What is a disc-shaped structure with especially adhesive glycoproteins around each cell that bind cells to one another?
A. Adhesion belt
B. Tight junction
C. Gap junction
D. Hemidesmosomes
E. Desmosomes
Answer: E
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Redistribution of blood flow during exercise results from __________.
A) vasodilation in skeletal muscle and vasoconstriction in viscera. B) vasoconstriction only. C) vasodilation only. D) vasoconstriction in skeletal muscle and vasodilation in viscera.
Old red blood cells are removed from the blood by macrophages in what organ?
A) kidney B) spleen C) thymus D) bone marrow E) pancreas
An 8-year-old child in cardiac arrest has been intubated. When ventilating the child, the paramedic should:
A) observe for full chest expansion. B) deliver 8 to 10 breaths per minute. C) allow partial exhalation between breaths. D) deliver one breath every 15 seconds.
What is an oxygen deficit?
A. a protein found along the groove of the F-actin double helix B. a T tubule and two adjacent terminal cisternae C. the combination of myosin heads with active sites on actin molecules D. the movement of myosin head while attached to actin myofilament E. after exercise, the oxygen taken in that exceeds the oxygen required for resting metabolism