A patient dies of a myocardial infarction because of death to the left atrium and posterior wall of the left ventricle. A blockage in which coronary vessel resulted in her death?
A. Anterior interventricular branch of the LCA
B. Right marginal branch of the RCA
C. Circumflex branch of the LCA
D. Posterior interventricular branch of the RCA
Answer: C
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Match the following:
A) Treppe B) Maximal stimulus C) Multiple motor unit summation D) Tetanus E) Wave summation 1) The stimulus above which no stronger contraction can be elicited, because all motor units are firing in the muscle. 2) The phenomenon in which the contraction strength of a muscle increases, due to increased Ca2+ availability and enzyme efficiency during the warm-up. 3) Continued sustained smooth contraction due to rapid stimulation. 4) The situation in which contractions become stronger due to stimulation before complete relaxation occurs. 5) How a smooth increase in muscle force is produced.
A substance that is useful for determining the plasma clearance rate of the kidney is ________.
A. protein B. ammonia C. glucose D. ADH E. inulin
What does the term "menstrual cycle" specifically refer to?
A) The cyclic events happening from puberty to menopause B) The cyclic changes in the ovaries determined by shifting hormonal changes C) The events that recur every month during pregnancy D) The sequence of events from fertilization to giving birth E) The cyclic changes in the uterus determined by shifting hormonal changes
________ is/are formed in an early stage in intramembranous ossification.
A. Chondrocyte proliferation B. Osteoid tissue C. Chondrocyte hypertrophy D. Blood cells E. A secondary ossification center