If you exercise with enough intensity that the blood pH is changed, you have exceeded the _______
A.
aerobic threshold
B.
acidity point
C.
base point
D.
pH threshold
E.
anaerobic threshold
E
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Which of the following is an incorrect matching of immune system cells and their functions?
a) Macrophage - process and presentation of foreign antigens to T cells b) Dendritic cell - processes and presents antigen to T and B cells c) B cells - process and presents antigen to helper T cells d) Plasma cell - produces and secretes antibodies e) All of these are correct matching of the cells and their functions
Which birth control method provides some protection against sexually transmitted diseases?
A) birth control pills B) diaphragm with spermicide C) condoms D) intrauterine device E) surgical sterilization
The pathway of urine is ________.
A. nephrons ? collecting ducts ? minor calyces ? major calyces ? renal pelvis ? ureter B. nephrons ? collecting ducts ? renal pelvis ? major calyces ? minor calyces ? ureter C. nephrons ? renal pelvis ? collecting ducts ? major calyces ? minor calyces ? ureter D. nephrons ? collecting ducts ? major calyces ? minor calyces ? renal pelvis ? ureter
Place these structures in the order that blood returning to the heart from the body would pass through them.
1. right ventricle 2. left atrium 3. right atrium 4. pulmonary artery 5. left ventricle 6. pulmonary vein A) 4, 2, 5, 6, 3, 1 B) 1, 3, 6, 4, 5, 2 C) 2, 5, 6, 4, 3, 1 D) 3, 2, 4, 6, 1, 5 E) 3, 1, 4, 6, 2, 5