What substance binds to collagen and activates platelets?
A) fibrin
B) thrombin
C) von Willebrand factor
D) arachidonic acid
E) thromboxane A2
Answer: C) von Willebrand factor
Anatomy & Physiology
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The central cavity of a tooth is filled with
A. dentin. B. enamel. C. pulp. D. cementum. E. calcium phosphate.
Anatomy & Physiology
Where is the serratus anterior?
a) A b) B c) C d) D e) G
Anatomy & Physiology
Enting of the skin under the jaw often occurs when airway devices are inadvertently inserted into the:
A) pyriform fossae. B) vallecular space. C) laryngopharynx. D) hypopharyngeal space.
Anatomy & Physiology
Impulses are conducted more rapidly along a neuron if ________ is present.
A. calcium B. sodium C. myelin D. spinal fluid
Anatomy & Physiology