Check all that are characteristics of cardiac muscle. Cells are long and cylindrical. Cells are short and branching. Cells have multiple nuclei at the periphery of the Cells have one or two nuclei in the center of the. They are composed of thick and thin filaments. This functional contractile unit is the sarcomere. Solution Cardiac muscle fibres are essentially long and cylindrical cells. Cardiac myocytes are narrower and much shorter than skeletal muscle cells which are normally spindle-shaped. The cells that constitute cardiac muscle, called cardiomyocytes or myocardiocytes, mostly contain contain one nucleus but many mitochondria sometimes two to four nuclei also exist. Cardiac muscle has cross striations formed by rotating segments of thick and thin protein filaments. The SARCOMERE is the contractile unit of the myocardial cell. It contains myosin and actin filaments as well as troponin and tropomysin. Shortening of sarcomeres causes contraction by the sliding filament..

1. Check all that are characteristics of cardiac muscle. Cells are long and cylindrical. Cells are
short and branching. Cells have multiple nuclei at the periphery of the Cells have one or two
nuclei in the center of the. They are composed of thick and thin filaments. This functional
contractile unit is the sarcomere.
Solution
Cardiac muscle fibres are essentially long and cylindrical cells.
Cardiac myocytes are narrower and much shorter than skeletal muscle cells which are normally
spindle-shaped.
The cells that constitute cardiac muscle, called cardiomyocytes or myocardiocytes, mostly
contain contain one nucleus but many mitochondria sometimes two to four nuclei also exist.
Cardiac muscle has cross striations formed by rotating segments of thick and thin protein
filaments.
The SARCOMERE is the contractile unit of the myocardial cell.
It contains myosin and actin filaments as well as troponin and tropomysin. Shortening of
sarcomeres causes contraction by the sliding filament.