ANATOMY SCIN 132 quiz 6 Questions and answers,100% CORRECT

ANATOMY SCIN 132 quiz 6 Questions and answers Part 1 of 6 - 21.0/ 24.0 Points Question 1 of 32 / 3.0 Points Which of the following is an anterior pituitary hormone? • A. TSH • B. Cortisol • C. oxytocin • D. Insulin • E. ADH Feedback:Good work; your answer is correct! Question 2 of 32 / 3.0 Points Hormones produced and released from sex organs include which of the following? • A. estrogen and progesterone • B. testosterone • C. inhibin • D. FSH and LH • E. A, B, and C are all correct Feedback:Good work; your answer is correct! Question 3 of 32 3.0/ 3.0 Points The beta cells of the pancreatic islets produce and secrete . B. glucagon • C. epinephrine • D. betagen • E. Both A and B Feedback:Good work; your answer is correct! Question 4 of 32 / 3.0 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. Aldosterone; angiotensin C. Cortisol; hydrocortisone • D. Insulin; glucagon • E. Testosterone; estrogen Feedback:Good work; your answer is correct! Question 5 of 32 / 3.0 Points In contrast to the nervous system, the endocrine system uses only one method of communication: signaling. • A. transmitter • B. “hard wired” D. chemical • E. direct Feedback:In contrast, the endocrine system uses just one method of communication: chemical signaling. These signals are sent by the endocrine organs, which secrete chemicals—the hormone —into the extracellular fluid. Question 6 of 32 / 3.0 Points Which of the following statements about the thyroid gland is true? • A. It is located anterior to the trachea and inferior to the larynx. • B. The parathyroid glands are embedded within it. • 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 7 of 32 / 3.0 Points The development of a goiter indicates that . • A. the anterior pituitary is abnormally enlarged • B. there is hypertrophy of the thyroid’s follicle cells • C. there is an excessive accumulation of colloid in the thyroid follicles • E. Both B and C are correct. Feedback:Good work; your answer is correct! Question 8 of 32 / 3.0 Points The alpha cells of the pancreatic islets produce and secrete . • A. insulin • B. glucagon • C. epinephrine • D. alphagen • Feedback:Good work; your answer is correct! Part 2 of 6 - 18.0/ 21.0 Points Question 9 of 32 / 3.0 Points If the average length of a woman’s ovarian cycle is 30 days, the average length of her uterine cycles is most likely days. • A. 21 • B. 15 • C. 7 • D. 30 • E. 10 Feedback:Good work; your answer is correct! Question 10 of 32 / 3.0 Points The tunica albuginea is a . A. dense connective tissue covering of an ovary or testis • B. tube that conducts the ovum to the uterus • C. set of ducts inside the prostate gland • D. membrane which covers the entrance to the vagina • E. serous membrane which suspends the ovaries, uterine tubes, and uterus Feedback:Good work; your answer is correct! Question 11 of 32 0.0/ 3.0 Points The male reproductive gland which produces a fructose-rich solution which nourishes sperm and constitutes about 60% of the volume of semen is: • B. bulbourethral • C. prostate • D. seminal vesicles • E. corpus spongiosum Feedback:At the base of the urinary bladder, the 2 seminal vesicles secrete nutrient rich fluid into the ejaculatory ducts at the same point where the vas deferens delivers sperm. Question 12 of 32 / 3.0 Points During the second half of the ovarian cycle, progesterone is secreted by the . • A. mons pubis • C. primary follicle • D. anterior pituitary gland • E. posterior pituitary gland Feedback:Good work; your answer is correct! Question 13 of 32 / 3.0 Points Which layer of the uterus is shed during menstruation? • A. functional zone of endometrium • B. perimetrium • D. serous membrane • E. basilar zone of endometrium Feedback:Good work; your answer is correct! Question 14 of 32 / 3.0 Points All of the following statements concerning oogenesis are correct EXCEPT: • A. Oogenesis occurs from puberty until death. • B. Upon fertilization, a secondary oocyte completes meiosis II • C. Ova develop from stem cells called oogonia. • E. One oogonium produces one and only one ovum Feedback:Good work; your answer is correct! Question 15 of 32 / 3.0 Points In the testes, sperm cells replicate and differentiate in the . • A. tunica albuginea • B. septum • C. urethra • D. seminiferous tubules • Feedback:Good work; your answer is correct! Part 3 of 6 - 18.0/ 21.0 Points Question 16 of 32 / 3.0 Points Which hormone is responsible for mammary gland development at puberty? • A. luteinizing hormone • B. prolactin • C. oxytocin • D. estrogen • E. follicle stimulating hormone Feedback:Good work; your answer is correct! Question 17 of 32 / 3.0 Points The usual site of embryo