What is the proximal long bone of the arm?
A. Radius
B. Clavicle
C. Humerus
D. Ulna
Answer: C
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The antibody that becomes bound to mast cells and basophils and causes the cells to release histamine and other chemicals is ________.
Fill in the blank(s) with the appropriate word(s).
After birth, the ductus arteriosus constricts and becomes the ligamentum arteriosum
Indicate whether the statement is true or false
What are the three important functions of the lipid bilayer of the plasma membrane?
a. forms the basic membrane structure; hydrophilic interior acts as barrier; aids in RNA transfer b. forms the basic membrane structure; hydrophobic interior acts as barrier; responsible for fluidity c. forms the basic membrane structure; hydrophobic interior acts as barrier; aids in RNA transfer d. allows electrical flow via nerves; hydrophobic interior acts as barrier; responsible for fluidity e. allows electrical flow via nerves; hydrophilic interior acts as barrier; responsible for fluidity
A six-month-old baby is admitted to the hospital with a broken bone. This is the third fracture in the otherwise healthy child. The parents are arrested on charges of child abuse. The defense lawyer gets the charges dropped after the results of genetic tests indicate which of the following conditions?
A. Anemia B. Osteogenesis imperfecta C. Osteoporosis D. Polydactyly