Please help me answer this multiple choice questions: (please answer all questions)
No explantion needed just the answer needed.
physiology and neurobiology questions below.
31. Systemic arterioles dilate in response to _____.
A. Increased CO2 levels in the tissue
B. Decreased O2 levels in the tissue
C. Decreased pH in the tissues
D. All of the above
32. Blood in the pulmonary arteries ______
A. Contains hemoglobin which is about 98.5% saturated with oxygen
B. Has a PO2 of about 40 mmHg
C. Both of the above
D. Neither of the above
33. Completion of first meiotic division of oogenesis yields.
A. One secondary oocyte
B. Four primary oocyte
C. Four mature ova (egg cells)
D. Four secondary oocytes
34. The final absorbable products of chemical digestion occurring in the brush border of the small
intestine include:
A. Monosaccharides and amino acids
B. Proteins and chylomicrons
C. Disaccharides and amino acids
D. Monosaccharides and disaccharides
35. The hemoglobin oxygen curve saturation curve plots ____ on the dependent (Y) axis and ____
on the independent (X) axis.
A. Oxygen concentration; hemoglobin concentration
B. % oxygen saturation of hemoglobin; PO2 of blood
C. % oxygen saturation of hemoglobin; PCO2 of blood
D. Hemoglobin concentration; oxygen concentration
36. In contrast to the female hypothalamic pituitary-sex steroid axis, control of the male axis is
aimed at ____.
A. Allowing spermatogenesis to occur just once a month
B. Keeping levels of pituitary gonadotropins relatively constant in blood
C. Keeping levels of hypothalamic releasing hormones higher than usual in blood
D. Causing a positive feedback effect of sex steroid up on gonadotropins
37. Which of the following will correct acidosis?
A. Speed up the proton pump
B. Buffering of protons with phosphate in the tubular lumen
C. Renal metabolism of glutamine
D. All of the above
38. Epithelium with a brush border (microvilli) is characteristics of the mucosa found in
A. Duodenum
B. Proximal Tubule
C. Both of the above
D. Neither of the above
39. The transport maximum (Tm) for glucose, addition filtered glucose
A. Is no longer filtered
B. Appears in urine
C. Is secreted
D. Is reabsorbed
40. Stroke volume is equal to ____.
A. End-diastolic volume alone
B. End-diastolic volume plus end-systolic volume
C. Cardiac output minus heart rate
D. End-diastolic volume minus end-systolic volume
41. The long term solution to a change in blood pH involves
A. Digestive System
B. Respiratory System
C. Buffers such as hemoglobin
D. Renal System
42. The left heart receives blood from ___ and pumps blood out through the ____.
A. Superior vena cava; pulmonary trunk
B. Pulmonary veins, pulmonary trunk
C. Pulmonary veins; aorta
D. Pulmonary arteries; aorta
43. Selection and activation of specific B lymphocytes may lead to all EXCEPT_____.
A. Formation of memory cells
B. Secretions of antibodies
C. Activation of complements to destroy tagged antigen
D. Secretion of perforin
44. Bile is stored and released into the duodenum from the
A. Liver
B. Pancreas
C. Gall Bladder
D. Duodenum
45. Beta oxidation of fatty acids yields _____,which then can be further oxidized to produces ATP.
A. Glycogen
B. Amino acids
C. Keto acids
D. Acetyl CoA
46. The relationship between the loop of Henle and the vasa recta capillaries function.
A. Absorption of glucose, amino acids and creatinine
B. Countercurrent exchange
C. Countercurrent multiplication
D. All of the above
47. Anterior pituitary production of Follicle Stimulating Hormone (FSH) is decreased by
A. Testosterone from Sertoli cells
B. Inhibin from Sertoli cells
C. Inhibin from interstitial (Leydig) cells
D. Luteinizing Hormone (LH) from granulosa cells
48. A response to acidosis would involve
A. Slowing down the proton pump
B. Greatly increased excretion of HCO3- (bicarbonate ions)
C. Both of the above
D. Neither of the above
49. The conversion of spermatid to spermatozoa occurs
A. By differentiation process in the seminiferous tubule
B. In epididymis
C. By meiosis, in the seminiferous tubule
D. In the prostate gland
50. Antibody-mediated immunity defends against ____.
A. Virus infected cells
B. Viruses and bacteria in the blood or body fluids
C. Bacteria only
D. Viruses only
