Which of the following statements regarding PTH (parathyroid hormone) is true?
A. PTH causes increased loss of Ca2+ from the kidneys.
B. PTH causes decreased vitamin D formation in the kidneys.
C. PTH causes increased Na+ reabsorption in the kidneys.
D. PTH causes increased reabsorption of Ca2+ in the kidneys.
E. PTH causes decreased uptake of Ca2+ from the small intestine.
Answer: D
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Introduction to the Structural Units: In each of the examples below, choose the term that correctly describes the human body according to anatomical position.
a. In the anatomical position, the palms are ___ or backward. b. The liver is superior or ___ to the diaphragm. c. The hand is proximal or ___ to the elbow. d. The shoulder blade is on the anterior or ___ part of the body. e. Cranial refers to the ___ or tail end of the body. f. The coronal plane divides the body into ___ or right and left sections. g. The arms are located on the medial or ___ side of the body. h. The transverse plane divides the body into ___ or anterior and posterior parts.
The addition of a buffer to liquid such as blood with a pH of 7.4 causes the pH to drop to 7.0 (chemically neutral)
Indicate whether this statement is true or false.
Which four elements comprise approximately 96% of our body weight?
A. carbon, oxygen, iron, and potassium B. carbon, oxygen, hydrogen, and nitrogen. C. carbon, oxygen, hydrogen, and potassium. D. carbon, oxygen, potassium, and sodium.
Which of these terms best describes a small hole going through a bone?
A) Fissure B) Protuberance C) Foramen D) Tubercle