Functional unit of skeletal muscle is the:
AATP
BCell
CMyosin
DSarcomere (segment between two Z-discs)
Answer & Solution
Correct answer: D. Sarcomere (segment between two Z-discs)
Sarcomere: contractile unit. Spans Z-line to Z-line. Contains thin filaments (actin) anchored to Z, thick filaments (myosin) in center (M-line). Bands: A (thick filament length, dark), I (thin only, light), H (thick only, in middle). Shortens during contraction.
Related questions
Tendons connect:SLOW-TWITCH (Type I, red) muscle fibres are characterised by:Cardiac muscle is unique because it is:The KNEE joint is an example of which type of synovial joint?The pectoral girdle in humans consists of:An adult human skeleton has approximately how many bones?RIGOR MORTIS (stiffness after death) occurs because:During muscle contraction, the immediate trigger for actin-myosin binding is the release o