part1. Sarcolemma - a delicate cell membrane of the muscle cell2. Nucleus - a rounded structure beneath the sarcoplasm3. Sarcoplasm - a cytoplasm enclosed by the sarcolemma4. Cross-striation - heavily shaded thin bands and light bands across the cellOBSERVATIONS:1. What is the shape of the skeletal muscle fibers?2. Draw and label the parts of the skeletal muscle fibers.

All cells possess the activity of contractility and motility that results from the interaction of…

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Biology

ERVATIONS: What is the shape of the skeletal muscle fibers? 2. Draw and label the parts of the skeletal muscle fibers.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter8: Muscle Physiology

Section: Chapter Questions

Problem 11RE

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Concept explainers

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.

Question

part
1. Sarcolemma - a delicate cell membrane of the muscle cell
2. Nucleus - a rounded structure beneath the sarcoplasm
3. Sarcoplasm - a cytoplasm enclosed by the sarcolemma
4. Cross-striation - heavily shaded thin bands and light bands across the cell
OBSERVATIONS:
1. What is the shape of the skeletal muscle fibers?
2. Draw and label the parts of the skeletal muscle fibers.

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