A fracture in which the bone is broken into three or more pieces is called a ________ fracture
A) greenstick
B) linear
C) comminuted
D) pott
E) compound
C
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In addition to producing cerebrospinal fluid, ependymal cells may
a. contribute to the formation of the blood-brain barrier b. act as immune cells c. function as neural stem cells d. conduct neural impulses e. produce myelin
The amino acid-derivative hormone epinephrine is responsible for __________.
a. glycogen breakdown b. release of lipids by adipose tissues c. increased cardiac activity d. all of the listed responses are correct
Describe the location of the lungs within the thoracic cavity
A) The lungs are anterior to the sternum in the mediastinum. B) The left and right lungs are surrounded by a pericardial cavity. C) The left lung is surrounded by a left pleural cavity and the right lung is surrounded by a right pericardial cavity. D) The left lung is surrounded by a left pericardial cavity and the right lung is surrounded by a right pleural cavity. E) The left lung and right lung are surrounded by the left and right pleural cavities, respectively.
Which of the following best explains how the phenomenon of "tolerance" develops with use of psychoactive drugs over time?
A. Psychoactive drugs can alter blood flow to the brain. B. Psychoactive drugs often produce euphoria. C. Psychoactive drugs can cross the blood-brain barrier. D. Psychoactive drugs can inhibit production of endogenous neurotransmitters. E. Psychoactive drugs can up-regulate receptors for endogenous neurotransmitters.