This is a diagram of calcium homeostasis. What process is represented by "B"?
A. Calcium is lost in urine.
B. Calcium is removed from blood by osteoblasts.
C. PTH promotes calcium reabsorption from urine.
D. Vitamin D promotes calcium absorption.
E. PTH promotes calcium release into blood by osteoclast.
C
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Bile salts bind at their hydrophobic regions to large fat globules within the chyme that enters the duodenum. Bile salts break up the fat globule into smaller fat droplets. This role of bile salts is best described as ________
A) lipid emulsification B) lipid absorption C) lipid ingestion D) lipid digestion
Which of the following changes will result in increased blood flow at an injury site during inflammation?
A) increased blood volume B) increased vessel diameter C) increased blood pressure D) decreased peripheral resistance E) relaxation of precapillary sphincters
Oral contraceptives may cause
A. breast tenderness. B. pregnancy, as they have a high (21 in 100 women) rate of failure. C. loss of bone density. D. intrauterine damage.
Which of the following is involved in the gustatory perception of an amino acid?
-filiform papillae -basal cells -umami receptors -receptors in the throat