Skeletal muscles are able to contract ________ times faster than smooth muscle
A) 40 B) 50 C) 20 D) 60
B
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Tears act as a lubricant and ________ to protect the eyes from microorganisms.
A. antiseptic B. moisture C. bath D. glaze
Which tissue is subdivided according to the shape and the arrangement of cells?
a. epithelial tissue b. connective tissue c. muscle tissue d. nervous tissue
The primary visual cortex is situated in the ____________________ lobe of the brain
Fill in the blank(s) with correct word
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 being exposed to these pressure conditions for a time, PO2 of the blood after oxygenation is only 60 mmHg. How saturated will hemoglobin be in these conditions (if the temperature remains around 38 degrees C)?
A. About 60% saturated B. About 90% saturated C. About 85% saturated D. About 100% saturated