIOL 251 Quiz 1 (GRADED A+) Questions and Answer solutions. American Public University

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BIOL 251 Quiz 1 The function of the placental hormone human placental lactogen (hPL) is to . • A. prepare the breasts for lactation • B. nourish the placenta • ... C. regulate the menstrual cycle • D. help the placenta to mature • E. All of the above are true. Feedback:26. The function of the placental hormone human placental lactogen (hPL) is to prepare the breasts for lactation Question 2 of 25 0.0 / 4.0 Points Cushing’s disease is a disorder caused by . A. abnormally high levels of cortisol • B. abnormally high levels of epinephrine • C. abnormally low levels of cortisol • D. abnormally low levels of aldosterone • E. abnormally high levels of aldosterone Feedback:Cushing’s disease is a disorder caused by abnormally high levels of cortisol. Question 3 of 25 4.0 / 4.0 Points Which of the following statements about insulin is true? • A. Insulin acts as a transport protein, carrying glucose across the cell membrane. B. Insulin facilitates the movement of intracellular glucose transporters to the cell membrane. • C. Insulin stimulates the breakdown of stored glycogen into glucose. • D. Insulin stimulates the kidneys to reabsorb glucose into the bloodstream. • E. Two of the above are true statements. Feedback:Good work; your answer is correct! Question 4 of 25 4.0 / 4.0 Points The primary hormones produced by the ovaries are . • A. Estrogen • B. FSH and LH • C. Prolactin • D. Progesterone • E. Testosterone Feedback:Good work; your answer is correct! Question 5 of 25 4.0 / 4.0 Points The parathyroid glands are tiny, round structures usually found embedded in the posterior surface of the . • A. Pituitary gland • B. Hypothalamus • C. Pancreas • D. Thyroid gland • E. Adrenal glands Feedback:Good work; your answer is correct! Question 6 of 25 4.0 / 4.0 Points Stage one of GAS is called the alarm reaction. This is short-term stress, the fight-or-flight response, mediated by the hormones and from the adrenal medulla. • A. Epinephrine; norepinephrine • B. Aldosterone; angiotensin • C. Testosterone; estrogen • D. Insulin; glucagon • E. Cortisol; hydrocortisone Feedback:Good work; your answer is correct! Question 7 of 25 4.0 / 4.0 Points The hypothalamus is functionally and anatomically connected to the posterior pituitary lobe by a bridge of . • A. cartilage • B. nerve axons • C. blood vessels D. muscle • E. bone Feedback:Good work; your answer is correct! Question 8 of 25 4.0 / 4.0 Points The hormones of the human body can be divided into which of the following major group(s)? • A. Sex hormones • B. CNS hormones • C. Hormones derived from amino acids • D. Hormones derived from lipids E. C and D above are correct. Feedback:Good work; your answer is correct! Question 9 of 25 4.0 / 4.0 Points Which of the following can result from hyperparathyroidism? • A. increased bone deposition • B. fractures • C. convulsions • D. low blood calcium levels • E. All of the above are true. Feedback:Good work; your answer is correct! Question 10 of 25 4.0 / 4.0 Points The alpha cells of the pancreatic islets produce and secrete . • A. insulin • B. glucagon • C. epinephrine • D. alphagen • E. All of the above Feedback:Good work; your answer is correct! Question 11 of 25 0.0 / 4.0 Points How many hormones are produced by the posterior pituitary? • A. 2 • B. 6 • C. 3 • D. 0 • E. 1 Feedback:The hormones oxytocin and ADH are released from the posterior pituitary, but no hormones are produced there. Question 12 of 25 4.0/ 4.0 Points Which of the following statements about the thyroid gland is true? • B. The parathyroid glands are embedded within it. • C. It manufactures three hormones. • D. It is controlled by the anterior part of the pituitary gland. • E. All of the above are true. Feedback:Good work; your answer is correct! Question 13 of 25 4.0 / 4.0 Points What secretory cell type is found in the adrenal medulla? • A. follicle cells • C. oxyphil cells • D. neuroglial cells • E. beta cells Feedback:Good work; your answer is correct! Question 14 of 25 4.0 / 4.0 Points The parathyroid glands are small structures