What is the only muscle in the quadriceps femoris muscle group that extends the knee and flexes the thigh?
A. Rectus femoris
B. Vastus medialis
C. Biceps femoris
D. Vastus intermedius
Answer: A. Rectus femoris
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Which of the following hormones stimulates pancreatic secretions?
a) histamine b) secretin c) motilin d) gastrin
Which structure lines the medullary cavity?
A) Endosteum B) Periosteum C) Spongy bone D) Epiphysis
How does epidemiology affect healthcare?
A. Epidemiology helps healthcare providers prevent the spread of disease B. Epidemiology helps healthcare providers diagnose disease C. Epidemiology helps healthcare providers treat disease D. All of these answers are correct
In 1848, a railroad foreman named Phineas Gage was injured in an explosion, when a tamping iron penetrated his skull and caused brain damage; surprisingly, he survived. The rod was 1.25" in diameter and 3.5' long. After the accident he was able to speak, get himself up and down from a cart, and climb a flight of stairs to see the local physicians. Years later, the doctors reported that he
physically recovered, but the balance between his intellectual facilities and animal propensities was destroyed. He was no longer mild-mannered, kind, and respectful; he grew obstinate, ill-tempered, and showed little self-restraint. Based on this story, what area(s) of the brain (and/or systems) do you think he injured and why? What will be an ideal response?