The design of a person's epidermal ridges is determined by the manner in which the papillae rest upon the dermal ridges to produce the specific pattern known as handprints, footprints, and fingerprints. Which of the following statements is true regarding these prints or ridges?
A) Every human being has the same pattern of ridges.
B) They are genetically determined, therefore unique to each person.
C) Because we are constantly shedding epithelial cells, these ridges are changing daily.
D) Identical twins do not have the same pattern of ridges.
B) They are genetically determined, therefore unique to each person.
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All material that moves through the lumen of the digestive tract comes from outside of the body
Indicate whether the statement is true or false
An adaptive defense mechanism is always activated by __________.
a. inflammation b. an antibody c. fever d. an antigen
Why are minerals, vitamins, and water classified as essential nutrients?
a. they are the major providers of calories for the body b. they are used by the body in large quantities c. the body cannot synthesize the nutrients in sufficient quantities d. all of the listed responses are correct
Which gland is located beneath the posterior end of the corpus callosum in the brain?
A. Pituitary B. Pancreas C. Pineal gland D. Hypothalamus