What hormone stimulates uterine contractions during labor and milk-ejection during lactation?
A. ADH
B. Oxytocin
C. Luteinizing hormone
D. Prolactin
Answer: B
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Parasympathetic preganglionic fibers arise from the ____________________ and ____________________ areas of the spinal column
Fill in the blank(s) with correct word
The ________ muscle is the most active muscle of the pectoral girdle because it can move the scapula in nearly any direction.
A) levator scapulae B) deltoid C) rhomboid major D) trapezius E) latissimus dorsi
Coronary veins empty into the
A) left atrium. B) left ventricle. C) right atrium. D) right ventricle. E) conus arteriosus.
Food is normally prevented from entering the nasopharynx by the
A. elevation of the epiglottis. B. elevation of the soft palate. C. depression of the hard palate. D. closure of the nasal conchae. E. constriction of the esophagus.