Which of the following vascular layers contains the thick wrapping of smooth muscle that gives arteries their rounded appearance?
a. tunica media
b. tunica adventitia
c. tunica interna
d. tunica externa
Ans: a. tunica media
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This figure shows a lymph node and its components. What structure is indicated by number 4?
A. Lymphatic nodule B. Medullary cord C. Trabecula D. Lymphatic sinusoid E. Hilum
Monica doesn't eat anything that was once in an animal. She is an ovo-vegetarian.
Answer the following statement true (T) or false (F)
Blood vessels traveling within ________ deliver oxygen and nutrients to the spinal cord
A) the pia mater B) the arachnoid mater C) the dura mater D) all three cranial meninges E) all three spinal meninges
During your primary assessment of a semiconscious 30-year-old female with closed head trauma, you note that she has slow, shallow breathing and a slow, bounding pulse. As your partner maintains manual in-line stabilization of her head, you should:
A. perform a focused secondary assessment of the patient's head and neck. B. instruct him to assist her ventilations while you perform a rapid assessment. C. apply 100% oxygen via a nonrebreathing mask and obtain baseline vital signs. D. immediately place her on a long backboard and prepare for rapid transport.