implantation and growth is the . A. myometrium • B. uterine tube • C. perimetrium • D. endometrium • E. peritoneal cavity Feedback:Good work; your answer is correct! Question 18 of 32 3.0/ 3.0 Points Which part of a mature sperm contains enzymes which digest the coverings surrounding the ovulated oocyte? • B. middle piece • C. nucleus • D. flagellum • E. nucleus Feedback:Good work; your answer is correct! Question 19 of 32 3.0/ 3.0 Points All of the following events occur during the embryonic period of growth EXCEPT development of . • C. genitalia by which sex can be determined • D. blood cells in the liver • E. a heart capable of pumping blood Feedback:Good work; your answer is correct! Question 20 of 32 / 3.0 Points In the months preceding birth, the hormone which causes pelvic ligaments to become more flexible to enable widening of the pelvis during delivery is . • A. human chorionic gonadotropin • D. prolactin • E. relaxin Feedback:Good work; your answer is correct! Question 21 of 32 / 3.0 Points The inner cell mass of the trophoblast developments into the primary germ layers which are named the , , and . • A. epithelium, muscle, nervous, connective • B. zygote, morula, blastocyst • E. endoderm, ectoderm, mesoderm Feedback:Good work; your answer is correct! Question 22 of 32 / 3.0 Points How is a zygote transported to the uterus? • A. the zygote migrates by ameboid movement • B. the zygote has a flagellum • C. the uterine tube is lined with cilia and undergoes peristalsis • D. gravity • Feedback:After fertilization in the uterine tube, the zygote is transported to the lumen of the uterus by wavelike contractions of smooth muscle tissue in the walls of the uterine tubes called peristalsis as well as the waving motions of fingerlike cilia which project from the surface of epithelial cells lining the tubes. Part 4 of 6 - 21.0/ 21.0 Points Question 23 of 32 / 3.0 Points What effect did increasing the extracellular potassium have on the resting membrane potential? • A. The resting membrane potential became less negative. • B. The resting membrane potential did not change. • C. The resting membrane potential became more negative. • D. The resting membrane potential disappeared. Feedback:Correct! Question 24 of 32 3.0/ 3.0 Points The channels that provide for the movement of potassium in the resting neuron are . • B. voltage gated • C. chemically gated • D. leakage and chemically gated Feedback:Correct! Question 25 of 32 / 3.0 Points The minimum voltage that is required to generate an action potential is called the . • A. propagation voltage • B. depolarization voltage • D. trigger voltage Feedback:Correct! Question 26 of 32 / 3.0 Points What is the major cation found inside the the typical nerve cell at rest? • A. acetylcholine • B. sodium • C. chloride • D. potassium Feedback:Correct! Question 27 of 32 / 3.0 Points Why does the threshold increase when the interval between the stimuli decreases? • A. Sodium is flowing out of the cell. • B. Potassium is flowing into the cell. • C. Some sodium channels have been inactivated and cannot be reopened immediately. • D. Calcium is flowing out the cell. Feedback:Correct! Question 28 of 32 / 3.0 Points An axon that is more negative than the resting membrane potential is said to be . • A. graded • B. hyperpolarized • C. at threshold • D. depolarized Feedback:Correct! Question 29 of 32 / 3.0 Points What effect did decreasing the extracellular sodium have on the resting membrane potential? • A. The resting membrane potential became less negative. • B. Only a small change occurred, because the sodium channels were mostly open. • C. The resting membrane potential disappeared. • D. Only a small change occurred, because the resting neuron is not very permeable to sodium. Feedback:Correct! Part 5 of 6 - 8.0/ 8.0 Points Answer the following question in your own words without using any resources. Your answer should be written in complete sentences using correct grammar, spelling, and terminology. Question 30 of 32 4.0/ 4.0 Points Briefly explain how the sodium-potassium pump helps to maintain the resting membrane potential. they move two potassium ions inside the cell as three sodium ions are pumped out to maintain the negatively charged membrane in the cell, therefore, maintaining resting potential Feedback:Learning Objective: Describe the cellular transport mechanisms responsible for establishing the resting membrane potential. Please review Lab Exercise 3, Activity 1. Question 31 of 32 4.0/ 4.0 Points Define the term "threshold." the voltage that must be reached to generate action potential Feedback:Learning Objective: Define threshold and action potential. Please review Lab Exercise 3, Activity 3.