Which of the following is not a feature that almost all connective tissues have in common?
A. Most cells are not in direct contact with each other.
B. Most connective tissues are highly vascular.
C. Cells usually occupy less space than the extracellular material.
D. Protein fibers are usually present in the ground substance.
E. Ground substance is so scarce that it is not visible with a light microscope.
Answer: E
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A patient goes to her doctor, complaining of fatigue, weight gain, and intolerance to cold. She also has a noticeable goiter in her neck. Which of the following is a most likely diagnosis and cause?
A. She has hyperthyroidism, possibly due to a hypersecreting tumor of the anterior pituitary gland. B. She has hypothyroidism, possibly due to low iodine in her diet. C. She has hypothyroidism, possibly due to destruction of thyrotrope cells of her anterior pituitary gland. D. She has hyperthyroidism, possibly due to Graves' disease.
Second- and third-order sensory neurons synapse in the thalamus
Indicate whether the statement is true or false
The liver functions to
A. secrete digestive enzymes that break down proteins. B. absorb nutrients. C. store glucose as glycogen. D. All apply.
During the early part of the menstrual cycle, ________ acts on granulosa cells, which ________. ________ acts on theca cells, which ________
A. LH; convert androgens to estrogens; FSH; synthesize androgens B. LH; synthesize androgens; FSH; convert androgens to estrogens C. FSH; convert androgens to estrogens; LH; synthesize androgens D. FSH; synthesize androgens; LH; convert androgens to estrogens E. progesterone; synthesize androgens; LH; secrete estrogens