Archie has a resting heart rate of 125 beats per minute. Classify his cardiac dysrhythmia
A) heart block B) bradycardia C) asystole D) tachycardia
Answer: D
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The oral contraceptive pill, informally called "the pill" contains an estrogen and progesterone or a synthetic mimic of this hormone. The combination of these two hormones taken in the pill and circulating in the blood work because
A) The hormones cause the woman's body to mimic the activities of a pregnancy and disrupt the ovarian cycle, preventing ovulation. B) The hormones create an acid condition in the vagina that acts as a spermicide. C) The hormones prevent the proliferative or secretory phase of the menstrual cycle and the embryo will have no place to implant. D) The hormones cause a thickening of the mucus plug at the cervix that prevents sperm from penetrating the womb and reaching the ovulated egg.
Which organ removes most of the worn-out red blood cells from the circulation?
a. bone marrow b. kidney c. large intestine d. pancreas e. spleen
Match the term with the appropriate description. Answer with the letter preceding the description.A. The floor of the nasal cavityB. Superior portion of pharynxC. A soft process that extends inferiorly from the posterior edge of the soft palateD. The opening of the nasal cavity into the pharynxE. External openings of the nasal cavityExternal nares
Fill in the blank(s) with the appropriate word(s).
Mature molecules of tropocollagen are found in the:
a. Cisternae of the rough endoplasmic reticulum of a fibroblast b. Extracellular environment of a fibroblast c. Golgi apparatus of a plasma cell d. Secretory vesicles of a fibroblast e. Smooth endoplasmic reticulum of a macrophage