Prostaglandins are considered paracrines.
Answer the following statement true (T) or false (F)
True
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Which of the following become connected by myosin cross-bridges during muscle contraction?
A) thin filaments and thick filaments B) thick filaments and titin filaments C) z disks and actin filaments D) thick filaments and t-tubules E) thin filaments and t-tubules
What species can develop a condition referred to as roaring?
What will be an ideal response?
The epidermis
a. has an outermost keratinized layer that is tough, airtight, and fairly waterproof b. contains melanocytes, keratinocytes, Langerhans cells, Granstein cells, and transient T lymphocytes c. has a richly vascularized inner layer d. has characteristics a and b e. has none of the above characteristics
Tears
A. are very acidic and kill microbes. B. contain lysozyme to trap dust. C. wash foreign objects away from the eye. D. contain little water. E. are produced only when a person cries.