In the duodenum, submucosal glands secrete which of the following?
A) brush border enzymes
B) an alkaline mucus
C) pepsin
D) secretin
E) cholecystokinin
B) an alkaline mucus
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Signs and symptoms of right-sided heart failure include all of the following EXCEPT ________.
A. extended neck veins B. pulmonary edema C. edema or swelling of the hands and feet D. an engorged spleen
There are different types of pumping structures in animal circulatory systems. Describe the three different types. How is one-way flow ensured?
What will be an ideal response?
Which of the following statements about rods and cones in the retina is TRUE?
A. Cones enable us to see in dim light; rods provide color vision. B. Rods and cones all have the same kind of opsin. C. Cones are found in highest density in the fovea; rods are more prevalent near the edges of the retina. D. Rods require brighter light to activate them than do cones. E. Rods provide higher visual acuity than do cones.
The surge in luteinizing hormone that occurs during the middle of the ovarian cycle triggers
A) follicle maturation. B) menstruation. C) ovulation. D) menopause. E) atresia.