The buffer system in blood is formed by
A) the chloride shift through the cell membranes.
B) deoxyhemoglobin generated in white blood cells.
C) hemoglobin binding hydrogen ions in red blood cells.
D) phosphate buffer in the renal system.
C
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Which enzyme is produced by the salivary glands and begins the chemical digestion of carbohydrates?
A. Salivary amylase B. Salivary maltase C. Salivary sucrase D. Salivary lactase
The reddish brown skin that surrounds the nipple is called the
A) vestibule. B) fornix. C) zona pellucida. D) hymen. E) areola.
The extra fluid filtered but not reabsorbed at the capillary level is picked up by the lymphatics
Indicate whether the statement is true or false
At what point in the large intestine does the epidermis change from stratified squamous non-keratinized tissue like the oral cavity to stratified squamous keratinized tissue like the skin?
A) descending colon B) internal anal sphincter C) anus D) rectum E) sigmoid colon