The epidermis in a section of thin skin includes the following four layers. In what order do these occur, from the basal lamina to the surface?
(1) stratum granulosum
(2) stratum corneum
(3) stratum basale
(4) stratum spinosum
A) 3, 4, 1, 2
B) 1, 2, 3, 4
C) 1, 3, 4, 2
D) 4, 3, 2, 1
E) 3, 2, 4, 1
A) 3, 4, 1, 2
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The structures within a sarcomere composed of titin are ________ filaments.
Fill in the blank(s) with the appropriate word(s).
When central chemoreceptors detect a drop in the pH of the cerebrospinal fluid,
A. medullary respiratory centers trigger an increase in rate and depth of breathing. B. medullary respiratory centers trigger a decrease in rate and depth of breathing. C. pontine respiratory centers trigger a decrease in rate and depth of breathing. D. the vagus and phrenic nerves stimulate decreased production of the catalyst carbonic anhydrase.
What gas is bound by the heme pigment?
A) oxygen B) carbon dioxide C) nitrogen D) helium
Which of these is a unique part of the spleen?
A) hilus B) trabeculae C) white pulp D) cortex E) medulla