A weight-lifter strains to lift a heavy weight and there is no movement of the person's arms holding on to the weight. This type of contraction is called a/an ____ contraction.
A) treppe
B) isometric
C) concentric
D) tetanus
E) isotonic
B) isometric
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The plateau portion of the O2-Hb curve
a. is in the blood-PO2 range that exists at the pulmonary capillaries. b. means that hemoglobin becomes almost nearly saturated in the lungs unless the pulmonary capillary PO2 falls below 60 mm Hg. c. is in the blood-PO2 range that exists at the systemic capillaries. d. both (a) and (b) above. e. both (b) and (c) above.
With respect to heart rate, which of the following had the same effect?
A) digitalis and atropine B) atropine and epinephrine C) digitalis and pilocarpine D) digitalis and pilocarpine as well as atropine and epinephrine
The patient had carbon monoxide in her home so she called in sick at work and stayed in bed breathing more CO for days on end. (Hint: She also complained that her house had become haunted by ghosts).
A) Anemic hypoxia B) Ischemic (stagnant) hypoxia C) Hypoxemic hypoxia D) Histotoxic hypoxia
The majority of T cells of the naive lymphocyte pool wait for the encounter with foreign antigens in the ________.
A. plasma B. thymus C. blood plasma D. lymphatic tissues E. lymph