located on the posterior thyroid gland that produce parathyroid hormone (PTH), which regulates blood levels. • A. potassium • B. insulin • C. calcium • D. thyroid hormone • E. adrenalin Feedback:Good work; your answer is correct! Question 15 of 25 4.0 / 4.0 Points The signaling done by the endocrine system is accomplished by the use of chemicals called . • A. electrical signals • B. transmitters • C. action potentials • D. electrons • E. hormones Feedback:Good work; your answer is correct! Part 2 of 6 - Part 2 8.0/ 8.0 Points This is a review from BIOL250, OpenStax Anatomy and Physiology chapter 1 Question 16 of 25 4.0 / 4.0 Points The smallest independently functioning unit of a living organism is a(an): • A. cell • B. atom • C. tissue D. molecule • E. organ Feedback:Good work; your answer is correct! Question 17 of 25 4.0 / 4.0 Points Which of the following statements is(are) correct when discussing homeostasis? • A. Maintaining homeostasis requires that the body continuously monitor its internal conditions. • B. A sensor, also referred to a receptor, is a component of a feedback system that monitors a physiological value. • C. This value is then reported to the control center. The control center is the component in a feedback system that compares the value to the normal range. D. If there is a condition that needs to be changed, an effector is the component in a feedback system that causes a change to reverse the situation and return the value to the normal range. • E. All of the above are correct/true. Feedback:Good work; your answer is correct! Part 3 of 6 - Part 3 4.0/ 8.0 Points This is a review from BIOL250, OpenStax Anatomy and Physiology chapter 3 Question 18 of 25 0.0 / 4.0 Points Which type of stem cell gives rise to red and white blood cells? • A. blood • B. endothelial • C. epithelial D. hematopoietic • E. mesenchymal Feedback:A hematopoietic stem cell can give rise to either red blood cells or white blood cells. Question 19 of 25 4.0 / 4.0 Points What scientist is given credit for coming up with the concept of the cell? • A. Robert Hooke • B. Michelangelo • C. Galileo • D. Albert Einstein E. Michael Curie Feedback:Good work; your answer is correct! Part 4 of 6 - Part 4 8.0/ 8.0 Points This is a review from BIOL250, OpenStax Anatomy and Physiology chapter 6 Question 20 of 25 4.0 / 4.0 Points Which type of joint is freely moveable, such as the elbow and knee? • A. Fibrous • B. Sutures • C. Synovial • D. Synarthrosis E. Osteoarthrosis Feedback:Good work; your answer is correct! Question 21 of 25 4.0 / 4.0 Points What is the fibrocartilage padding in between the vertebrae called? • A. Costal Cartilage • B. Spinal Tendon • C. Thoracic Cartilage • D. Intervertebral Disc • E. Vertebral Gel Sac Feedback:Good work; your answer is correct! Part 5 of 6 - Part 5 8.0/ 8.0 Points This is a review from BIOL250, OpenStax Anatomy and Physiology chapter 10 Question 22 of 25 4.0 / 4.0 Points Which structures of cardiac muscle allows the cells to contract in waves so the heart can work as a pump? • A. Nucleus • B. Gap junction • C. Intercalated discs • D. Desmosome • E. Syncytium Feedback:Good work; your answer is correct! Question 23 of 25 4.0 / 4.0 Points All of the following are functions of skeletal muscles except for which? • A. Produce heat • B. Maintain balance • C. Stop movement • D. Regulate blood pressure • E. Produce movement Feedback:Good work; your answer is correct! Part 6 of 6 - Part 6 8.0/ 8.0 Points This is a review from BIOL250, OpenStax Anatomy and Physiology chapter 12 Question 24 of 25 4.0 / 4.0 Points The two general types of cells found in the nervous system are and . A. Neurons; nodes of Ranvier • B. Neurons; glial cells • C. Astrocytes; oligodendrocytes • D. Neurons; target cells • E. Glial cells; myelin cells Feedback:Good work; your answer is correct! Question 25 of 25 4.0 / 4.0 Points Voltage-gated sodium channels open upon reaching what state? • A. Overshoot B. Repolarization • C. Resting potential • D. Threshold Feedback:Correct. This can be found in the OpenStax Overview of Anatomy and Physiology section. Section 12.4. [Show More]

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