Which of the following blood vessels have highest resistance to blood flow?
A. elastic arteries and muscular arteries
B. muscular arteries and large veins
C. arterioles and capillaries
D. large veins and venules
E. elastic arteries, muscular arteries and large veins
Ans: C. arterioles and capillaries
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The semimembranosus inserts _____ on the ____ tibial condyle.
Fill in the blank(s) with the appropriate word(s).
Wolff's law of bone explains the effect of __________.
A. different diets on bone elongation B. mechanical stress on bone remodeling C. temperature on bone growth D. age on bone thickening E. sex on bone widening
The airplane you are riding suddenly depressurizes at 10,000 feet in the air. This causes the PO2 of the airplane's air to drastically decrease. You pass out before you can put on your oxygen mask. After a few seconds, the PO2 in your alveoli rapidly drops to 60 mmHg instead of the normal 104 mmHg. How will this affect blood gas concentrations?
A. Blood PO2 will become low and much less oxygen will be delivered to tissues until cabin pressure returns. B. PO2 in the alveoli will be so low that oxygen will diffuse from hemoglobin into the alveoli, where it is exhaled. This causes blood oxygen concentrations to drop throughout the body. C. PO2 in the alveoli will be too low for gas exchange to even occur, so tissues will receive no oxygen during the depressurization event. D. Blood PCO2 will increase because the air contains less oxygen.
A patient who sustains a blow to the side of the head above the cheekbone cannot remember the words to a new song on the radio, no matter how many times he hears it. The head injury likely damaged his ________.
A. medial temporal B. inferior temporal C. inferior lateral D. prefrontal