What is a possible side effect of weakening of the cardiac sphincter?
A. Acid reflux into the esophagus
B. Uncontrollable bowel movements
C. Heart attack
D. Rapid overfilling of the stomach
Ans: A. Acid reflux into the esophagus
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Wharton's jelly is a form of
A) Marfan's syndrome. B) mucous connective tissue. C) ground substance. D) collagen fiber. E) embryonic epithelium.
Suzie wants to protect virgin forests from destruction. She climbs a tree to prevent loggers from cutting the oldest tree in the forest. Suzie did not eat for twelve hours until a friend, Jammie, took over the vigilance. Match the correct levels of blood glucose concentration, blood insulin concentration and relative membrane insulin receptor concentration for a skeletal muscle cell 20 hours into
Jammie's fast and one hour after Suzie had eaten a peanut butter and banana sandwich and a bowl of sweet potato soup.
Plasma Glucose: 90 mg/dl; 125 mg/dl
Plasma Insulin: 10iuU/ml (70 pmol/L); 40iuU/ml (280 pmol/L)
Relative membrane insulin receptor concentration: increasing (high); decreasing (low)
Which bone marking provides a site where bones articulate or to which ligaments and tendons attach?
A) foramen B) depression C) projection D) opening
What structure returns blood from the lungs to the heart?
A. Pulmonary trunk B. Pulmonary arteries C. Pulmonary valve D. Pulmonary veins