How does cardiorespiratory endurance affect physical fitness?
a) it increases the efficiency with which the body delivers oxygen and nutrients to its cells
b) it improves the amount of force that muscle groups release in a single effort.
c) it joints move through a full range of motion efficiently and effectively.
d) it improves how well muscles perform repeated movements over extended periods of time

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

Why is important to cover your hands and feet in cold weather? a. they are furthest from your heart. b. they are often last to receive blood flow. c. they can suffer from tissue damage in cold weather. d. all of the above

Which of the following must be treated under the care of a physician and is mainly considered a medical condition? a. scoliosis b. lordosis c. kyphosis d. all of the above