The myocardium (cardiac muscle tissue) undergoes a significant amount of physical stress due to its contractions. You would expect to see relatively large numbers of which of the following embedded within their plasma membrane?
A) tight junctions
B) desmosomes
C) glycolipids
D) transport proteins
B
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Willy is allergic to ragweed pollen. He has read about a medication that blocks certain antibodies. Explain how this treatment can alleviate his allergy.
What will be an ideal response?
Match the function or term with the appropriate organic molecule.A. CarbohydratesB. LipidsC. ProteinsD. Nucleic acidsPrimary energy source
Fill in the blank(s) with the appropriate word(s).
Which type of bone tissue has concentric lamellae?
A. Spongy bone B. Compact bone C. Both "spongy bone" and "compact bone" are correct.
Which best describes a role of L-type Ca2+ channels in cardiac muscle cells?
A. They function exactly the same in cardiac muscle cells as they do in skeletal muscle. B. They are directly responsible for making cardiac muscle fatigue-resistant. C. They are responsible for preventing tetanic contractions. D. They cause the absolute refractory period to be very brief. E. They act as non-conducting voltage sensors that mediate excitation-contraction coupling.