Question

16) Macrophages, natural killer cells, and defensive proteins are internal defenses that are part of our innate defense system. A) True B) False 17) Chemical substances secreted by cells into the extracellular fluids that travel through the blood and regulate the metabolic function of other cells in the body are called A) enzymes B) antibodies C) proteins D) hormones 18) Which anterior pituitary hormone does NOT target another endocrine gland? A) adrenocorticotropic hormone (ACTH) B) growth hormone C) follicle-stimulating hormone D) luteinizing hormone 19) Active transport of substances from the blood into the nephron is called A) filtration. B) tubular reabsorption. C) tubular secretion. 20) Which of the following is associated with passive immunity? A) exposure to an antigen B) infusion of weakened viruses C) passage of lgG antibodies from a pregnant mother to her fetus D) booster shot of vaccine 21) Place the following in correct sequence from the formation of a drop of urine to its elimination from the body. 1. ureter 2. renal pelvis 3. collecting duct 4. urethra 5. urinary bladder 6. nephron A) 3, 1,2, 6,5,4 B) 5, 3, 2, 1,5,4 C) 2, 1,3, 6,5,4 D) 3, 6, 2, 1,5, 4

Answer 1

16- true

17-hormones

18-growth hormone

19-tubular reabsorption

20-pasaage of Ig from mother to child

21-b