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8 multiple-choice questions and 3 flashcards on Blood and the Lymphatic/Immune System, about 5% of the HS Anatomy & Physiology bank. Every one carries a written rationale.
Blood and the Lymphatic/Immune System is one of 13 chapters in CoStudy's HS Anatomy & Physiology bank, and it holds 8 of the bank's 150 multiple-choice questions — roughly 5% of the total. That proportion is not arbitrary: chapters follow the certifying body's published exam outline, and the number of questions in each is set by that domain's published weight, so the share of your practice time this chapter takes matches the share of the real exam it accounts for.
Studying by chapter is worth doing once you have a diagnostic score. A single overall percentage tells you whether you are close; it does not tell you which domain is dragging. Working a weak chapter in isolation, and re-testing it in isolation, is the fastest way to move a score that has stalled — and it is why the mock exams in CoStudy report by domain rather than as one number.
1 questions drawn from this chapter, with the full rationale shown — the controlling principle behind the right answer, and why each wrong option tempts and fails.
Adult human skeleton has approximately:
Answer: E — 206 bones (axial: 80 — skull, vertebrae, ribs; appendicular: 126 — limbs, girdles)
Adult human: 206 bones. Newborn has ~270-300 (some fuse). Two divisions: axial (skull, vertebral column, rib cage) and appendicular (limbs, shoulder girdle, pelvic girdle). Smallest: stapes (ear). Longest: femur. Functions: support, protection, movement, blood cell production, mineral storage.
2 cards from the 3 in this chapter.
Functional unit of kidney?
Nephron — ~1 million per kidney. Filters blood, reabsorbs nutrients, excretes wastes.
Kidneys' other roles?
Blood pressure (renin), red blood cell production (erythropoietin), vitamin D activation, pH balance.
These are a sample. The full Blood and the Lymphatic/Immune System chapter runs 11 items with per-chapter progress tracking, on the web and in the iOS app.
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