PHYL 2041 Lecture Notes - Lecture 12: Gap Junction, Syncytium, Citric Acid Cycle
21 Oct 2018
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Phyl 2041 lecture 12 october 18, 2018. There are quite a lot of cells in the picture because there are a lot of nucleus. Ca(cid:396)dia(cid:272) (cid:373)us(cid:272)le (cid:396)e(cid:395)ui(cid:396)es a lot of e(cid:374)e(cid:396)gy to wo(cid:396)k. k(cid:396)e(cid:271)"s (cid:272)y(cid:272)le a(cid:374)d ae(cid:396)o(cid:271)i(cid:272) (cid:396)espi(cid:396)atio(cid:374) o(cid:272)(cid:272)u(cid:396)s i(cid:374) the cardiac tissue. Abundance of connective tissue prevents the cardiac muscle from stretching too much. Connections with the intracardiac muscle cells add strength and permit direct transmission. The intercalated discs contain the desmosomes that hold the cells tightly together. The gap junctions are like ion channels between two cell, allow ions of one cell to go into the other. Because of these connection, the heart can function as an syncytium. Less dense sr and less extensive (but larger diameter) The orange and grey structure in the bottom are the intercalated discs. The t-tubules have the same function as the skeletal muscles and carry electrical signals into the fibers.
