Which of these statements describes a function of fontanels?
a. Fontanels protect the brain as the young child begins to walk.
b. Fontanels connect regions of the developing brain.
c. Fontanels allow the fetal skull to be compressed slightly during childbirth.
d. Fontanels compress the brain so that it will not grow too fast during infancy.
Answer: c. Fontanels allow the fetal skull to be compressed slightly during childbirth.
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An intervertebral disk generally will rupture in a posterolateral direction.
Answer the following statement true (T) or false (F)
The condition in which the liver becomes infected with fibrous tissue and is unable to repair itself is known as:
(a) hepatitis (b) cirrhosis (c) jaundice (d) hepatoma
Many effects of growth hormone are mediated by insulin-like growth factors (IGFs) secreted by the pancreas.
Answer the following statement true (T) or false (F)
Which of the following is true regarding joints that are first-class levers?
A) Their resistance is between the joint (fulcrum) and the distal end of the bone (effort). B) The joint (fulcrum) is at the opposite end from the tendinous insertion (effort). C) Their mechanical advantage is always less than 1.0. D) Their output force is always greater than the input force. E) Their mechanical advantage may be either greater or less than 1.0.