Cardiac Muscle | Glendale Community College - Edubirdie

University:
Glendale Community College
Course:
BIO160 | Introduction to Human Anatomy and Physiology
Academic year:

2019
Views:

162

Pages:

2
Author:

xx1tiffxx2c

Cardiac Muscle • Cardiac muscle cells are short, branched, cells that usually have only one nucleus. • Cardiac muscle cells are linked to each other by intercalated discs. – gap junctions synchronize muscle contractions – desmosomes keep the cells from pulling apart • Cardiac muscle cells are Autorhythmic – initiate their own contraction cycles triggered by pacemaker cells • Cardiac muscle cells use aerobic respiration almost exclusively – – – – very vulnerable to interruptions in oxygen supply use fatty acids for primary energy storage large, abundant mitochondria resist fatigue damaged cells are repaired by fibrosis, not mitosis Cardiac Muscle

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