A patient experiencing pain, nausea, and lack of urination goes to the hospital and is given a blood test. The test reveals high amounts of nonprotein nitrogenous substances in the blood plasma, particularly urea. Which of the following organs is most likely malfunctioning?
A. Small intestine
B. Kidneys
C. Heart
D. Liver
Answer: B
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Which of the following channels opens or closes in response to changes in membrane potential?
a. voltage-gated b. chemical-gated c. mechanically-gated d. thermally-gated e. none of these answers.
Which of the following factors would MOST likely produce a falsely normal pulse oximetry reading?
A) Carboxyhemoglobin B) Peripheral vasodilation C) A dimly lit environment D) Heart rate above 120 beats/min
The uterus is a target organ of which hormone?
A. Follicle-stimulating hormone (FSH) B. Luteinizing hormone (LH) C. Adrenocorticotropic hormone (ACTH) D. Oxytocin E. Gonadotropin-releasing hormone
Answer the following statements true (T) or false (F)
1. Positive chemotaxis is a feedback system that signals leukocyte migration into damaged areas. 2. A condition of leukocytosis indicates over 11,000 white blood cells per cubic millimeter in the blood. 3. Basophils increase in number when parasitic invasion occurs. 4. Leukopenia is an abnormally low number of leukocytes. 5. A person with type B blood could receive blood from a person with either type B or type O blood.