Thin ________ cells line the surface of the alveoli and allow for efficient gas exchange.
What will be an ideal response?
squamous alveolar
type I alveolar
typeI alveolar
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During gastrulation,
A) the blastomeres fuse. B) the placenta penetrates the endometrium. C) three germ layers are formed. D) cells from the hypoblast move to the epiblast. E) the neural tube closes.
How much water needs to be added to a 5 g vial of drug powder to make a 2.5% solution?
a. 200 mL b. 50 mL c. 100 mL d. 150 mL
Which of the following statements is true?
A. Collagen fibers provide strength to dense connective tissue. B. Dense connective tissue has a fluid matrix. C. Mast cells are found in abundance in dense connective tissue. D. Elastic tissue is flexible, but not stretchy. E. Areolar tissue is tightly packed.
Negative feedback inhibition occurs when
a. thyroxine stimulates the anterior pituitary. b. TRH stimulates the thyroid gland. c. TSH stimulates the thyroid gland. d. TRH stimulates the anterior pituitary. e. TRH causes the anterior pituitary to release TSH.