A-Band
Microscopic Anatomy of a Skeletal Muscle

Flashcard
•
Biology
•
11th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The dark band in skeletal muscle fibers that contains thick filaments (myosin) and some overlapping thin filaments (actin).
2.
FLASHCARD QUESTION
Front
What is the endoplasmic reticulum in a muscle cell called?
Back
Sarcoplasmic reticulum.
3.
FLASHCARD QUESTION
Front
What creates the alternating light and dark bands that provides the striation pattern on skeletal muscle tissue?
Back
A bands and I bands.
4.
FLASHCARD QUESTION
Front
The H zone, located within the A band, lacks thin filaments and is represented by ________.
Back
D.
5.
FLASHCARD QUESTION
Front
Z-Disc
Back
The boundary structure of a sarcomere that anchors thin filaments (actin) and connects adjacent sarcomeres.
6.
FLASHCARD QUESTION
Front
What are I bands?
Back
The light bands in skeletal muscle fibers that contain only thin filaments (actin).
7.
FLASHCARD QUESTION
Front
What is a sarcomere?
Back
The functional unit of a muscle fiber, defined as the segment between two Z-discs.
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