Identify segment of small intestines.
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Identify the muscle for breathing.
Identify the muscle for breathing.
Identify the one sac.
Identify the one sac.
Identify cartilage.
Identify cartilage.
The layers make up the ________.
The layers make up the ________.
What gas would be diffusing is this direction (blue arrow)?
What gas would be diffusing is this direction (blue arrow)?
Identify the serous membrane.
Identify the serous membrane.
Identify layer of alimentary canal.
Identify layer of alimentary canal.
An ______is a muscle that opposes a particular movement.
An ______is a muscle that opposes a particular movement.
Correctly relate the story of contraction events in order in…
Correctly relate the story of contraction events in order in a muscle fiber by numbering each event below. 1. Troponin changes shape. 2. Calcium ions bind to troponin. 3. Myosin heads bind to active sites on actin molecules. 4. Tropomyosin moves and exposes the active sites on the actin molecules. 5. Cycling continues until calcium ions are taken back into the sarcoplasmic reticulum. 6. Myosin heads pull on thin myofilaments and slide them toward the center of the sarcomere.